i recently purchased some iso 25 and had some trouble with the recomended development time. after all was said and done i need to use d-76 straight for 13 minutes when the recomended time is 5.5-6. the tonal range and grain structure was AMAZING!!! definatly a thumbs up.
Last edited by chrisofwlp; 08-02-2006 at 10:48 PM. Click to view previous post history.
Rodinal, Beautiful film, prone to scratches
Welcome to APUG.
I see you've just recently joined. Try searching on Efke 25 with the Search box at the upper right of the page. You'll get a number of thoughts on Efke 25 that have already been posted in 455 separate threads. I'm not trying to be glib, just pointing to a resource that you might not have tried.
Have you got more specific questions?
Chris, with that amount of time, it should have been completely toasted (about 5 stops over-developed). What asa did you use? What type of light did you have? What subject matter? Can you post an image?
There are a lot of people here who use a very dilute developer (HC110, Rodinal, Pyrocat-hd) and longer times, because this film reacts so violently to over development and has such tight grain. Are you sure you didn't get the 50 or 100? tim
Try rodial stand dev 1:200 for 2 hours
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Originally Posted by noseoil
i exposed the film at iso 25, my profile pic should sufice.
Manufacturers development times are starting points and should be adjusted to yield the contrast you need for your own unique working practice and personal preference.
Originally Posted by chrisofwlp
Contrary to popular belief, some photographers find they need more development than the manufacturers recommend with certain film types.
Looks like you found a time that suits you.
[QUOTE=Keith Tapscott.]Contrary to popular belief, some photographers find they need more development than the manufacturers recommend with certain film types.[QUOTE]
The 'underdevelopment Mafia' have far too much of a stranglehold.
My STARTING point nowadays is 10% above the manufacturers' recommended times, and that's with generous exposure. This is for negs that print well on grade 2-1/2, and I'm already using contrasty (but very low flare) non-SLR lenses for Leicas, Alpas and LF.
Some Zone Puritans will immediately conclude that I am ignorant, incompetent, etc. Tough. You are absolutely spot on. Many need less: a few need more.
R. (at Plymouth College 1961-69, now in France: www.rogerandfrances.com)
Is it ok to dev tri-x in d761+1 for 14 min? tri-x is the only film i have now
All I am saying is that you should develop your film to the desired contrast that you need for your own working system. If you need more contrast, you increase the development until you get the contrast you need. If you need less contrast, you reduce it in small increments until you find your `ideal` contrast level. There is no such thing as a correct development time that suits every individuals needs or preferences, you fine-tune it suit yourself.
Originally Posted by Markok765