Shooting Provia 100 without bellows extension
This weekend, a friend of mine wanted to test his new lighting equipment. I took my 8x10 to his house to shoot some pics, but left my expo disc at home (duh!) I am fairly sure I needed some sort of bellows compensation. I was shooting Provia 100 (metered and exposed for ISO 100), with a 19 in. APO Artar lens.
My question is, should I have the lab push these sheets by a stop since I didn't compensate for bellows extension before hand (or can I do anything about it in the developing stage)?
Shooting Provia 100 without bellows extension
Will need to know the total length of the bellows used or the vertical and horizontal dimensions of the subject being photographed. I normally work off subject size, but it can be done either way.
An 8x10 subject will require 2 stop more, 16 /20 requires 1 stop for 8x10 film. This assumes a symetrical lens, not a tele or wide design which require more and less compensation than the standard formula.
Shooting Provia 100 without bellows extension
I filled most of my 8x10 gg with the head and shoulders of the people. I focused the 485 mm lens (not a tele lens) as needed. I don't have any of the measurements you mentioned. I don't often do studio shooting.
Shooting Provia 100 without bellows extension
Diane, it sounds like your subject area (head and shoulders) was close to the 16"x20" subject area R.moravec mentioned, or about 1:2, or so. If so, that would put the bellows extension compensation at close to 1 stop. Thus, your thought of doing a 1 stop push in developing might be close.
Shooting Provia 100 without bellows extension
Head and shoulder is16/20, so send in ONE sheet and do the 1 stop push. Adjust from there.