Steve Goldstein
Subscriber
It's been a long time since I've shot much color (Kodachrome, 1970s mainly) but I have in mind a project and quite a bit of Provia and Astia in the freezer so have lately been doing some reading and research. A couple of charts in the B+W Filter Handbook caught my eye. The first one shows that B+W's KR1.5 and 81A filters appear to have nearly identical spectral characteristics, with only a slight difference in the red. This suggests I can use the KR1.5 I happen to have and not worry about purchasing an 81A.
A second chart on the same page of that booklet shows a "Skylight KR1.5" with a slightly different transmission curve from the KR1.5 curve in the first chart. That's a bit puzzling.
Comments?
A second chart on the same page of that booklet shows a "Skylight KR1.5" with a slightly different transmission curve from the KR1.5 curve in the first chart. That's a bit puzzling.
Comments?