Re: Controlling light and dark in ambrotypes.
Date: June 19, 2012 12:18PM
If I am reading this right, you are getting a really dark image. If that is the case I would say that you should double your exposure, or ever go to 4 seconds. Over exposure will be lighter, that is more white.
A little more information would help assess the issue:
what f/ are you using, in bright sun at f/32 I'm using 3-4 second exposures.
how long are you developing, I average 15-20 seconds.
What is your developer? I use 5Ml alcohol, 100 Ml vinagar, and 3g iron sulfide.
(as an aside, I ran out of acetic acid, so I'm using vinagar which is 5% acetic, lowered the iron from 4g to 3g to compensate, it works OK)
Hope this helps,