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EI Rating and Development?
I started using Kodak Tri X 320, but I began to expose it at E. I. 200; for smaller grain. My question is, since I overexposed the film, would I then under develop for compensation; that is, to achieve a properly developed negative? Or would I develop at the suggested 200 ISO times to get normal densities? I'm lost.
Well, I have about 23 sheets of Tri X left. I started shooting it at EI 200 from a suggestion. After looking at the Kodak development tests, it is suggested to develop the 320 ISO for 3 1/4 minutes in HC-110 Dilution B for normal development. But, in their film density tests, is shows at this development time, the density in the highlights is quite low. At six minutes development, however, the density matches that of John Sexton's earlier "normal" development tests.
3 Answers
- 1 decade agoFavorite Answer
The exposure makes no difference to the size of the visible grain. It's the developing process (along with the speed of the film) that makes your grain more or less noticeable.
Since you overexposed your images you should underdevelop your film to compensate, otherwise you'll wind up with very contrasty negatives.
Higher ISO films generally have more grain than a film with a low ISO, maybe that confused you? (Exposing at a different ISO makes no difference. Only different developing techniques can minimise grain)
Why don't you use expose the film for the correct ISO and use a diluted developer and adjust developing time accordingly.
There are special 'fine grain' developers on the market. Use that rather than playing around with ISO.
- Mere MortalLv 71 decade ago
Grain is part of the physical, built-in nature of the film you are using. Exposure will have little affect, developing only a bit more.
To attain small grain you need to shoot film that is made with small grain.
- 5 years ago
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