Running a test with my new ORTHOTOPOSCOPE SS camera (6×12) and a non optimized pinhole of around F70 (optimized is around F130 for the 25mm focal length). I am looking at the following films with EI from approx 100-1600 all in developers I have found that works best for maximum compensation and best overall tonality with each specific film. Reciprocity corrections were kept to just a gerous doubling to time— with this type of camera and work I like to keep it simple if possible. Exposures ranged from 1 second to 30 seconds all handheld as that is my standard way of shooting with a pinhole system.
400TX • Diafine
400Tmax • 510 Pyro
Delta 3200 • 510 Pyro
Fuji 400CN • C41
Portra 400 • C41
CineStill 800T • C41
All test results will be converted to B&W as that is my current need with these materials.
UPDATE: So I’ve looked at the film and I am very drawn to the Porta 400 and VERY drawn to the Cinestill 800T when both are converted to B&W. The regular B&W film was amazing but due to the pinhole capture I had a lot more range of possibilities in the conversion process that really helped to bring out crazy tonal separation in the two color negative materials.
So I am heading back to Paris tomorrow provided I can make it to Boston to get my flight!
On my last trip to Paris 5 weeks ago I shot with the Leica Monochrome exclusively…. on this trip it will be my Leica M4 film cameras exclusively! Hint… my next big article here on FR.
I have also been testing a lot of film and developer combinations the last 5 weeks… a lot! I really like the Bergger BRF 400+ in Caffenol CL and Caffenol CH with EI in CL out to 3200+. Rodinal provides a very crisp negative and Xtol is another good choice at 1:1. Another film I have been testing a lot is Delta 3200 processed in PMK double strength… nice range of tones and usable out to 6400 and perhaps 12,800 with proper shadow metering. Today I am running a test looking at the Delta 3200 in PMK with 1.5 strength as at double the highlights get a bit hot at lower EI’s… I want it all- 400-6400!!!!!! Stay tuned!
Oh and the Bergger BRF400+ in PMK is around 200-400 with a beautiful tonal quality. I have heard many people compare the Bergger to Tri-X… Yes, but only if you are talking Tri-X from the 1970’s and even then it is more like XX than TX. It is very low contrast film which is a good thing for scanning and has a softer rendering then most modern films… perfect for a classic look. In Diafine it is nice but the grain needs a bit of a kick in PS with some structure and a “S” curve to add depth- in Diafine a usable EI of 1600 is not a problem.
So currently in my JOBO CPP2 I am running Diafine full strength Part A and full strength Part B for 5 minutes for all BW films at rotation setting “F” which is around 40 rpm. After part B I increase the rotation to “P” which is around 80 rpm and keep it at that for the remainder of the process. My tests have shown that times around 7+ minutes in A/B can stain some films- yet 5 minutes in A/B at 75F seems about spot on to me and perfect for most scanning applications. The 1:1 development of Diafine decreases the shadow detail at higher EI… for example at 1:1 TX dies after about EI 800 whereas with the full strength process as outlined above EI 1600+ is very solid (note: box speed at 1:1 is about perfect- for box speed). With regards to streaking…. none, full strength or 1:1. An obvious advantage to full strength is that Diafine can be used over and over again for a lot of film where as the 1:1 is a one shot developer. I have personally used Diafine (1 gal A/B) full strength for well over a year without issue…. if it becomes a bit dirty just run it through a new clean coffee filter and presto! Perfect developer ready for more film.