View Full Version : Film areas?
Calamity Jane
19-Sep-2005, 18:55
Somewhere I saw a chart that gave equivalent areas for different film formats but I can't seem to find it again.
Some chemical data sheets give life in 36/35mm, 120 films but don't mention large formats.
Anybody got a link to that chart?
Thanks crew!
David A. Goldfarb
19-Sep-2005, 19:16
You mean for the purpose of determining developer life?
Just think about it--a roll of 35mm or 120 contact prints to about 8x10" or 80 square inches, same as a sheet of 8x10", 4 sheets of 4x5", close enough to two sheets of 5x7" for government work, half a roll of 220, half a sheet of 11x14", a quarter of 16x20", etc.
Calamity Jane
20-Sep-2005, 03:53
Thanks David! I don't even have a roll of 35mm in the house anymore and I haven't shot one in over 25 years so I don't remember how long a 36 exp. is ;-)
Yes, it's ID-11 that gives life as 10 rolls of 36 exp. 35mm and I was trying to figure out how many 4x5's and 8x10's that would be.
I did see a little chart somewhere online. Next time I run across it, I'll print it off for my darkroom notebook.
Thanks again.
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