Thanks for this. I like Rodinal very much with Tri-X and it was interesting to gain a better understanding of its unique properties. I pretty much stick to 1+50 dilution and the higher dilutions listed intrigue me. They recommend significantly shorter times, e.g., 8-10 minutes versus 13 minutes for 1+50 with Tri-X. I like my shadow detail and tolerate some blown highlights I get in contrasty situations with 13 minutes but want to test their recommended times -- also, the agitation they recommend is a bit different from what I use (1 minute then 10 sec every minute versus 30 seconds then 5 secs every half minute).