A friend just gave me three Spectra Color Contrast and Panchromatic
From their website I gather
One is dark and looks like an ND.09 - They say that is to judge the films compression of light values and to check hot spots and shadow detail @250 ASA and up
One is lighter... that is to check a situation that is @ASA250 and below.
One is Panchromatic and has a yellow cast to check if tonal values will blend together for black and white.
So are these used much?
I do see the benefit of the Panchromatic filter for quick reference to color combinations and contrast as far as black and white photography goes.... how about the others?
Any help and thought on their use would be appreciated.
Spectra Color Contrast and Panchromatic
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