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107:(width-to-height ratio) of 3:2, while many digital cameras have a 4:3 aspect ratio, which have different diagonal-to-width ratios, these two definitions are often not equivalent, i.e., the equivalent focal length based on the diagonal angle of view differs from the equivalent focal length based on the horizontal angle of view.
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and the angle of view due to possibilities of using various image sensor sizes at the same focal length (i.e., a different image sensor size resulting in a different angle of view at the same lens focal length). The 35 mm equivalent focal length of a particular lens–sensor combination is the
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A standard 35 mm film image is 36 mm wide by 24 mm tall (35 mm refers to the height of the film including the perforations for film transport), and the diagonal is 43.3 mm. This leads to the following conversion formulas for a lens with a true focal length
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According to CIPA guidelines, 35 mm equivalent focal length is to be calculated like this: "Converted focal length into 35 mm camera" = (Diagonal distance of image area in the 35 mm camera (43.27 mm) / Diagonal distance of image area on the image sensor of the
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For historical reasons, sensor size specifications such as 1/2.5" do not match the actual sensor size, but are a bit larger (typically about a factor of 1.5) than the actual sensor diagonal. This is because these sensor size specifications refer to the size of a
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Equivalent depth of field can be calculated the same way using the crop factor. For example, a 50mm f/2 lens on a 2Ă— crop factor Micro Four Thirds camera would be equivalent to a 100 mm (= 2Ă—50 mm) f/4 (= f/(2Ă—2)) lens on a
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focal length that one would need for a 35 mm film camera to obtain the same angle of view. Two lens-sensor combinations with the same 35 mm equivalent focal length are expected to have the same angle of view.
83:. Because digital cameras have mostly replaced film cameras and the image sensor size that also determines the angle of view is not standardized as the film size was, there is no uniform relation between the lens
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190:, depth of field, total light gathered, and diffraction effects. However for the purposes of exposure calculations the aperture does not change for different sensor sizes.
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68:. The term is popular because in the early years of digital photography, most photographers experienced with interchangeable lenses were most familiar with the
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The resulting images from 50 mm and 70 mm lenses for different sensor sizes; 36x24 mm (red) and 24x18 mm (blue)
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Apart from the width- and diagonal-based 35 mm equivalent focal length definitions, there is a third definition:
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35 mm equivalent focal lengths are calculated by multiplying the actual focal length of the lens by the
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format, 2.7Ă— for 1-inch sensors (used in Nikon 1 cameras and some Sony RX cameras), 5Ă— to 6Ă— for
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449:"CIPA DCG-001-Translation-2005 Guideline for Noting Digital Camera Specifications in Catalogs"
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Most commonly, the 35 mm equivalent focal length is based on equal
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95:angle of view. This definition is also in the
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433:What is "35 mm equivalent focal length?"
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503:"What is equivalence and why should I care?"
2134:Conservation and restoration of photographs
1871:Comparison of digital and film photography
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158:) Ă— focal length of the lens of the DSC.
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1633:Timeline of photography technology
57:for a particular combination of a
51:35 mm equivalent focal length
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79:, and a 200 mm lens is a
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1683:Painted photography backdrops
1615:Golden triangle (composition)
890:35 mm equivalent focal length
150:like cell phones or tablets.
18:35mm equivalent focal length
1393:Intentional camera movement
435:The Panorama Factory, 2004.
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2081:Most expensive photographs
1438:Multi-exposure HDR capture
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162:Depth of field equivalent
2015:Digital image processing
481:"Digital Depth of Field"
30:Not to be confused with
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544:Focal Length Conversion
144:compact digital cameras
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2035:Gelatin silver process
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1044:Photographic processes
1022:Perspective distortion
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97:CIPA guideline DCG-001
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32:effective focal length
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1032:Photographic printing
955:Exposure compensation
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263:4:3 (sensor diagonal
138:APS-C format, 2Ă— for
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1277:Straight photography
915:Chromatic aberration
53:is a measure of the
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1829:Digital photography
1007:Hyperfocal distance
920:Circle of confusion
212:diagonal-based EFL
1648:Autochrome Lumière
1643:Analog photography
1468:Pigeon photography
1257:Social documentary
736:discontinued films
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220:4:3 (sensor width
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2000:Collodion process
1936:Chromogenic print
1923:Color photography
1433:Multiple exposure
1408:Lo-fi photography
935:Color temperature
501:Butler, Richard.
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127:format, 1.5Ă— for
66:image sensor size
16:(Redirected from
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2005:Cross processing
1963:CMYK color model
1948:Color management
1901:Foveon X3 sensor
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1498:Sabattier effect
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548:medium format
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479:Atkins, Bob.
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461:on 2017-02-02
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55:angle of view
52:
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39:
33:
19:
2156:Polaroid art
2050:K-14 process
2045:Instant film
2040:Gum printing
1995:C-41 process
1980:Photographic
1881:Image sensor
1876:Film scanner
1530:Sun printing
1463:Print toning
1250:space selfie
1220:Pictorialism
1150:Ethnographic
1130:Conservation
1002:Guide number
997:Focal length
889:
558:Focal Length
552:large format
528:Sensor sizes
522:
510:. Retrieved
506:
496:
484:. Retrieved
474:
463:. Retrieved
456:the original
410:
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186:in terms of
180:
165:
152:
114:
105:aspect ratio
100:
92:
90:
85:focal length
74:
64:and film or
50:
44:
27:Camera setup
2161:Stereoscopy
2025:E-6 process
2020:Dye coupler
1953:color space
1866:Digiscoping
1859:camera back
1774:Philippines
1703:Visual arts
1693:Glass plate
1678:Heliography
1577:Composition
1552:Ultraviolet
1508:Stereoscopy
1503:Slow motion
1488:Scanography
1403:Kite aerial
1343:Contre-jour
1235:Post-mortem
1225:Pornography
1205:Neues Sehen
1140:Documentary
1074:Zone System
1049:Reciprocity
975:Film format
905:Backscatter
883:Terminology
753:beauty dish
652:rangefinder
617:light-field
598:Photography
396:camera tube
209:Image size
194:Conversions
117:crop factor
111:Calculation
47:photography
2151:Lomography
1982:processing
1931:Print film
1847:comparison
1814:Uzbekistan
1764:Luxembourg
1724:Bangladesh
1673:Dufaycolor
1653:Box camera
1610:Simplicity
1567:Zoom burst
1562:Xerography
1557:Vignetting
1547:Time-lapse
1535:Tilt–shift
1428:Mordançage
1418:Luminogram
1383:Holography
1378:High-speed
1358:Fill flash
1338:Burst mode
1316:Techniques
1297:Vernacular
1292:Underwater
1287:Toy camera
1267:Still life
1195:Monochrome
1185:High-speed
1135:Cloudscape
1125:Conceptual
1027:Photograph
1012:Lens flare
992:Film speed
874:Zone plate
820:wide-angle
805:long-focus
465:2015-10-19
417:References
101:horizontal
70:35 mm film
2101:Norwegian
2065:Stop bath
2010:Developer
1638:Ambrotype
1600:Lead room
1523:Slit-scan
1458:Photogram
1453:Panoramic
1363:Fireworks
1348:Cyanotype
1190:Landscape
835:telephoto
783:reflector
778:monolight
773:lens hood
758:cucoloris
694:safelight
605:Equipment
512:22 August
2206:Category
2180:Category
1886:CMOS APS
1784:Slovenia
1712:Regional
1658:Calotype
1595:Headroom
1473:Redscale
1388:Infrared
1333:Brenizer
1307:Wildlife
1230:Portrait
1175:Forensic
1165:Fine-art
1100:Aircraft
1090:Abstract
970:F-number
950:Exposure
925:Clipping
900:Aperture
768:hot shoe
689:enlarger
684:Darkroom
562:dpreview
507:DPReview
176:f number
172:aperture
93:diagonal
72:format.
2191:Outline
2127:Related
1819:Vietnam
1804:Ukraine
1739:Denmark
1719:Albania
1698:Tintype
1625:History
1590:Framing
1483:Rollout
1448:Panning
1398:Kirlian
1302:Wedding
1180:Glamour
1160:Fashion
1145:Eclipse
1115:Banquet
1037:Albumen
847:Monopod
825:fisheye
793:softbox
642:pinhole
632:instant
622:digital
379:= 43.3
362:= 43.3
336:= 36.0
319:= 36.0
293:= 45.0
276:= 43.3
250:= 36.0
233:= 34.6
2189:
2178:
2111:street
2106:Polish
1799:Turkey
1794:Taiwan
1779:Serbia
1769:Norway
1744:Greece
1729:Canada
1323:Afocal
1282:Street
1262:Sports
1245:Selfie
1200:Nature
1155:Erotic
1120:Candid
1095:Aerial
1083:Genres
985:medium
862:Tripod
830:swivel
743:Filter
721:holder
716:format
612:Camera
486:23 May
59:camera
49:, the
2116:women
2074:Lists
2030:Fixer
1913:Pixel
1842:D-SLR
1789:Sudan
1759:Korea
1754:Japan
1749:India
1734:China
1518:Strip
1443:Night
1423:Macro
1328:Bokeh
1272:Stock
1240:Ruins
980:large
810:prime
788:snoot
748:Flash
726:stock
701:Drone
662:still
647:press
637:phone
627:field
459:(PDF)
452:(PDF)
405:= 50
136:Canon
132:APS-C
129:Nikon
125:APS-H
123:"H")
121:Sigma
2139:film
1854:MILC
1353:ETTR
1210:Nude
1170:Fire
1069:Sync
867:head
815:zoom
800:Lens
763:gobo
711:base
706:Film
677:view
550:and
546:for
514:2019
488:2012
62:lens
1891:CCD
672:toy
667:TLR
657:SLR
560:at
403:EFL
387:mm
370:mm
344:mm
327:mm
301:mm
284:mm
258:mm
241:mm
156:DSC
45:In
2208::
505:.
440:^
425:^
377:35
360:35
353:)
334:35
317:35
310:)
291:35
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248:35
231:35
224:)
203::
590:e
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34:.
20:)
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