A while back, I posted about experimenting with some Kodak medical infrared film I bought in an auction. The film is asa 1/20 - 1/100 depending on whether I use a 25a filter. This example was a ~45 min. exposure at f/32.5. I am also experimenting with semi-stand development. It looks good to me, but there is a patch in the upper left where the neg developed more. Any ideas what would cause that?
I am pretty sure it is chemical and not a light fog. I used a jobo paper tube. I did a 3 minute prewet with agitation. Then I filled it with Rodinal 1+200, agitated it for 30 seconds, let it stand upright for 1/2 hour, agitated for 30 seconds, then let sit for another 1/2 hour. I poured out the developer and used water for a stop bath. For that and the fixer, I put the tube on the rotary base.
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