Film Kodal Gold 200 C41 11 minutes @ 20C
Altered recipe, added phenidone from 1:100 vs ascorbic acid to 1:40
Upped the phenidone from the previous amount and adjusted the development time accordingly (to what was said to be the activity)
Development time based on a baseline for std. B/W film 6,5 minutes (said to be comparable to D-76 at this concentration of Phenidone)
Compensated for C41 film (ca 25% longer time, and a 6,5% longer time per film through the developer)
6,5 minutes x 1.25 x 1 x 1.065 x 1.065 x 1.065 for a total of 9,8 minutes @ 20 centigrade.
Since we've had many films through the developer already, I added 1 minute to be on the safe side.
Kanon Gold 200 extra phenidone added, straight scan
Exposed at boxspeed, -1 step and + 1 step
Exposed at box speed, straight scan
Box speed postprocessed 1 step
Exposed at - 1 step, straight scan
Exposed at - 1 step, postprocessed.
Exposed at + 1 step, straight scan
Exposed at + 1 step, postprocessed.
Exposed at boxspeed, -1 step and + 1 step
Exposed at box speed, straight scan
Box speed postprocessed 1 step
Exposed at - 1 step, straight scan
Exposed at - 1 step, postprocessed
Exposed at + 1 step, straight scan
Exposed at + 1 step, postprocessed
The recipe will be adjusted with a little KBr, but as reported by Trond 0.5 gram /litre was to much so we'll try with less.
Also what remains to be proven is how many films can safely be processed in a litre, we're now at 4 films, with a 2 gram / litre ascorbic acid / 1:40 Phenidone mix, so more films will be processed.
Erik, 0.5g KBr/L was great. The reason for my lousy results was simply that the developer was exhausted and I didn't realize that. When I added 2 g ascorbic acid, the activity was back without any negative effects of the KBr, so too much KBr wasn't the culprit here.
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