I need spectral transmission / optical density data on some Wrattens discontinued several decades ago, like Wratten ## 34, 49, 55, 57, 65 and some other ones. The KODAK PHOTOGRAPHIC FILTERS HANDBOOK, publication B-3, cited here:
(1) What publications do include that data? Where could I buy or download them?
(2) Could anybody please post at least the Wratten 34 (the one I'm intrested in most of all) filter spectral optical density (or transmission) data here?
I have the B3 book and all the filters you mention ae listed along with characteristics. Mine was published in 1973. I do not have a scanner so cannot copy the page for the 34 filter. On the transmittance graph; .1% 200 - 320Nm and 490 - 640. at 420Nm transmittance is about 72%. Over 680 greater than 65%. Hope this helps.
Many thanks Richard; that really helps! So 1973 is the key date... now I'm almost sure I'll be able to purchase the book somewhere! And the transmittance numbers you've posted are a great help, too.