|Test stips at twenty and ten|
The results are in! This has turned out to be one of the most exasperating tests to date. There have been problems all along the way from getting the exposures right to developing the film. Having said that there have been some surprises.
As with the Agfa test the film was exposed at box speed ISO 100 in the Nikon F5. This is where the process changes apart from the test method. The PMK Pyro used was one I made from raw material that did not include EDTA disodium in the mix and a reduced amount of Sodium Metaborate in solution B.
Sequence of development:
● Pre-soak - it makes no difference with this film. It is not prone to air bell/bubbles sticking to the film.
● Developer - to be made up immediately before use at 21 degrees C.
● Development times - for this test were 5, 10, and 20 minutes respectively.
● Tank inversions - continuously for the first minute and then once every fifteen seconds.
● Stop, Fix and wash - as normal.
● After bath - was not used and would have made little difference with this mix.
Adox CHS 100 PET 35mm is not like other black and white film it has a noticeable thinner film base which is coloured blue. The cassette this film came in was not light tight which almost ruined the test. I only discovered this after the film had been exposed, when removing the film from the cassette it fell to bits. I have read a forum thread saying that the 120 roll film has the same problem. Adox you need to up your game! It is appalling quality control.
If you use a pre-soak the water will come out blue.
The ten minute development time is the one suggested by Digital truth, which made it the reference time the other test strips were to be judged against.
|All the test strips including the one thats a no show.|
|Over sized enlargment|
With all the time and effort put into this test the last thing I was expecting was to be let down by bad manufacture. Of the thirty six exposures on the film around about ten frames are unaffected by some light damage luckily the majority of these are from the test exposures that put in an appearance. If there was going to be any question marks I was thinking it would be from the developer but it did not disappoint, the only thing to note was when i poured it from the developing tank it was a lovely pink rose colour.
Will I be using the film again? Yes! only because I have a roll of 120 on the shelf if the negatives show any light damage then I will not use it again. How can I say that when I use a lot of out of date film? With out of date film at least you know that the results could be iffy. You don't expect it from new in date stock.
|Used PMK Pyro.|