Originally posted by tuco Curious, how do you know what developer his lab used?
I don't know which developer, but the times specified for rr80s for any developer are too long according to post by people from various sources.
For me the times in Rodinal and Xtol (replenished) were both too long. The xtol times
My xtol replenished times are usually between 1:1 and 1:2 mix on the official xtol data.
Here's the official data for rr80s
Rollei RETRO 80S TWIN 2x 135-36
Massive dev chart:
B&W Film Developing Times | The Massive Dev Chart
Similar data for 1:1 and 1:2 mixes.
From my experimenting I've arrived at my mix being 7min at 20C (I use 1:2 times for other films). That's 36% shorter time, even if I go by 1:1 times, that's 18% shorter times.
The photos look like the results I used to get with the official times.
Here's couple with my photos with the shorter dev time (i've posted them before):