I don't post here much. Been very slowly getting back into a film hobby, now that I no longer shoot commercially. I'm having an issue I haven't yet solved. Appreciate opinions on what appears to be uneven development, or could be an issue with a light leak on a film back on one roll, and I don't know on the other one wth the single streak.
Developed one roll with no issues as described below.
A day later developed 2 rolls of fresh trix 120 on separate jobo spools, same batch. Rotary process in a jobo tank, my own motor base w/adjustable speed and direction. 5 minutes 15 seconds, Clayton F60 1:9 500ml. This is enough coverage and capacity. 54rpm, reversed every 5 seconds for first minute, then every 10 seconds for remainder. Fixer was rotary as well, a bit longer (10 mins, as it's close to end of life). Presoak of one - two minutes. Each roll shot on a different camera.
First attached image: frame number 2, from a Pentax 67. I've pulled the curves down to better show the mark in the sky. No other frame on this roll has a mark like this. Second, the strip, first 3 frames (1,2,3), from an RZ67, the rest of the frames are fine. These were all overexposed aprox +1 - +1.5 stops, again curves pulled down to better show the marks.
My film is tightly spooled, stored out of bright light, and these were freshly shot. Loaded in a changing bag (old) at night. I've shot and processed my own film since 1989.
Developed one roll with no issues as described below.
A day later developed 2 rolls of fresh trix 120 on separate jobo spools, same batch. Rotary process in a jobo tank, my own motor base w/adjustable speed and direction. 5 minutes 15 seconds, Clayton F60 1:9 500ml. This is enough coverage and capacity. 54rpm, reversed every 5 seconds for first minute, then every 10 seconds for remainder. Fixer was rotary as well, a bit longer (10 mins, as it's close to end of life). Presoak of one - two minutes. Each roll shot on a different camera.
First attached image: frame number 2, from a Pentax 67. I've pulled the curves down to better show the mark in the sky. No other frame on this roll has a mark like this. Second, the strip, first 3 frames (1,2,3), from an RZ67, the rest of the frames are fine. These were all overexposed aprox +1 - +1.5 stops, again curves pulled down to better show the marks.
My film is tightly spooled, stored out of bright light, and these were freshly shot. Loaded in a changing bag (old) at night. I've shot and processed my own film since 1989.