Exactly what I've seen too, and I also have a few fpan100 120-rolls with the emulsion number 09256 that have had this artefacts. I don't have these problems with the 135-film (emulsion number 11315-05).Photo Engineer said:Comet shaped defects are often associated with a coating problem, not usually with an emulsion problem.
They are related to bubbles or dirt in the emulsion that leave a dot and then a 'v' streak down from the dot creating the comet shape. This is due either to a dirty, dusty environment leaving particulate matter in the melted emulsion, badly prepared support, or bad or inadequate surfactant and anti-foaming agents.
PE
eumenius said:I am very sorry that this 09256 bad lot has touched not only Russia - indeed, the footage numbers on the film itself say "092 ULTRA 100". All other rebranded films with bluish base and such footage is definitely Fomapan 100.
dphphoto said:jdef: what were your problems with JC 100? I had good luck with the first few packs I bought, then it want haywire on me. I couldn't get any shadow detail, even exposing at e.i. 50 or less, and it had been working for me at e.i. 64.
I've heard that this film is made in China, for whatever that's worth.
I've switched to the JC 400, which is Czech, I believe, and so far so good. It looks more like a 100 speed film, with tight grain, and at e.i. 200 has terrific shadow detail. Hope it stays consistent. Dean
FOMA is a well-respected and serious company, and they should definitely keep up to their standarts -
Fotohuis said:As precaution we took out all our 120 Fomapan 100 rollfilms batch 09256 (-7) , exp. 8-2007 from our stock to prevent films are going out to customers.
Anyhow thanks for your information on APUG, we will do some randomn checks on our batch ( -7).
Best regards,
Robert
abeku said:This defect is very sporadic and local,
so in standard appointed control system was not found.
We thicked our controll as prevention - we will make a more checking, which
could find similar defects."
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