You do not have permission to edit this page, for the following reasons:

This IP address has been blocked from editing Wikipedia.
This does not affect your ability to read Wikipedia pages.
Most people who see this message have done nothing wrong. Some kinds of blocks restrict editing from specific service providers or telecom companies in response to recent abuse or vandalism, and can sometimes affect other users who are unrelated to that abuse. Review the information below for assistance if you do not believe that you have done anything wrong.

The IP address or range 35.170.0.0/16 has been blocked (disabled) by ‪JJMC89‬ for the following reason(s):

The IP address that you are currently using has been blocked because it is believed to be a web host provider or colocation provider. To prevent abuse, web hosts and colocation providers may be blocked from editing Wikipedia.
You will not be able to edit Wikipedia using a web host or colocation provider because it hides your IP address, much like a proxy or VPN.
We recommend that you attempt to use another connection to edit. For example, if you use a proxy or VPN to connect to the internet, turn it off when editing Wikipedia. If you edit using a mobile connection, try using a Wi-Fi connection, and vice versa. If you are using a corporate internet connection, switch to a different Wi-Fi network. If you have a Wikipedia account, please log in.
If you do not have any other way to edit Wikipedia, you will need to request an IP block exemption.

How to appeal if you are confident that your connection does not use a colocation provider's IP address:
If you are confident that you are not using a web host, you may appeal this block by adding the following text on your talk page: ((unblock|reason=Caught by a colocation web host block but this host or IP is not a web host. My IP address is _______. Place any further information here. ~~~~)). You must fill in the blank with your IP address for this block to be investigated. Your IP address can be determined here. Alternatively, if you wish to keep your IP address private you can use the unblock ticket request system. There are several reasons you might be editing using the IP address of a web host or colocation provider (such as if you are using VPN software or a business network); please use this method of appeal only if you think your IP address is in fact not a web host or colocation provider.

Administrators: The IP block exemption user right should only be applied to allow users to edit using web host in exceptional circumstances, and requests should usually be directed to the functionaries team via email. If you intend to give the IPBE user right, a CheckUser needs to take a look at the account. This can be requested most easily at SPI Quick Checkuser Requests. Unblocking an IP or IP range with this template is highly discouraged without at least contacting the blocking administrator.

This block will expire on 05:20, 2 July 2025.

Even when blocked, you will usually still be able to edit your user talk page, as well as email administrators and other editors.

For information on how to proceed, please read the FAQ for blocked users and the guideline on block appeals. The guide to appealing blocks may also be helpful.

Other useful links: Blocking policy · Help:I have been blocked
Your IP address is in a range that has been blocked on all Wikimedia Foundation wikis. The block was made by ‪Jon Kolbert‬. The reason given is Open proxy/Webhost: See the help page if you are affected .
- Start of block: 05:38, 21 February 2024
- Expiry of block: 05:38, 21 February 2029
Your current IP address is 35.170.198.190. The blocked range is 35.170.0.0/16. Please include all above details in any queries you make. If you believe you were blocked by mistake, you can find additional information and instructions in the No open proxies global policy. Otherwise, to discuss the block please post a request for review on Meta-Wiki. You could also send an email to the stewards VRT queue at stewards@wikimedia.org including all above details.

You can view and copy the source of this page:

((Short description|Chemical effect))
((more references|date=December 2018))
[[File:Bleach bypass Example Greg Keene crop.jpg|thumb|upright=1.1|Example of a bleach bypass emulated photograph]]
((Alternative photography))
'''<span lang="en" dir="ltr">Bleach</span> bypass''', also known as '''skip bleach''' or '''silver retention''', is a chemical effect which entails either the partial or complete skipping of the [[bleach]]ing function during the [[Film developing|processing]] of a color film. By doing this, the [[silver]] is retained in the emulsion along with the color dyes. The result is a black-and-white image over a color image. The images usually have reduced [[saturation (color theory)|saturation]] and [[exposure latitude]], along with increased [[contrast (vision)|contrast]] and graininess.<ref>((Cite web|title=Chapter 2. Bleach Bypass Looks - Color Correction Look Book: Creative Grading Techniques for Film and Video [Book]|url=https://www.oreilly.com/library/view/color-correction-look/9780133818482/ch02.html|access-date=2021-03-21|website=www.oreilly.com|language=en))</ref> It usually is used to maximum effect in conjunction with a [[F-number|one-stop]] underexposure.

== Technique ==
Bleach bypass can be done to any photochemical step in the process, be it [[original camera negative]], [[interpositive]], [[internegative]] or [[release print]]. For motion pictures, it is usually applied at the internegative stage, as insurance companies usually are reluctant to have the camera negative bleach bypassed, or the interpositive (a "protection"/"preservation" element), in the event that the look is agreed to be too extreme, and the cost of the process for each individual release print is most often cost-prohibitive. The effect, however, will render slightly differently at each stage, especially between the camera negative and interpositive stages.

Bleach bypass generally refers to a complete circumvention of the bleach stage of development, and is the most commonly offered service among laboratories. [[Technicolor]]'s '''ENR''' and '''OZ''' and [[Deluxe Entertainment Services Group|Deluxe Labs]]' '''ACE''' and '''CCE''' processes are proprietary variants which allow the film to be only partially bleached, giving the [[cinematographer]] a more finely tuned control over the effect rendered by the process.

While originally a laboratory technique, a similar effect can also be achieved digitally through [[digital intermediate]] [[color grading]].

== Use in film and television ==
<!-- Image with inadequate rationale removed: [[Image:Minority Report bleached.jpg|thumb|250px|right|Still from the 2002 film ''[[Minority Report (film)|Minority Report]]'', which used the bleach bypass technique.]] -->
"Bleach bypass", as used in this context, was first used in [[Kon Ichikawa]]'s film ''[[Her Brother]]'' (1960). [[Kazuo Miyagawa]], as [[Daiei Film]]'s cameraman, invented bleach bypass for Ichikawa's film,<ref>((cite web | url=https://www.moma.org/calendar/exhibitions/4955| title=Kazuo Miyagawa: Japan's Greatest Cinematographer|work=Museum of Modern Art|date=April 12–29, 2018|access-date=May 14, 2019))</ref><ref>((cite web |url=http://www.nikkansports.com/jinji/1999/seikyo990808.html |script-title=ja:日刊スポーツ・訃報・宮川一夫氏 |language=ja |access-date=April 20, 2008|url-status=dead |archive-url=https://web.archive.org/web/20071114174517/http://www.nikkansports.com/jinji/1999/seikyo990808.html |archive-date=November 14, 2007))</ref><ref>((cite web|url=http://www.tokyolab.co.jp/50th/05.html |title=東京現像所：the 50th Anniversary：TOGENの歴史 |language=ja |access-date=April 20, 2008|archive-url=https://web.archive.org/web/20071114163558/http://www.tokyolab.co.jp/50th/05.html |archive-date=November 14, 2007|url-status=dead ))</ref> inspired by the color rendition in the original release of ''[[Moby Dick (1956 film)|Moby-Dick]]'' (1956), printed using dye-transfer [[Technicolor]], and was achieved through the use of an additional black-and-white overlay. Actually, this is a throw-back to pre-1944 Technicolor, which incorporated a silver-containing "blank receiver" with the silver image printed from the green separation negative, but at 50% density, upon which the color dyes were imprinted by utilizing "imbibition"; this concept may have been employed here, but at a different density.

Despite this early foray into the technique, it remained overlooked for the most part until its use by [[Roger Deakins]] for the movie ''[[Nineteen Eighty-Four (1984 film)|Nineteen Eighty-Four]]''.

The effect has subsequently become a regular development tool in laboratory work, and has remained in widespread use. Practitioners include cinematographers [[Rodrigo Prieto]], [[Remi Adefarasin]], [[Darius Khondji]], [[Dariusz Wolski]], [[Walter Carvalho]],  [[Oliver Stapleton]], [[Newton Thomas Sigel]], [[Park Gok-ji]], [[Shane Hurlbut]], [[Steven Soderbergh]] (as "Peter Andrews"), [[Tom Stern (cinematographer)|Tom Stern]], [[Vittorio Storaro]], and [[Janusz Kamiński]] (notably on [[Steven Spielberg]]'s ''[[Saving Private Ryan]]''<ref>((cite web | access-date=September 8, 2008| url=http://www.sproe.com/s/spr-4.html | title=Combat Footage | publisher=Saving Private Ryan Online Encyclopedia))</ref> and ''[[Minority Report (film)|Minority Report]]'').

== References ==
((reflist))

== External links ==
((Commons category|Bleach bypass))
* [http://www.theasc.com/magazine/nov98/soupdujour/pg3.htm "Soup du Jour: Bleach Bypass", American Cinematographer, November 1998.]

((Photography))
[[Category:Cinematic techniques]]

Pages transcluded onto the current version of this page (help):

Bleach bypass (edit)
Template:Alternative photography (edit)
Template:Ambox (view source) (template editor protected)
Template:Cite web (view source) (protected)
Template:Commons category (view source) (template editor protected)
Template:Find sources mainspace (view source) (template editor protected)
Template:Hlist/styles.css (view source) (protected)
Template:Icon (view source) (template editor protected)
Template:Main other (view source) (protected)
Template:More citations needed (view source) (template editor protected)
Template:More references (view source) (extended confirmed protected)
Template:Navbox (view source) (template editor protected)
Template:Pagetype (view source) (protected)
Template:Photography (view source) (semi-protected)
Template:Plainlist/styles.css (view source) (protected)
Template:Reflist (view source) (protected)
Template:Reflist/styles.css (view source) (protected)
Template:Replace (view source) (protected)
Template:SDcat (view source) (protected)
Template:Short description (view source) (protected)
Template:Short description/lowercasecheck (view source) (protected)
Template:Side box (view source) (template editor protected)
Template:Sidebar (view source) (template editor protected)
Template:Sister project (view source) (template editor protected)
Module:Arguments (view source) (protected)
Module:Category handler (view source) (protected)
Module:Category handler/blacklist (view source) (protected)
Module:Category handler/config (view source) (protected)
Module:Category handler/data (view source) (protected)
Module:Category handler/shared (view source) (protected)
Module:Check for unknown parameters (view source) (protected)
Module:Citation/CS1 (view source) (protected)
Module:Citation/CS1/COinS (view source) (protected)
Module:Citation/CS1/Configuration (view source) (protected)
Module:Citation/CS1/Date validation (view source) (protected)
Module:Citation/CS1/Identifiers (view source) (protected)
Module:Citation/CS1/Utilities (view source) (protected)
Module:Citation/CS1/Whitelist (view source) (protected)
Module:Citation/CS1/styles.css (view source) (protected)
Module:Disambiguation/templates (view source) (protected)
Module:Find sources (view source) (template editor protected)
Module:Find sources/config (view source) (template editor protected)
Module:Find sources/links (view source) (template editor protected)
Module:Find sources/templates/Find sources mainspace (view source) (template editor protected)
Module:Icon (view source) (template editor protected)
Module:Icon/data (view source) (template editor protected)
Module:Message box (view source) (protected)
Module:Message box/ambox.css (view source) (protected)
Module:Message box/configuration (view source) (protected)
Module:Namespace detect/config (view source) (protected)
Module:Namespace detect/data (view source) (protected)
Module:Navbar (view source) (protected)
Module:Navbar/configuration (view source) (protected)
Module:Navbar/styles.css (view source) (protected)
Module:Navbox (view source) (template editor protected)
Module:Navbox/configuration (view source) (template editor protected)
Module:Navbox/styles.css (view source) (template editor protected)
Module:Pagetype (view source) (protected)
Module:Pagetype/config (view source) (protected)
Module:Pagetype/disambiguation (view source) (protected)
Module:Pagetype/setindex (view source) (protected)
Module:Pagetype/softredirect (view source) (protected)
Module:SDcat (view source) (protected)
Module:Side box (view source) (template editor protected)
Module:Side box/styles.css (view source) (template editor protected)
Module:Sidebar (view source) (template editor protected)
Module:Sidebar/configuration (view source) (template editor protected)
Module:Sidebar/styles.css (view source) (template editor protected)
Module:String (view source) (protected)
Module:Unsubst (view source) (protected)
Module:WikidataIB (view source) (template editor protected)
Module:WikidataIB/nolinks (view source) (template editor protected)
Module:WikidataIB/titleformats (view source) (template editor protected)
Module:Wikitext Parsing (view source) (protected)
Module:Yesno (view source) (protected)

Return to Bleach bypass.

Retrieved from "https://en.wikipedia.org/wiki/Bleach_bypass"