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I am reticent to question you Simon, but are you positive about that? Fuji Quickload Acros is adhered to its leader and trailer with some kind of adhesive, but the film base appears to be identical to standard (non-Quickload) Acros. Which is to say, the same 7-mil PET one finds most black and white sheet film coated on. Fuji's version, although I've measured it with digital calipers and found the thickness specification to be met, is more flexible than other manufacturers' film bases of the same material and dimensions.Quickloads have a different base support than normal sheet film...
Thanks for your reply. My understanding that the base of QuicklLad Acros doesn't differ from the base of loose-sheet Acros is a result of observing the physical characteristics of each version, with reference to the most recent production. I can find no difference in length, width, thickness, flexibility, surface texture/gloss of the base and emulsion sides or resistance to tearing....I know it was a different support 'when quick loads came out' as we looked to provide a product and you had to have a different support ( base )...you could be correct if they reverted to the standard base...
I had one unexposed quickload sheet.
The sheet was from same box than all sheets with blotches. It was stored along with others and I carried it during my two month trip with other sheets.
Now I took a test photo using that one remaining sheet. I also took test shots to fresh single sheet Acros.
Then I developed the test quickload, one quickload (exposed during trip) and two fresh single sheets. All in the same time, in Paterson Orbital.
All were fine except the one exposed during my Japan trip.
If the cause is freezer burn, how come that all sheets aren't affected similary. But most (all developed so far) has same kind of defect?
I kept films with me. Ofcourse there's always security scan, but it should be safe up to iso 1600.
My tmy2 sheets are fine, like fomapan 200, ektar 100 and e100g also. Even velvia 100f quick loads (expired) are fine.
Only those acros quick loads has problems.
I really like quick loads and acros, but this is (or was, as I have developed almost all sheets) a bit alerting.
I kept films with me. Ofcourse there's always security scan, but it should be safe up to iso 1600.
My tmy2 sheets are fine, like fomapan 200, ektar 100 and e100g also. Even velvia 100f quick loads (expired) are fine.
Only those acros quick loads has problems.
I really like quick loads and acros, but this is (or was, as I have developed almost all sheets) a bit alerting.
i had something similar happen to me on fomapan but for 120mm i don't know if it applies... and once with fuji acros 100 (120 again) i think... If i remember correctly it happened when i did vigorous shaking the first 30 sec or so. In reading about this problem... others mentioned fomapan doing this over several blogs... They also mentioned the stop bath possibly being a problem.. but it's not so... cause i have never used anything other than water. I think perhaps it is air bubbles... I now use the turning rod provided with the patterson tanks. I haven't encountered this problem since.
Also if you wet the film before developer- i no longer do this (fuji says its unnecessary)- this might also contribute to it (the formation of 'spotting) for some reason, maybe saturating the film with water making it harder for the developer to take effect in some areas.
So far perhaps best guess is leaked moisture or frozen crystals..
I have to investigate this a bit, although I don't have Acros quickloads any more and it's no longer in the production.
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