How to estimate exposure times?

ac12

Member
Joined
Apr 27, 2010
Messages
720
Location
SF Bay Area (SFO), USA
Format
Multi Format

Same as with your camera:
4 sec @ f16
8 sec @ f22
16 sec @ f32

f32 is kinda small, so you might look into changing the bulb in your enlarger to a smaller wattage bulb. That is what I had to do with my enlarger. It came with a 150w bulb, but the exposures were too short, so I went down to a 75w bulb. I only stopped at 75w because they don't have a smaller wattage bulb.

PS, I like using the projection print scale (PPS) better than a test strip. Because I can put the PPS just where I want it, the test strip covers a much large area of the image. But as was mentioned, that just gets you close. Once you make a print and evaluate it, then you have to "fine tune" the exposure to what you want it to look like.
 
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