it needs to be loaded into a processing machine/tank&reel/whatever in total darkness.
In 120/220 should be not a problem.
Wouldn't there be light piping along the edges, though? With 35mm you lose only part of the leader and maybe the first frame. In 120/220, both edges along the entire length of the film are exposed during camera loading/unloading.
Isn't that true for all film, though?
My concern would be with light piping along the edges of the film during loading and unloading in the camera...
Some labs use roller-transport machines that require separating the film from the backing paper, and putting the film in a 'cassette' before attaching a leader card.
This requires an inch or so of raw film to be exposed to light.
That's when the light-piping happens.
Kodak is changing all films to a PET base
I would doubt this.
In the Smarter Every Day video series IIRC they were coating Kodak Ektar and if continuity is held, they were showing ESTAR as the base material. I actually have been curious about it but haven't gotten to ask Kodak if they are migrating all products to ESTAR. If it is happening, it is on a rolling basis as a continuous improvement.
EK extrudes PET base for in-house use and I suspect other markets/customers. I would be surprised to see PET in 35mm film cinema camera films etc. I was surprised to see Kodak Gold 120 with an Estar base.
Some labs use roller-transport machines that require separating the film from the backing paper, and putting the film in a 'cassette' before attaching a leader card.
This requires an inch or so of raw film to be exposed to light.
That's when the light-piping happens.
Isn't that true for all film, though?
My concern would be with light piping along the edges of the film during loading and unloading in the camera...
I've loaded film into cameras standing in absolute blazing mid day sun with no issues.
Ah ok, got it. Well yeah - better be in the dark.Sure, me too, all the time.
My comment about 'true for all film' was about loading it onto development reels, though.
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