Discussion of exposure needs to be "focussed" on meters, how they work, and how to use them.
The question of whether to meter using the box speed or to use a personal EI turns on two factors:
1) whether the film being used is a typical film (like Tri-X) where the ISO and the box speed are one and the same, or a film like Neopan 1600, where the "1600" refers to a speed that is applicable to some relatively special conditions, and is different from the ISO;
and 2) whether one has engaged in the procedure of testing one's metering and shooting and developing at a number of different EIs, and come to the conclusion that a particular EI works best for them.
Hi Mark:
I may not have been totally clear with respect to my comment about Neopan 1600.
I was trying to stress that the "1600" in Neopan 1600 is very different than the "400" in T-Max 400, because 1600 is not the ISO speed for the film, but rather an EI that can be used when light conditions suggest under-exposure and "push" development. For that reason, I don't think it a good idea to use one's experience with Neopan 1600 (or the 3200 films) to determine how best to determine an EI for another film.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?