A bunch of shots on expired Fuji NPS 160. It took weeks to flatten out the negatives. I'm not sure which part of funky colors are down the age or my chemicals. Mamiya 645 Super.
Roll 171: HP5+ in Rodinal 1+60, 20 minutes with continuous agitation in a Simma Sine Wave roller. I get ISO400 as I had hoped. Another roll with actual subjects was exposed earlier today with my new to me Isolette II, and I should have it developed next weekend.
theHUN wrote:
Roll 171: HP5+ in Rodinal 1+60, 20 minutes with continuous agitation in a Simma Sine Wave roller. I get ISO400 as I had hoped. Another roll with actual subjects was exposed earlier today with my new to me Isolette II, and I should have it developed next weekend.
Box speed with Rodinal! Is it the dilution or the continuous that makes the difference? I have a roll of TMax 100 in the M4-2 at the moment and was planning on exposing it at ISO 50 and using Rodinal but would like to use it at box speed.
madNbad wrote:
Box speed with Rodinal! Is it the dilution or the continuous that makes the difference? I have a roll of TMax 100 in the M4-2 at the moment and was planning on exposing it at ISO 50 and using Rodinal but would like to use it at box speed.
I don't know for sure. I have gotten box speed for HP5 with "regular" developing (4 inversions at the start of every minute) at the same dilution. But "regular" developing only gives me half box speed for Acros, FP4, Delta 100, and Delta 400. So for the moment I would say that HP5 is the odd one out. Why? *shrugs*
Have you noticed an unwanted/unpleasant effects from the curved film plane? I have an Ondu pinhole and the vignetting at 6x12 is quite severe, so I have experimented with center filters, but there are a bunch of other distortions that the center filter will not fix, so I am super curious about a curved film plane pinhole camera.
theHUN wrote:
I don't know for sure. I have gotten box speed for HP5 with "regular" developing (4 inversions at the start of every minute) at the same dilution. But "regular" developing only gives me half box speed for Acros, FP4, Delta 100, and Delta 400. So for the moment I would say that HP5 is the odd one out. Why? *shrugs*
Thanks. I'll wait until there's HP5 in the camera.
theHUN wrote:
Have you noticed an unwanted/unpleasant effects from the curved film plane? I have an Ondu pinhole and the vignetting at 6x12 is quite severe, so I have experimented with center filters, but there are a bunch of other distortions that the center filter will not fix, so I am super curious about a curved film plane pinhole camera.
The wider Reality So Subtle pinhole cameras use a curved film plane; check out their 6x12 and 6x17 models, which were recently redesigned for easier loading.
theHUN wrote:
Have you noticed an unwanted/unpleasant effects from the curved film plane? I have an Ondu pinhole and the vignetting at 6x12 is quite severe, so I have experimented with center filters, but there are a bunch of other distortions that the center filter will not fix, so I am super curious about a curved film plane pinhole camera.
The curved film plane affects horizontal lines, making them more curved the farther they are from the center. I don't find the effect too objectionable on 6x6, I might on the wider pano formats though.
This frame is a good example, in reality all the horizontal lines in this are parallel. You can see some slight curvature closer to the center, while the handrail at the bottom displays even more.
jay w wrote:
the Hun, Are you using a step wedge? I don't recognize the format if you're exposing in camera.
I am using a 16S back for my Hasselblad which shoots ~40x40 mm squares. I had bought the back thinking that 16 = 645, without realizing that 16S is only 40x40. Fortunately, I only use this back for film curve tests, so 40x40 is fine.
