Years ago I had this exact problem with Rollei Retro 80S. Not that it matters - it's a long time ago.It's not old film and it's from a good brand (Rollei).
I just got this defect on the image after developing. I used Xtol 1+1. The thing is that other films from the same batch of Xtol (same method) came out perfect. Gives me the impression that it's related to development but can it be the film ? Otherwise for me it's difficult to explain. And if it's the film, does one know what can be the source of the problem. It's not old film and it's from a good brand (Rollei).
This is on Aviphot 200, which is the same stuff as 3 films Rollei sells. I found that when I used a red filter, the problem got very intense, and when I didn't, it was barely noticable. Not sure why. Maybe an exposure difference.
View attachment 410761
Same, the shots from my original post are also Rollei Retro 80S.Rollei Retro 80S
Yes, medium format.What format is this? 120 ? If so, looks a lot like mottling from the backing paper.
Only their Fomapan 200 film is problematic in a similar way. The 100 and 400 are OK QA-wise.What about Foma? Is it a brand to avoid in medium format in that respect?
Also I would like to ask about this defect, the dark dots. Same problem?
Since it is 120, it is likely backing paper issue that has been popping up over the past decade.
Only their Fomapan 200 film is problematic in a similar way. The 100 and 400 are OK QA-wise.
That looks like a different kind of defect, but the images are too small to make out what's going on exactly - and even with bigger images it may not be possible to figure out exactly what happened there.
Interesting; hard to tell. First thing that comes to mind is a few bubbles stuck to the emulsion during development.
Agree—they look like air bells to me.
FWIW, wrapper offset issues have been encountered for as long as there have been films with backing paper.
It isn't totally clear what has made them seem to be more prevalent - changes in film components and technology, changes in the paper industry, changes in the printing industry, changes in distribution and retail, changes in use patterns, the availability of the internet to share experiences.
It probably is some combination of all.
But I like to blame the internet
Not particularly. Foaming can be a problem with remnants of wetting agent, but this tends to manifest really as foam and larger bubbles. Such tiny bubbles probably arise from pretty complex interactions on the film surface as it's being wetted. I sometimes get them on my carbon tissue (which is a gelatin emulsion as well), in particular if I dunk a tissue into the water, immediately lift it up and then let it fall back again. For some reason this often causes small bubbles that turn out to be very, very persistent.Thanks! Are some emulsions, some film types, more susceptible to this?
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