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Definition of anti-halation layer - iDigitalPhoto Dictionary
- http://www.idigitalphoto.com/dictionary/anti-halation_layer#:~:text=About%20anti-halation%20layer%20Definition%3A%20%281%29%20Light-absorbing%20coating%20applied,film%20support%20material%20back%20into%20the%20light-sensitive%20area.
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US3392021A - Photographic anti-halation layers - Google …
- https://patents.google.com/patent/US3392021A/en
- US3392021A US45855065A US3392021A US 3392021 A US3392021 A US 3392021A US 45855065 A US45855065 A US 45855065A US 3392021 A US3392021 A US 3392021A Authority US United States Prior art keywords photographic layer silver carey lea halation Prior art date 1965-05-25 Legal status (The legal status is an assumption and is not a legal conclusion.
US1879537A - Anti-halation layers for photographic …
- https://patents.google.com/patent/US1879537A/en
- Photographic materials provided with an anti-halation layer containing a dye of the fuchsone series having at least one carboxylic group in the molecule. 2. …
Anti-Halation Layer | Photo.net Photography Forums
- https://www.photo.net/discuss/threads/anti-halation-layer.452597/
- The difference in image halation between the 'AURA' and 'non-AURA' versions of Efke 820 are very subtle. This may be amenable to enhancement be covering the film pressure plate in silver foil - but I've not tried this. I believe pre-washing a film before exposure can be used to enhance it's sensitivity.
Anti-halation layers | Photrio.com Photography Forums
- https://www.photrio.com/forum/threads/anti-halation-layers.27289/
- Mar 21, 2007. #5. As I understand, the anti-halation coating helps prevent the scattering of light when the image from the lens hits the film. I just looked up the halation on dictionary.com. a blurred effect around the edges of highlight areas in a photographic image caused by reflection and scattering of light through the emulsion from the ...
Anti Halation Undercoat AHU Layer - Sensitive Layer
- https://www.tanguayphotomag.biz/sensitive-layer/antihalation-undercoat-ahu-layer.html
- Anti Halation Undercoat AHU Layer. All photographic products suffer from internal reflections and refractions once light has entered the uppermost layer. The light that is reflected or refracted is but a small percentage of the available light entering the system. A problem that causes the greatest concern is that of light reflected from the gel/base interface at the bottom …
Anti-halation layer | Photo.net Photography Forums
- https://www.photo.net/discuss/threads/anti-halation-layer.351494/
- Photo.net Photography Forums. Forums > Practice and Technique > Film and Processing > Anti-halation layer. Discussion in 'Film and Processing' started by helohe, Nov 29, 2008. ... If you can find it Lucky B&W films have no Anti-halation layer. I recently shot some though into the sun and all other ways and it turned out fine. But it may be how ...
Anti-halation | NFSA
- https://www.nfsa.gov.au/preservation/preservation-glossary/anti-halation
- Dyes or layers introduced to the film base to reduce or eliminate halation or light spreading beyond its intended area. An anti-halation layer is the light absorbing layer in raw stock that prevents reflection of light back into the light-sensitive emulsion. This prevents unwanted fogging. The base may be dyed gray.
What is Halation - The Darkroom Photo Lab
- https://thedarkroom.com/cinestill-50daylight-800tungsten-xpro-c-41-color-negative-film/what-is-halation/
- Halation is the effect that occurs when the bright areas of an image appear to softly bleed around the edges of dark areas. This is caused by light going through the emulsion layer, bouncing off the base of the film and exposing the adjacent emulsion. Some film is manufactured with a black anti-halation coating on the base side. Halation is the reflection of bright points of light off of …
Halation | definition and usage - Videocide
- https://videocide.com/glossary/halation/
- An anti-halation backing is a layer found in most photographic films, usually a coating on the back of the film base, though it is sometimes incorporated between the light-sensitive emulsion and the base. Its purpose is to absorb light that passes through the emulsion, thus preventing any light from being reflected back through the emulsion from the rear surface …
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