Hello @relistan, some of the development times listed for PC-512 Borax would be a bit short for hot weather.
Did you ever try it half strength 1+1 with a time increase about 1.25 to 1.3x longer from results with other developers? Just trying to get a time multiplier for 1+1 compared to 1+0.
For the case where development temperature is high, I tried developing at half strength (49 Borax soln + 1 PC-512 +50 water). Half strength in this case is not the same as 1:100 ( 99 Borax soln +1 PC-512 ).
An increase in development time of about 80% compared to that for normal PC-512 Borax was found to give a negative density closely matching.
On A3 inkjet prints the grain from both was not detectably different, and fine.
The half strength solution result gave the half strength solution as slightly sharper in this single test.
Above results were for FP4 type 517 cine film used in the test.
At 25 C the time for FP4+ is increased from 4m14s with PC-512 Borax to 7m 38s using the half strength solution.
Massive Dev Chart Film Development, Film Developing Database
www.digitaltruth.com
Long time watcher of this thread. I had sworn off Silver Bullets; long time user of D-76 1+1. But I was convinced by the positive evaluations. Prepared some PC-512 and developed a short series of pictures. FP4, Contaflex SuperBC, yellow filter. Dev 6'15" @ 22°C (from 7' @ 20°C per Ilford compensation chart).
Taking the film out of the PhotoFlo, I was already impressed by the low fog, the detailed shadows, and the tone separation. Nice negative! Please define? You know when you see oneAnd after scanning, good resolution and almost no grain (although grain is not at the top of my priorities). Tonality looks all right, although a more qualified statement will wait for enlarger prints.
@relistan : Well done!
LS-2000 scan, just black and white points, no USM.
View attachment 401576
100% crop @ 2700dpi :
View attachment 401577
On a hot day, FP4 cine film was developed in half strength PC-512 Borax, 1 PC-512+49 Borax +50 water. The time calculated for 20C , 7min x 1.8 =12.6min was adjusted for temperature.
I have found that using the multiplier of 1.8 times also works to convert the time from full strength to half strength PC-512 Borax with HP5+.
Please go ahead, it should give good ballpark figures.Mind if I add info to the data page about developing this way and add this and your other time?
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