Lihat sumber Nilai pajanan

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Dalam [[fotografi]], '''nilai pajanan''' ({{Lang-en|exposure value}}, EV) adalah angka yang mewakili kombinasi [[Kecepatan rana|kecepatan rana kamera]] dan [[Bukaan (fotografi)|f-number]], sehingga semua kombinasi yang menghasilkan [[pajanan]] yang sama memiliki EV yang sama (untuk [[pencahayaan]] pemandangan tetap). 

Konsep nilai pajanan dikembangkan oleh produsen rana Jerman {{Interlanguage link|Friedrich Deckel|de|Friedrich Deckel}} pada 1950-an.<ref>Gebele 1958; Ray 2000, 318</ref> Tujuannya adalah untuk menyederhanakan pemilihan di antara pengaturan pajanan kamera yang setara dengan mengganti kombinasi kecepatan rana dan bilangan ''f'' (misalnya, 1/125&nbsp;s pada ''f'' /16) dengan satu nomor (misalnya, 15). Pada beberapa lensa dengan [[Rana|rana daun]] (''leaf shutter''), prosesnya disederhanakan lebih lanjut dengan memungkinkan pengendalian rana dan apertur dihubungkan sedemikian rupa sehingga, ketika salah satunya diubah, yang lain secara otomatis disesuaikan untuk mempertahankan nilai pajanan yang sama. konsep ini sangat membantu bagi pemula dengan pemahaman terbatas tentang efek kecepatan rana dan bukaan serta hubungan di antara keduanya. Namun, ini juga berguna bagi fotografer berpengalaman yang mungkin memilih kecepatan rana untuk menghentikan gerakan atau bilangan ''f'' untuk kedalaman pandangan (''depth of field''), karena memungkinkan penyesuaian lebih cepat—tanpa perlu perhitungan secara mental—dan mengurangi kemungkinan kesalahan saat melakukan pengaturan.

==Catatan==
{{reflist}}

== Referensi ==

* <cite id="CITEREFAdams1981">Adams, Ansel. 1981. ''The Negative.'' </cite><cite id="CITEREFAdams1981">Boston: New York Graphic Society.</cite> {{ISBN|0-8212-1131-5}}
* <cite id="CITEREFANSI_PH2.7-1973">ANSI PH2.7-1973. ''American National Standard Photographic Exposure Guide''. </cite><cite id="CITEREFANSI_PH2.7-1973">New York: American National Standards Institute.</cite> Superseded by ANSI PH2.7-1986
* <cite id="CITEREFANSI_PH2.7-1986">ANSI PH2.7-1986. ''American National Standard for Photography &#x2014; Photographic Exposure Guide''. New York: American National Standards Institute.</cite>
* <cite id="CITEREFASA_PH2.5-1960">ASA PH2.5-1960. ''American Standard Method for Determining Speed of photographic Negative Materials (Monochrome, Continuous Tone)''. New York: United States of America Standards Institute.</cite>
* <cite id="CITEREFASA_PH2.15-1964">ASA PH2.15-1964 (R1976). ''American Standard: Automatic Exposure Controls for Cameras''. New York: United States of America Standards Institute.</cite>
* <cite id="CITEREFCIPA2016">"Camera and Imaging Products Association". 2016. [http://cipa.jp/std/documents/e/DC-008-Translation-2016-E.pdf Exchangeable image file format for digital still cameras: Exif Version 2.31] {{Webarchive|url=https://web.archive.org/web/20190712232333/http://www.cipa.jp/std/documents/e/DC-008-Translation-2016-E.pdf |date=2019-07-12 }} ([[Portable Document Format|PDF]]).</cite>
* <cite id="CITEREFCanonWWW">Canon. n.d. [http://cpn.canon-europe.com/content/education/infobank/camera_settings/shooting_modes.do "Camera settings: Shooting modes"] {{Webarchive|url=https://web.archive.org/web/20130527160525/http://cpn.canon-europe.com/content/education/infobank/camera_settings/shooting_modes.do |date=2013-05-27 }}. Canon Professional Network. Retrieved 5 December 2016.</cite>
* CIPA. ''See'' Camera and Imaging Products Association.
* <cite id="CITEREFDavis1999">Davis, Phil. 1999. ''[http://books.elsevier.com/us/focalbooks/us/subindex.asp?isbn=0240803434 Beyond the Zone System] {{Webarchive|url=https://web.archive.org/web/20070310222228/http://books.elsevier.com/us/focalbooks/us/subindex.asp?isbn=0240803434 |date=2007-03-10 }}'', 4th ed. </cite><cite id="CITEREFDavis1999">Boston: Focal Press.</cite>  {{ISBN|0-240-80343-4}}[[ISBN (identifier)|ISBN]]&nbsp;[[Special:BookSources/0-240-80343-4|0-240-80343-4]]
* <cite id="CITEREFDesfor1957">Desfor, Irving. 1957. "F-Stops On Cameras Discarded; Pick Number From 4 To 18". ''Arizona Republic'', September&nbsp;1.</cite>
* <cite id="CITEREFGebele1958">Gebele, Kurt. 1958. Photographic Shutter. US Patent 2,829,574, filed 2 November 1953, and issued 8 April 1958.</cite>
* <cite id="CITEREFJonesCondit1941">Jones, Loyd A., and H. R. Condit. 1941. "The Brightness Scale of Exterior Scenes and the Computation of Correct Photographic Exposure". ''Journal of the Optical Society of America'' 31:11, Nov. 1941, 651&#x2013;678.</cite>
* <cite id="CITEREFJonesCondit1948">Jones, Loyd A., and H. R. Condit. 1948. "Sunlight and skylight as determinants of Photographic exposure. I. Luminous density as determined by solar altitude and atmospheric conditions". ''Journal of the Optical Society of America'' 38:2, Feb. 1948, 123&#x2013;178.</cite>
* <cite id="CITEREFJonesCondit1949">Jones, Loyd A., and H. R. Condit. 1949. "Sunlight and skylight as determinants of Photographic exposure. II. Scene structure, directional index, photographic efficiency of daylight, safety factors, and evaluation of camera exposure". ''Journal of the Optical Society of America'' 39:2, Feb. 1949, 94&#x2013;135.</cite>
* <cite id="CITEREFRay2000">Ray, Sidney F. 2000. "Camera Exposure Determination". In ''The Manual of Photography: Photographic and Digital Imaging'', 9th ed. Ed. Ralph E. Jacobson, Sidney F. Ray, Geoffrey G. Atteridge, and Norman R. Axford. </cite><cite id="CITEREFRay2000">Oxford: Focal Press.</cite> {{ISBN|0-240-51574-9}}[[ISBN (identifier)|ISBN]]&nbsp;[[Special:BookSources/0-240-51574-9|0-240-51574-9]]
* <cite id="CITEREFRay2002">Ray, Sidney F. 2002. [https://web.archive.org/web/20070212201431/http://books.elsevier.com/us/focalbooks/us/subindex.asp?isbn=0240515404 ''Applied Photographic Optics'']. 3rd ed. </cite><cite id="CITEREFRay2002">Oxford: Focal Press.</cite> {{ISBN|0-240-51540-4}}[[ISBN (identifier)|ISBN]]&nbsp;[[Special:BookSources/0-240-51540-4|0-240-51540-4]]
* <cite id="CITEREFUlffers1968">Ulffers, D. 1968. "Sensitivity Specifications of Exposure Meters". ''British Journal of Photography'' 115, 47.</cite>

== Pranala luar ==

* Doug Kerr, [http://www.dougkerr.net/Pumpkin/articles/Setting_Exposure_Ev.pdf "Setting Camera Exposure in Terms of Ev"] ([[Portable Document Format|PDF]])
* Fred Parker, [http://www.fredparker.com/ultexp1.htm#Light%20Intensity%20Chart table of exposure values]{{Pranala mati|date=November 2022 |bot=InternetArchiveBot |fix-attempted=yes }} for various lighting situations

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