Quote Originally Posted by Lee L View Post
This is an overlay of the sensitivity curve of Ilford MG-IV with the amber LED emission spectrum (the blue curve) I've been using with that paper. The horizontal wavelength scale is matched. No attempt was made to correlate the vertical intensity/sensitivity scales. You can see that the paper sensitivity is rapidly heading toward zero as it approaches the output of the LED. You should, of course, test.
Lee
Hi Lee,
unfortunately we can deduce nothing at all from that graph. You state the reason why yourself "No attempt was made to correlate the vertical intensity/sensitivity scales" in fact to make matters worse, one scale is linear the other log and they are different units!

The best thing to do as you say is to test !!

regards
Peter