A 'Reminder' for FILM USERS ---
Posted 10/03/2021 - 09:49
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Some good advice for anyone using film, especially keeping it cold. I keep shot film in the fridge until I'm ready to develop it.
Pentax hybrid user - Digital K3, film 645 and 35mm SLR and Pentax (&other) lenses adapted to Fuji X and Panasonic L digital
Fan of DA limited and old manual lenses
Fan of DA limited and old manual lenses
Posted 10/03/2021 - 09:53
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Great information there Peter. I may pm you as I have some rolls been sitting around awaiting development. 🙄🙈
Thanks
Thanks
Posted 10/03/2021 - 11:06
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AL -- Yes -- Replied YES ! ands I'm CHEEEEPER than anywhere else as I make up my own ID11 /D76 etc formulae and can give OLD FILMS the extra development they need IF you tell me they have been 'sitting around for a few years' whereas a LAB will give only 'Standard Development'
PS -- PRICE quoted £2-50 is ONLY FOR TRADITIONAL Films NOT C41 types.
PS -- PRICE quoted £2-50 is ONLY FOR TRADITIONAL Films NOT C41 types.
Been a member of Pentax Club since the Ron Spillman era! Got COMPUTERISED at last - DIGITISED?
Taken the PLUNGE - BUT FILM STILL RULES !!!
Taken the PLUNGE - BUT FILM STILL RULES !!!
Posted 12/03/2021 - 11:13
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Way back in the 1960s I worked in the Colour Testing Department at Ilford Films. One of the tests that we undertook with exposed film was the amount of image decay after 28 days, this being the point at which the silver halide would start to deteriorate. On the whole, a period of 1 to 3 months from first exposure to last was normally acceptable, after which image quality would very slowly decline. On this basis, I would suggest that your HP5 should have no more than 9 months to a year before serious regression would occur. I hope this helps
Michael
Michael
Posted 12/03/2021 - 18:02
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Good to know Peter, might take you up on that next time...
Posted 12/03/2021 - 18:34
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MHOL190246 wrote:
Way back in the 1960s I worked in the Colour Testing Department at Ilford Films. One of the tests that we undertook with exposed film was the amount of image decay after 28 days, this being the point at which the silver halide would start to deteriorate. On the whole, a period of 1 to 3 months from first exposure to last was normally acceptable, after which image quality would very slowly decline. On this basis, I would suggest that your HP5 should have no more than 9 months to a year before serious regression would occur. I hope this helps
Michael
Way back in the 1960s I worked in the Colour Testing Department at Ilford Films. One of the tests that we undertook with exposed film was the amount of image decay after 28 days, this being the point at which the silver halide would start to deteriorate. On the whole, a period of 1 to 3 months from first exposure to last was normally acceptable, after which image quality would very slowly decline. On this basis, I would suggest that your HP5 should have no more than 9 months to a year before serious regression would occur. I hope this helps
Michael
Thank you Michael! I am glad to receive "inside advice" from Ilford films I have probably never had Ilford HP5 (or any other Ilford films) in my cameras for more than six months at the most. In the future I will try to shoot HP5 more often, thus keeping the film in the camera for only a few months maximum.
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910 posts
20 years
Brentwood Essex (UK)
1. Please Cold Store your films in a Fridge until you want to use them -- packs of 10 can go in the FREEZER even
2. Please do not leave films in Cameras un-developed for years -- here is the effect known as 'Latent Image Regression' where the atoms of Silver Halides exposed to 'Photons of LIGHT' as a snap is taken 'Decay' and the Silver Grain can no longer be formed by the Developing Agents.
3. if your film is 'Outdated' you must give it MORE EXPOSURE as the Sensitivity declines over years.
4. Colour negative, slide or B&W 'Chromogenic' films suffer from exposure to 'Fumes' in a house over years-- can be from Sprays, Furniture Glue etc etc which will cause 'Greening', a High Fog Level and Loss of Image Density -- so 'Careful Storage ' please !
Attached image example of XP2 400 Super 'GREENED'
Taken the PLUNGE - BUT FILM STILL RULES !!!