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Camera lens

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515:. Photographs can be taken of a person stretching out a hand with a wideangle, a normal lens, and a telephoto, which contain exactly the same image size by changing the distance from the subject. But the perspective will be different. With the wideangle, the hands will be exaggeratedly large relative to the head. As the focal length increases, the emphasis on the outstretched hand decreases. However, if pictures are taken from the same distance, and enlarged and cropped to contain the same view, the pictures will have identical perspective. A moderate long-focus (telephoto) lens is often recommended for portraiture because the perspective corresponding to the longer shooting distance is considered to look more flattering. 206: 816:. Commonly, the lens may zoom from moderate wide-angle, through normal, to moderate telephoto; or from normal to extreme telephoto. The zoom range is limited by manufacturing constraints; the ideal of a lens of large maximum aperture which will zoom from extreme wideangle to extreme telephoto is not attainable. Zoom lenses are widely used for small-format cameras of all types: still and cine cameras with fixed or interchangeable lenses. Bulk and price limit their use for larger film sizes. Motorized zoom lenses may also have the focus, iris, and other functions motorized. 218: 178: 413: 38: 194: 3169: 3180: 164:
take pictures of distant objects). This allows the pinhole to be opened up significantly (fourth image) because a thin convex lens bends light rays in proportion to their distance to the axis of the lens, with rays striking the center of the lens passing straight through. The geometry is almost the same as with a simple pinhole lens, but rather than being illuminated by single rays of light, each image point is illuminated by a focused
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be any lens modified (with adapters or spacers, which are also known as "extension tubes".) to bring the focal plane "forward" for very close photography. Depending on the camera to subject distance and aperture, the depth-of-field can be very narrow, limiting the linear depth of the area that will be in focus. Lenses are usually stopped down to give a greater depth-of-field.
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for many years, and have acquired a bad reputation: manufacturers of quality optics tend to use euphemisms such as "optical resin". However many modern, high performance (and high priced) lenses from popular manufacturers include molded or hybrid aspherical elements, so it is not true that all lenses with plastic elements are of low photographic quality.
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aberrations, which are worse at the edge of the field and when the edge of a large lens is used for image-forming. A long-focus lens of small aperture can be of very simple construction to attain comparable image quality: a doublet (two elements) will often suffice. Some older cameras were fitted with convertible lenses (German:
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of early lenses, particularly zoom lenses, especially where the lens was directly illuminated by a light source. The introduction many years ago of optical coatings, and advances in coating technology over the years, have resulted in major improvements, and modern high-quality zoom lenses give images
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which are difficult or impossible to manufacture in glass, and which simplify or improve lens manufacturing and performance. Plastics are not used for the outermost elements of all but the cheapest lenses as they scratch easily. Molded plastic lenses have been used for the cheapest disposable cameras
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very small subjects. A macro lens may be of any focal length, the actual focus length being determined by its practical use, considering magnification, the required ratio, access to the subject, and illumination considerations. It can be a special lens corrected optically for close up work or it can
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Practical lenses can be thought of as an answer to the question: "how can a pinhole lens be modified to admit more light and give a smaller spot size?". A first step is to put a simple convex lens at the pinhole with a focal length equal to the distance to the film plane (assuming the camera will
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The lens mount design is an important issue for compatibility between cameras and lenses. There is no universal standard for lens mounts, and each major camera maker typically uses its own proprietary design, incompatible with other makers. A few older manual focus lens mount designs, such as the
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The complexity of a lens — the number of elements and their degree of asphericity — depends upon the angle of view, the maximum aperture, and intended price point, among other variables. An extreme wideangle lens of large aperture must be of very complex construction to correct for optical
424: 626:) of normal focal length. The front element could be unscrewed, leaving a lens of twice the focal length, and half the angle of view and half the aperture. The simpler half-lens was of adequate quality for the narrow angle of view and small relative aperture. This would require the 404:, to regulate the time during which light may pass, may be incorporated within the lens assembly (for better quality imagery), within the camera, or even, rarely, in front of the lens. Some cameras with leaf shutters in the lens omit the aperture, and the shutter does double duty. 314:
by adjusting the distance from the lens assembly to the image plane, or by moving elements of the lens assembly. To improve performance, some lenses have a cam system that adjusts the distance between the groups as the lens is focused. Manufacturers call this different things:
239:; ideally, all rays of light leaving a point on the object that enter the entrance pupil will be focused to the same point on the image sensor/film (provided the object point is in the field of view). If one were inside the camera, one would see the lens acting as a 475:
than smaller apertures, other conditions being equal. Practical lens assemblies may also contain mechanisms to deal with measuring light, secondary apertures for flare reduction, and mechanisms to hold the aperture open until the instant of exposure to allow
785:) is any lens that produces an image on the focal plane (i.e., film or a digital sensor) that is one quarter of life size (1:4) to the same size (1:1) as the subject being imaged. There is no official standard to define a macro lens, usually a 483:
Focal lengths are usually specified in millimetres (mm), but older lenses might be marked in centimetres (cm) or inches. For a given film or sensor size, specified by the length of the diagonal, a lens may be classified as a:
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is blurry because each pixel is essentially the shadow of the aperture stop, so its size is no smaller than the size of the aperture (third image). Here a pixel is the area of the detector exposed to light from a point on the
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How focal length affects photograph composition: adjusting the camera's distance from the main subject while changing focal length, the main subject can remain the same size, while the other at a different distance changes
440:. The lens' focal length determines the magnification of the image projected onto the image plane, and the aperture the light intensity of that image. For a given photographic system the focal length determines the 653:
of quite acceptable contrast, although zoom lenses with many elements will transmit less light than lenses made with fewer elements (all other factors such as aperture, focal length, and coatings being equal).
140:. As shown, a pinhole "lens" is simply a small aperture that blocks most rays of light, ideally selecting one ray to the object for each point on the image sensor. Pinhole lenses have a few severe limitations: 123:
that arise. Some aberrations will be present in any lens system. It is the job of the lens designer to balance these and produce a design that is suitable for photographic use and possibly mass production.
644:, meaning "four"). The widest-range zooms often have fifteen or more. The reflection of light at each of the many interfaces between different optical media (air, glass, plastic) seriously degraded the 444:, short focal lengths giving a wider field of view than longer focal length lenses. A wider aperture, identified by a smaller f-number, allows using a faster shutter speed for the same exposure. The 205: 789:, but a 1:1 ratio is, typically, considered "true" macro. Magnification from life size to larger is called "Micro" photography (2:1, 3:1 etc.). This configuration is generally used to image 715:
mount for DSLRs, have also been licensed to other makers. Most large-format cameras take interchangeable lenses as well, which are usually mounted in a lensboard or on the front standard.
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light that could taint color. Most modern optical cements for bonding glass elements also block UV light, negating the need for a UV filter. However, this leaves an avenue for
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Glass is the most common material used to construct lens elements, due to its good optical properties and resistance to scratching. Other materials are also used, such as
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is one way to measure the resolving power of a lens. The quality of the material, coatings, and build affect the resolution. Lens resolution is ultimately limited by
1236: 1396: 503:: any lens with a focal length longer than the diagonal measure of the film or sensor. Angle of view is narrower. The most common type of long-focus lens is the 633:
Good-quality lenses with maximum aperture no greater than f/2.8 and fixed, normal, focal length need at least three (triplet) or four elements (the trade name "
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If the object is at a distance, one can assume the light rays will arrive perpendicular to the plane of the lens, and thus converge at the focal point.
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A side effect of using lenses of different focal lengths is the different distances from which a subject can be framed, resulting in a different
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lenses which give a soft, but not out-of-focus, image and have an imperfection-removing effect popular among portrait and fashion photographers.
370:, and very few photographic lenses approach this resolution. Ones that do are called "diffraction limited" and are usually extremely expensive. 843: 100:, or other apparatus, but the details of design and construction are different. A lens might be permanently fixed to a camera, or it might be 119:
will suffice, in practice a compound lens made up of a number of optical lens elements is required to correct (as much as possible) the many
396:, to regulate the amount of light that passes. In early camera models a rotating plate or slider with different sized holes was used. These 812:, have a focal length that varies as internal elements are moved, typically by rotating the barrel or pressing a button which activates an 389:
to attack if lenses are not cared for appropriately. UV photographers must go to great lengths to find lenses with no cement or coatings.
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The front element is critical to the performance of the whole assembly. In all modern lenses the surface is coated to reduce abrasion,
1181: 288:'s meniscus lens, to over 20 in the more complex zooms. These elements may themselves comprise a group of lenses cemented together. 1300: 1729: 880:: extreme wide-angle lenses with an angle of view of up to 180 degrees or more, with very noticeable (and intended) distortion. 688: 1835: 1582: 1534: 1515: 1272: 1215: 1278: 874:
allow the lens to be raised or lowered relative to the film of sensor plane to correct or exaggerate perspective distortion.
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Applied Photographic Optics: Lenses and Optical Systems for Photography, Film, Video, Electronic and Digital Imaging
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cameras to focus with a brighter image with shallower depth of field, theoretically allowing better focus accuracy.
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are found across multiple brands, but this is not common today. A few mount designs, such as the Olympus/Kodak
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With a small pinhole light is reduced, but diffraction prevents the image spot from getting arbitrarily small.
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lunar program to capture the far side of the Moon in 1966. Three of these lenses were purchased by filmmaker
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Making the pinhole smaller improves resolution (up to a limit), but reduces the amount of light captured.
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are collected at the entrance pupil and focused down from the exit pupil onto the image plane.
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At a certain point, shrinking the hole does not improve the resolution because of the
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rotate while attached to a camera body to give unique perspectives and camera angles.
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are equal. In a prime lens this is easy, but in a zoom there is always a compromise.
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The most common interchangeable lens mounts on the market today include the Canon
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A tilt/shift lens, set to its maximum degree of tilt relative to the camera body.
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An example of how lens choice affects angle of view. The photos were taken by a
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From the front of the camera, the small hole (the aperture), would be seen. The
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Different kinds of camera lenses, including wide angle, telephoto and speciality
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With a large pinhole, the image spot is large, resulting in a blurry image.
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or "close-up" photography (not to be confused with the compositional term
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and other unwanted effects. Some lenses have a UV coating to keep out the
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have detachable lenses. A few other types do as well, notably the Mamiya
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The widest aperture lens in history of photography is believed to be the
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The maximum usable aperture of a lens is specified as the focal ratio or
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A lens will most often have an aperture adjustment mechanism, usually an
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A camera lens may be made from a number of elements: from one, as in the
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Optical lens or assembly of lenses used with a camera to create images
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With a simple lens, much more light can be brought into sharp focus.
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There is no major difference in principle between a lens used for a
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This section is about the optical system. For the organism, see
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rays from an object pass through a small hole to form an image.
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Mastering Black-and-White Photography: From Camera to Darkroom
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of the aperture as seen from the world is known as the lens's
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Encyclopedia of Optical Engineering: Pho-Z, pages 2049-3050
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The two fundamental parameters of an optical lens are the
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The Lens: A Practical Guide for the Creative Photographer
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have extreme correction for aberrations of geometry (
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Some notable photographic optical lens designs are:
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may still be found on modern, specialized lenses. A
1229: 911:Shift lenses and tilt/shift lenses (collectively 61:or assembly of lenses used in conjunction with a 3197: 770: 730:autofocus lens mounts. Others include the Nikon 630:had to be extended to twice the normal length. 545:camera at a constant distance from the subject. 354:. Plastics allow the manufacturing of strongly 1103:"PhotoNotes.org Dictionary – Floating element" 861:(specialised projectors), rather than cameras. 536:, using candlelight as the sole light source. 73:or on other media capable of storing an image 1576: 1301:"Canon EF 20-35mm f/3.5~4.5 USM – Index Page" 1351: 1182:"Lenses: Fluorite, aspherical and UD lenses" 620: 407: 3128:Conservation and restoration of photographs 1447: 2865:Comparison of digital and film photography 1583: 1569: 691:. The lenses attach to the camera using a 3085:Photographs considered the most important 1502: 1324: 1095: 857:Enlarger lenses are made to be used with 530:in order to film scenes in his 1975 film 1260: 1239:. luminous-landscape.com. Archived from 952: 823: 422: 411: 268: 36: 1318: 1254: 1209: 836:(apo) lenses have added correction for 689:mirrorless interchangeable-lens cameras 456:on the focal plane of the camera lens. 319:calls it CRC (close range correction); 14: 3198: 1441: 467:divided by the effective aperture (or 419:in 1-stop increments on the same lens. 127: 1564: 1385: 604: 331:call it FLE (floating lens element). 1281:from the original on 27 October 2023 3080:Museums devoted to one photographer 1524: 1212:"The Macrolens Collection Database" 944:History of photographic lens design 265:History of photographic lens design 24: 2627:Timeline of photography technology 1508:A History of the Photographic Lens 1293: 819: 765: 742:Four Thirds and Olympus/Panasonic 452:reaching the camera sensor to the 25: 3217: 1544: 938:History and technical development 750:and autofocus variants, the Sony 734:manual and autofocus mounts, the 3178: 3168: 3167: 1237:"Understanding Lens Diffraction" 1105:. photonotes.org. Archived from 679:and SLR, medium format cameras ( 589: 577: 565: 553: 323:calls it a floating system; and 216: 204: 192: 176: 136:can be thought of as "improved" 3179: 1590: 1483: 1474: 1410: 1399:from the original on 2010-10-01 1376: 1307:from the original on 2014-10-25 1218:from the original on 2008-01-17 1192:from the original on 2011-08-14 1134:from the original on 2007-11-25 1054:Lenses for SLR and DSLR cameras 948: 364:1951 USAF resolution test chart 254: 183:Principle of a pinhole camera. 1203: 1174: 1145: 1120: 1086: 656: 144:A pinhole camera with a large 13: 1: 2677:Painted photography backdrops 2609:Golden triangle (composition) 1884:35 mm equivalent focal length 1079: 1030:treatment of optical surfaces 448:, or G#, is the ratio of the 1261:Driggers, Ronald G. (2003). 520:Carl Zeiss Planar 50mm f/0.7 7: 2387:Intentional camera movement 1128:"Ultraviolet Quartz Lenses" 1021: 915:) allow special control of 10: 3222: 3075:Most expensive photographs 2432:Multi-exposure HDR capture 1510:. Boston: Academic Press. 1496: 1186:Canon Professional Network 964: 941: 913:perspective control lenses 801: 669:single-lens reflex cameras 660: 610: 258: 29: 3163: 3120: 3067: 2972: 2915: 2821: 2705: 2617: 2569: 2309: 2076: 1876: 1598: 1074:William Taylor (inventor) 746:digital-only mounts, the 408:Aperture and focal length 104:with lenses of different 3009:Digital image processing 967:Photographic lens design 754:mount (derived from the 707:for early SLRs, and the 613:Photographic lens design 463:, defined as the lens's 356:aspherical lens elements 261:Photographic lens design 112:, and other properties. 2682:Photography and the law 1551:Photo.net Lens Tutorial 797: 373:Today, most lenses are 346:(Plexiglass), and even 3029:Gelatin silver process 2053:Science of photography 2038:Photographic processes 2016:Perspective distortion 1331:. Focal. p. 294. 962: 859:photographic enlargers 829: 621: 429: 420: 281: 166:"pencil" of light rays 65:body and mechanism to 55:photographic objective 42: 2487:Schlieren photography 2026:Photographic printing 1949:Exposure compensation 956: 942:Further information: 925:view camera movements 923:cameras by mimicking 848:pincushion distortion 827: 775:A macro lens used in 426: 415: 377:in order to minimize 272: 115:While in principle a 69:of objects either on 40: 2271:Straight photography 1909:Chromatic aberration 1448:Suess, B.J. (2003). 1210:Gottermeier, Klaus. 976:Angenieux retrofocus 838:chromatic aberration 808:Some lenses, called 762:digital-only mount. 758:mount) and the Sony 310:The lens usually is 3206:Photographic lenses 3138:photographic plates 2823:Digital photography 2001:Hyperfocal distance 1914:Circle of confusion 1525:Guy, N. K. (2012). 1130:. Universe Kogaku. 884:Stereoscopic lenses 771:"Close-up" or macro 673:rangefinder cameras 637:" derives from the 305:angle of refraction 297:surface reflectance 128:Theory of operation 121:optical aberrations 2642:Autochrome Lumière 2637:Analog photography 2462:Pigeon photography 2251:Social documentary 1730:discontinued films 1489:Guy 2012, page 266 1454:. Allworth Press. 1325:Ray, S.F. (2002). 1069:Teleside converter 963: 931:telecentric lenses 901:Ultraviolet lenses 866:aerial photography 830: 713:Four Thirds System 703:for rangefinders, 605:Number of elements 430: 421: 301:angle of incidence 282: 134:rectilinear lenses 117:simple convex lens 43: 3193: 3192: 2994:Collodion process 2930:Chromogenic print 2917:Color photography 2427:Multiple exposure 2402:Lo-fi photography 1929:Color temperature 1536:978-1-933952-97-0 1517:978-0-12-408640-1 1504:Kingslake, Rudolf 1480:Guy 2012, page 53 1274:978-0-8247-4252-2 1034:Large format lens 1001:Rapid Rectilinear 852:barrel distortion 744:Micro Four Thirds 157:diffraction limit 71:photographic film 51:photographic lens 18:Photographic lens 16:(Redirected from 3213: 3182: 3181: 3171: 3170: 3049:Print permanence 2999:Cross processing 2957:CMYK color model 2942:Color management 2895:Foveon X3 sensor 2890:Three-CCD camera 2534:Miniature faking 2492:Sabattier effect 2104:Astrophotography 1959:Zebra patterning 1585: 1578: 1571: 1562: 1561: 1540: 1521: 1490: 1487: 1481: 1478: 1472: 1471: 1469: 1468: 1445: 1439: 1438: 1436: 1435: 1429: 1423:. 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Archived from 1149: 1143: 1142: 1140: 1139: 1124: 1118: 1117: 1115: 1114: 1099: 1093: 1090: 961:rangefinder lens 650:color saturation 624: 593: 581: 569: 557: 436:and the maximum 398:Waterhouse stops 352:meteoritic glass 342:, plastics like 277:assembly of the 220: 208: 196: 180: 138:pinhole "lenses" 57:) is an optical 21: 3221: 3220: 3216: 3215: 3214: 3212: 3211: 3210: 3196: 3195: 3194: 3189: 3159: 3116: 3063: 3054:Push processing 2975: 2968: 2962:RGB color model 2911: 2817: 2701: 2613: 2579:Diagonal method 2565: 2305: 2209:Photojournalism 2072: 1904:Black-and-white 1872: 1851:Slide projector 1846:Movie projector 1725:available films 1594: 1589: 1547: 1537: 1518: 1499: 1494: 1493: 1488: 1484: 1479: 1475: 1466: 1464: 1462: 1446: 1442: 1433: 1431: 1427: 1420: 1416: 1415: 1411: 1402: 1400: 1391: 1390: 1386: 1381: 1377: 1368: 1366: 1357: 1356: 1352: 1343: 1341: 1339: 1323: 1319: 1310: 1308: 1299: 1298: 1294: 1284: 1282: 1275: 1259: 1255: 1246: 1244: 1235: 1234: 1230: 1221: 1219: 1208: 1204: 1195: 1193: 1180: 1179: 1175: 1166: 1164: 1151: 1150: 1146: 1137: 1135: 1126: 1125: 1121: 1112: 1110: 1101: 1100: 1096: 1091: 1087: 1082: 1024: 969: 951: 946: 940: 896:Infrared lenses 822: 820:Special-purpose 806: 800: 773: 768: 766:Types of lenses 665: 659: 615: 607: 602: 601: 600: 597: 594: 585: 582: 573: 570: 561: 558: 547: 546: 528:Stanley Kubrick 501:Long-focus lens 495:Wide-angle lens 446:camera equation 410: 267: 259:Main articles: 257: 249:pencils of rays 229: 228: 227: 224: 221: 212: 209: 200: 197: 188: 181: 130: 102:interchangeable 49:(also known as 35: 28: 23: 22: 15: 12: 11: 5: 3219: 3209: 3208: 3191: 3190: 3188: 3187: 3176: 3164: 3161: 3160: 3158: 3157: 3152: 3147: 3142: 3141: 3140: 3135: 3124: 3122: 3118: 3117: 3115: 3114: 3113: 3112: 3107: 3102: 3097: 3087: 3082: 3077: 3071: 3069: 3065: 3064: 3062: 3061: 3056: 3051: 3046: 3041: 3036: 3031: 3026: 3021: 3016: 3011: 3006: 3001: 2996: 2991: 2986: 2980: 2978: 2970: 2969: 2967: 2966: 2965: 2964: 2959: 2954: 2949: 2939: 2934: 2933: 2932: 2921: 2919: 2913: 2912: 2910: 2909: 2904: 2899: 2898: 2897: 2892: 2887: 2882: 2872: 2867: 2862: 2857: 2856: 2855: 2850: 2845: 2844: 2843: 2831:Digital camera 2827: 2825: 2819: 2818: 2816: 2815: 2810: 2805: 2800: 2795: 2790: 2785: 2780: 2775: 2770: 2765: 2760: 2755: 2750: 2745: 2740: 2735: 2730: 2725: 2720: 2715: 2709: 2707: 2703: 2702: 2700: 2699: 2694: 2689: 2684: 2679: 2674: 2669: 2664: 2659: 2657:Camera obscura 2654: 2649: 2644: 2639: 2634: 2629: 2623: 2621: 2615: 2614: 2612: 2611: 2606: 2601: 2599:Rule of thirds 2596: 2591: 2586: 2581: 2575: 2573: 2567: 2566: 2564: 2563: 2558: 2553: 2548: 2543: 2538: 2537: 2536: 2526: 2521: 2520: 2519: 2509: 2504: 2499: 2494: 2489: 2484: 2479: 2474: 2469: 2464: 2459: 2454: 2449: 2444: 2439: 2434: 2429: 2424: 2419: 2414: 2409: 2404: 2399: 2394: 2389: 2384: 2379: 2374: 2369: 2367:Harris shutter 2364: 2362:Hand-colouring 2359: 2354: 2349: 2344: 2339: 2334: 2329: 2324: 2319: 2313: 2311: 2307: 2306: 2304: 2303: 2298: 2293: 2288: 2283: 2278: 2273: 2268: 2263: 2258: 2253: 2248: 2247: 2246: 2236: 2231: 2226: 2221: 2216: 2211: 2206: 2201: 2196: 2191: 2186: 2181: 2176: 2171: 2166: 2161: 2156: 2151: 2146: 2141: 2136: 2131: 2126: 2121: 2116: 2111: 2106: 2101: 2096: 2091: 2086: 2080: 2078: 2074: 2073: 2071: 2070: 2065: 2060: 2055: 2050: 2048:Red-eye effect 2045: 2040: 2035: 2034: 2033: 2023: 2018: 2013: 2008: 2003: 1998: 1993: 1988: 1983: 1982: 1981: 1976: 1966: 1961: 1956: 1954:Exposure value 1951: 1946: 1941: 1939:Depth of focus 1936: 1934:Depth of field 1931: 1926: 1921: 1916: 1911: 1906: 1901: 1896: 1891: 1886: 1880: 1878: 1874: 1873: 1871: 1870: 1865: 1864: 1863: 1853: 1848: 1843: 1838: 1833: 1832: 1831: 1826: 1821: 1816: 1811: 1806: 1801: 1791: 1790: 1789: 1784: 1779: 1774: 1769: 1764: 1759: 1754: 1749: 1739: 1734: 1733: 1732: 1727: 1722: 1717: 1712: 1707: 1697: 1692: 1691: 1690: 1685: 1675: 1674: 1673: 1668: 1663: 1658: 1653: 1648: 1643: 1638: 1633: 1628: 1623: 1618: 1613: 1602: 1600: 1596: 1595: 1588: 1587: 1580: 1573: 1565: 1559: 1558: 1553: 1546: 1545:External links 1543: 1542: 1541: 1535: 1529:. Rocky Nook. 1522: 1516: 1498: 1495: 1492: 1491: 1482: 1473: 1460: 1440: 1409: 1384: 1375: 1350: 1337: 1317: 1303:. mir.com.my. 1292: 1273: 1253: 1228: 1202: 1173: 1144: 1119: 1094: 1084: 1083: 1081: 1078: 1077: 1076: 1071: 1066: 1061: 1056: 1051: 1046: 1041: 1036: 1031: 1023: 1020: 1019: 1018: 1013: 1008: 1003: 998: 993: 988: 983: 978: 965:Main article: 950: 947: 939: 936: 935: 934: 928: 909: 903: 898: 893: 887: 881: 878:Fisheye lenses 875: 869: 862: 855: 844:Process lenses 841: 821: 818: 814:electric motor 802:Main article: 799: 796: 772: 769: 767: 764: 748:Pentax K mount 709:Pentax K mount 705:M42 lens mount 701:M39 lens mount 661:Main article: 658: 655: 611:Main article: 606: 603: 599: 598: 595: 588: 586: 583: 576: 574: 571: 564: 562: 559: 552: 549: 548: 540: 539: 538: 509: 508: 505:telephoto lens 498: 492: 473:depth of field 469:entrance pupil 409: 406: 394:iris diaphragm 256: 253: 237:entrance pupil 226: 225: 222: 215: 213: 210: 203: 201: 198: 191: 189: 182: 175: 172: 171: 170: 161: 160: 153: 150: 129: 126: 79:electronically 26: 9: 6: 4: 3: 2: 3218: 3207: 3204: 3203: 3201: 3186: 3177: 3175: 3166: 3165: 3162: 3156: 3153: 3151: 3148: 3146: 3143: 3139: 3136: 3134: 3131: 3130: 3129: 3126: 3125: 3123: 3119: 3111: 3108: 3106: 3103: 3101: 3098: 3096: 3093: 3092: 3091: 3090:Photographers 3088: 3086: 3083: 3081: 3078: 3076: 3073: 3072: 3070: 3066: 3060: 3057: 3055: 3052: 3050: 3047: 3045: 3042: 3040: 3037: 3035: 3032: 3030: 3027: 3025: 3022: 3020: 3017: 3015: 3012: 3010: 3007: 3005: 3002: 3000: 2997: 2995: 2992: 2990: 2987: 2985: 2984:Bleach bypass 2982: 2981: 2979: 2977: 2971: 2963: 2960: 2958: 2955: 2953: 2952:primary color 2950: 2948: 2945: 2944: 2943: 2940: 2938: 2937:Reversal film 2935: 2931: 2928: 2927: 2926: 2923: 2922: 2920: 2918: 2914: 2908: 2905: 2903: 2902:Image sharing 2900: 2896: 2893: 2891: 2888: 2886: 2883: 2881: 2878: 2877: 2876: 2873: 2871: 2868: 2866: 2863: 2861: 2858: 2854: 2851: 2849: 2846: 2842: 2839: 2838: 2837: 2834: 2833: 2832: 2829: 2828: 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2428: 2425: 2423: 2420: 2418: 2415: 2413: 2410: 2408: 2407:Long-exposure 2405: 2403: 2400: 2398: 2395: 2393: 2390: 2388: 2385: 2383: 2380: 2378: 2375: 2373: 2370: 2368: 2365: 2363: 2360: 2358: 2355: 2353: 2350: 2348: 2345: 2343: 2340: 2338: 2335: 2333: 2330: 2328: 2325: 2323: 2320: 2318: 2315: 2314: 2312: 2308: 2302: 2299: 2297: 2294: 2292: 2289: 2287: 2284: 2282: 2279: 2277: 2274: 2272: 2269: 2267: 2264: 2262: 2259: 2257: 2254: 2252: 2249: 2245: 2242: 2241: 2240: 2237: 2235: 2232: 2230: 2227: 2225: 2222: 2220: 2217: 2215: 2212: 2210: 2207: 2205: 2202: 2200: 2197: 2195: 2192: 2190: 2187: 2185: 2182: 2180: 2177: 2175: 2172: 2170: 2167: 2165: 2162: 2160: 2157: 2155: 2152: 2150: 2147: 2145: 2142: 2140: 2137: 2135: 2132: 2130: 2127: 2125: 2122: 2120: 2117: 2115: 2112: 2110: 2107: 2105: 2102: 2100: 2099:Architectural 2097: 2095: 2092: 2090: 2087: 2085: 2082: 2081: 2079: 2075: 2069: 2066: 2064: 2061: 2059: 2058:Shutter speed 2056: 2054: 2051: 2049: 2046: 2044: 2041: 2039: 2036: 2032: 2029: 2028: 2027: 2024: 2022: 2019: 2017: 2014: 2012: 2011:Metering mode 2009: 2007: 2004: 2002: 1999: 1997: 1994: 1992: 1989: 1987: 1984: 1980: 1977: 1975: 1972: 1971: 1970: 1967: 1965: 1962: 1960: 1957: 1955: 1952: 1950: 1947: 1945: 1942: 1940: 1937: 1935: 1932: 1930: 1927: 1925: 1924:Color balance 1922: 1920: 1917: 1915: 1912: 1910: 1907: 1905: 1902: 1900: 1897: 1895: 1892: 1890: 1889:Angle of view 1887: 1885: 1882: 1881: 1879: 1875: 1869: 1866: 1862: 1859: 1858: 1857: 1854: 1852: 1849: 1847: 1844: 1842: 1839: 1837: 1836:Manufacturers 1834: 1830: 1827: 1825: 1822: 1820: 1817: 1815: 1812: 1810: 1807: 1805: 1802: 1800: 1797: 1796: 1795: 1792: 1788: 1785: 1783: 1780: 1778: 1775: 1773: 1770: 1768: 1765: 1763: 1760: 1758: 1755: 1753: 1750: 1748: 1745: 1744: 1743: 1740: 1738: 1735: 1731: 1728: 1726: 1723: 1721: 1718: 1716: 1713: 1711: 1708: 1706: 1703: 1702: 1701: 1698: 1696: 1693: 1689: 1686: 1684: 1681: 1680: 1679: 1676: 1672: 1669: 1667: 1664: 1662: 1659: 1657: 1654: 1652: 1649: 1647: 1644: 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CRC Press. 1266: 1265: 1257: 1243:on 2014-10-25 1242: 1238: 1232: 1217: 1213: 1206: 1191: 1187: 1183: 1177: 1163:on 2009-05-30 1162: 1158: 1154: 1148: 1133: 1129: 1123: 1109:on 2014-08-10 1108: 1104: 1098: 1089: 1085: 1075: 1072: 1070: 1067: 1065: 1064:Teleconverter 1062: 1060: 1059:Optical train 1057: 1055: 1052: 1050: 1047: 1045: 1042: 1040: 1039:Lens (optics) 1037: 1035: 1032: 1029: 1026: 1025: 1017: 1014: 1012: 1009: 1007: 1004: 1002: 999: 997: 994: 992: 989: 987: 984: 982: 981:Cooke triplet 979: 977: 974: 973: 972: 968: 960: 955: 945: 932: 929: 926: 922: 918: 914: 910: 907: 906:Swivel lenses 904: 902: 899: 897: 894: 891: 888: 885: 882: 879: 876: 873: 870: 867: 863: 860: 856: 853: 849: 845: 842: 839: 835: 832: 831: 826: 817: 815: 811: 805: 795: 792: 788: 784: 783: 778: 763: 761: 757: 753: 749: 745: 741: 737: 733: 729: 725: 721: 716: 714: 710: 706: 702: 696: 694: 690: 686: 682: 678: 674: 670: 664: 654: 651: 647: 643: 640: 636: 631: 629: 625: 623: 614: 609: 592: 587: 580: 575: 568: 563: 556: 551: 550: 544: 537: 535: 534: 529: 525: 521: 516: 514: 506: 502: 499: 496: 493: 490: 487: 486: 485: 481: 479: 474: 470: 466: 462: 457: 455: 451: 447: 443: 442:angle of view 439: 435: 425: 418: 414: 405: 403: 399: 395: 390: 388: 384: 380: 376: 371: 369: 365: 360: 357: 353: 349: 345: 341: 337: 332: 330: 326: 322: 318: 313: 308: 306: 302: 298: 294: 289: 287: 280: 276: 271: 266: 262: 252: 250: 246: 242: 238: 234: 233:virtual image 219: 214: 207: 202: 195: 190: 186: 179: 174: 173: 169: 167: 158: 154: 151: 147: 143: 142: 141: 139: 135: 125: 122: 118: 113: 111: 107: 106:focal lengths 103: 99: 95: 91: 87: 82: 80: 76: 72: 68: 64: 60: 56: 52: 48: 39: 33: 19: 3150:Polaroid art 3044:K-14 process 3039:Instant film 3034:Gum printing 2989:C-41 process 2974:Photographic 2875:Image sensor 2870:Film scanner 2524:Sun printing 2457:Print toning 2244:space selfie 2214:Pictorialism 2144:Ethnographic 2124:Conservation 1996:Guide number 1991:Focal length 1793: 1526: 1507: 1485: 1476: 1465:. 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Retrieved 1107:the original 1097: 1088: 1028:Anti-fogging 1016:Zeiss Tessar 1011:Zeiss Planar 1006:Zeiss Sonnar 986:Double-Gauss 970: 957:Collapsible 949:Lens designs 809: 807: 790: 780: 774: 717: 697: 692: 666: 641: 632: 622:Satzobjektiv 619: 616: 608: 533:Barry Lyndon 531: 517: 510: 482: 465:focal length 458: 434:focal length 431: 391: 375:multi-coated 372: 361: 336:quartz glass 333: 309: 290: 283: 255:Construction 230: 162: 131: 114: 90:video camera 86:still camera 83: 54: 50: 46: 44: 3155:Stereoscopy 3019:E-6 process 3014:Dye coupler 2947:color space 2860:Digiscoping 2853:camera back 2768:Philippines 2697:Visual arts 2687:Glass plate 2672:Heliography 2571:Composition 2546:Ultraviolet 2502:Stereoscopy 2497:Slow motion 2482:Scanography 2397:Kite aerial 2337:Contre-jour 2229:Post-mortem 2219:Pornography 2199:Neues Sehen 2134:Documentary 2068:Zone System 2043:Reciprocity 1969:Film format 1899:Backscatter 1877:Terminology 1747:beauty dish 1646:rangefinder 1611:light-field 1592:Photography 996:Leitz Elmar 991:Goerz Dagor 917:perspective 864:Lenses for 810:zoom lenses 677:TLR cameras 657:Lens mounts 596:210 mm lens 513:perspective 489:Normal lens 387:lens fungus 383:ultraviolet 368:diffraction 286:Box Brownie 67:make images 47:camera lens 32:Kamera lens 3145:Lomography 2976:processing 2925:Print film 2841:comparison 2808:Uzbekistan 2758:Luxembourg 2718:Bangladesh 2667:Dufaycolor 2647:Box camera 2604:Simplicity 2561:Zoom burst 2556:Xerography 2551:Vignetting 2541:Time-lapse 2529:Tilt–shift 2422:Mordançage 2412:Luminogram 2377:Holography 2372:High-speed 2352:Fill flash 2332:Burst mode 2310:Techniques 2291:Vernacular 2286:Underwater 2281:Toy camera 2261:Still life 2189:Monochrome 2179:High-speed 2129:Cloudscape 2119:Conceptual 2021:Photograph 2006:Lens flare 1986:Film speed 1868:Zone plate 1814:wide-angle 1799:long-focus 1467:2014-10-25 1434:2012-10-27 1403:2014-12-12 1369:2014-12-12 1344:2014-12-12 1311:2014-10-25 1247:2014-10-25 1222:2007-11-05 1196:2008-10-04 1167:2007-11-05 1138:2007-11-05 1113:2014-10-25 1080:References 1049:Lens cover 890:Soft-focus 872:Shift lens 834:Apochromat 787:prime lens 693:lens mount 663:Lens mount 584:70 mm lens 572:50 mm lens 560:28 mm lens 454:irradiance 379:lens flare 325:Hasselblad 279:Canon Elph 245:exit pupil 98:microscope 75:chemically 3095:Norwegian 3059:Stop bath 3004:Developer 2632:Ambrotype 2594:Lead room 2517:Slit-scan 2452:Photogram 2447:Panoramic 2357:Fireworks 2342:Cyanotype 2184:Landscape 1829:telephoto 1777:reflector 1772:monolight 1767:lens hood 1752:cucoloris 1688:safelight 1599:Equipment 1044:Lens hood 804:Zoom lens 671:and some 417:Apertures 348:germanium 275:zoom lens 241:projector 110:apertures 94:telescope 3200:Category 3174:Category 2880:CMOS APS 2778:Slovenia 2706:Regional 2652:Calotype 2589:Headroom 2467:Redscale 2382:Infrared 2327:Brenizer 2301:Wildlife 2224:Portrait 2169:Forensic 2159:Fine-art 2094:Aircraft 2084:Abstract 1964:F-number 1944:Exposure 1919:Clipping 1894:Aperture 1762:hot shoe 1683:enlarger 1678:Darkroom 1506:(1989). 1397:Archived 1305:Archived 1279:Archived 1216:Archived 1190:Archived 1132:Archived 1022:See also 791:close-up 782:close up 646:contrast 461:f-number 450:radiance 438:aperture 340:fluorite 303:and the 146:aperture 132:Typical 3185:Outline 3121:Related 2813:Vietnam 2798:Ukraine 2733:Denmark 2713:Albania 2692:Tintype 2619:History 2584:Framing 2477:Rollout 2442:Panning 2392:Kirlian 2296:Wedding 2174:Glamour 2154:Fashion 2139:Eclipse 2109:Banquet 2031:Albumen 1841:Monopod 1819:fisheye 1787:softbox 1636:pinhole 1626:instant 1616:digital 1497:Sources 1285:18 June 756:Minolta 736:Olympus 642:tessera 628:bellows 402:shutter 344:acrylic 312:focused 149:object. 3183:  3172:  3105:street 3100:Polish 2793:Turkey 2788:Taiwan 2773:Serbia 2763:Norway 2738:Greece 2723:Canada 2317:Afocal 2276:Street 2256:Sports 2239:Selfie 2194:Nature 2149:Erotic 2114:Candid 2089:Aerial 2077:Genres 1979:medium 1856:Tripod 1824:swivel 1737:Filter 1715:holder 1710:format 1606:Camera 1533:  1514:  1458:  1335:  1271:  699:Leica 635:Tessar 524:Apollo 329:Mamiya 295:, and 63:camera 3110:women 3068:Lists 3024:Fixer 2907:Pixel 2836:D-SLR 2783:Sudan 2753:Korea 2748:Japan 2743:India 2728:China 2512:Strip 2437:Night 2417:Macro 2322:Bokeh 2266:Stock 2234:Ruins 1974:large 1804:prime 1782:snoot 1742:Flash 1720:stock 1695:Drone 1656:still 1641:press 1631:phone 1621:field 1428:(PDF) 1421:(PDF) 1157:Canon 959:Leica 777:macro 752:Alpha 740:Kodak 667:Many 639:Greek 543:35 mm 428:size. 321:Canon 317:Nikon 293:flare 185:Light 3133:film 2848:MILC 2347:ETTR 2204:Nude 2164:Fire 2063:Sync 1861:head 1809:zoom 1794:Lens 1757:gobo 1705:base 1700:Film 1671:view 1531:ISBN 1512:ISBN 1456:ISBN 1333:ISBN 1287:2020 1269:ISBN 798:Zoom 728:EF-M 726:and 724:EF-S 685:RB67 681:RZ67 648:and 362:The 350:and 327:and 273:The 263:and 96:, a 92:, a 88:, a 59:lens 2885:CCD 1666:toy 1661:TLR 1651:SLR 921:SLR 919:on 478:SLR 77:or 53:or 3202:: 1277:. 1214:. 1188:. 1184:. 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Index

Photographic lens
Kamera lens

lens
camera
make images
photographic film
chemically
electronically
still camera
video camera
telescope
microscope
interchangeable
focal lengths
apertures
simple convex lens
optical aberrations
rectilinear lenses
pinhole "lenses"
aperture
diffraction limit
"pencil" of light rays
Principle of a pinhole camera. Light rays from an object pass through a small hole to form an image.
Light
With a large pinhole, the image spot is large, resulting in a blurry image.
With a small pinhole light is reduced, but diffraction prevents the image spot from getting arbitrarily small.
With a simple lens, much more light can be brought into sharp focus.
virtual image
entrance pupil

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