How can I guesstimate the exposure time for a collodion wet plate? Any helpful hints?
I have a lightmeter, a Sekonic 308, so I can take measurements. I know that the age of the collodion plays into the exposure time needed as well, but its a minor factor. I've done my research on the whole process of developing a collodion wet platen, but I haven't seen any recommendations or hints on the exposure time.
Is there anyway to get close to a good exposure time by some indicators? Or is it just a matter of experience and wasting a few plates until you get it right by guessing? I haven't done my first plate yet, I'm still waiting for the chemicals. I have zero personal experience with wet plate photography but I'm familiar with regular modern day DSRL photography and not a beginner in photography.