ItsReallyDarren
That's really me
OT...
re: Rodinal at high dilutions ... I personally feel that at 1:100, time is immaterial past a certain minimum. I develop various films (TX, TMY, APX, PANF) 1:100 @ 20 minutes, agitate for 30 seconds and then 3 inversions every 3 minutes thereafter. But I see people specifying one hour for 1:125, and other variations. At 1:100 and above, my guess is that Rodinal develops to exhaustion and agitation is the variable. I haven't tested for the minimum ("correct") dev time at this dilution, but I will.
I am willing to bet that I could eliminate all agitation but the initial 30 seconds, and the results would be the same as my "standard" agitation scheme. In fact, I did just that, and I was correct.
Next I would like to do a reasonably controlled test of 1:125 for 20 minutes and for 1 hour, both stand. I'm betting the results would be the same with the exception of the grain structure. With increased wet time, grain and sharpness might be noticeably compromised.
IOW, I suspect there is a lot of voodoo out there when it comes to Rodinal and stand development.
I've personally found Neopan 400 to be very grainy in Rodinal (1+125). I've tried cutting back the development time to 45 instead of an hour and haven't noticed a big difference in the negatives. It'll be interesting to see how 20 minutes of stand development would come out. I'll be sure to post any results when I give it a try.