Efke IR820 and Rodinal

[Per Madsen]

I am currently testing Efke IR820.

Do any of you have development times in Rodinal 1 + 100 for the film
as a starting point ?

[vinny]

Here's 1+50. If you look at the other films on the list and compare the differences in time for 1+50 vs 100, you should have a good starting point. It's all going to vary on how your processing and what type of enlarger or scanner you're using. I'd do some tests.
http://www.digitaltruth.com/devchart.html