[pure-silver] Re: estimating filter factor: gray card?

  • From: Peter De Smidt <pdesmidt@xxxxxxx>
  • To: pure-silver@xxxxxxxxxxxxx
  • Date: Sat, 30 Sep 2006 09:35:27 -0700

If you're going to use colored filters regularly, you might run some tests photographing a MacBeth Color Checker, or something similar. Not only will colors be attenuated at different rates, but the actual contrast of the black to white squares will be affected by filters, as David Kachel pointed out a number of years ago.
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