MarcW
Hello,
I’d like to use the EFKE IR 820 with my pinhole camera, along with the Brenner gelatin IR filter. I estimate that the latter has a density somewhere between my RG695 and an R29 dark red filter.
Before I have to carry out lots of tests, I was hoping you could give me a few guidelines for:
1. At what speed behind the filter should I start my exposure series – 1.5 ASA? 3 ASA? 6?
2. Does anyone have any experience regarding the black-body behaviour of the EFKE IR 820?
Thanks and best regards
Marc
