
Originally Posted by
paulbarden
That's great, but wouldn't it be nice if the seller offered to share the manufacturer's specs for the film?? Omer has been asked on multiple occasions for this information and said "no". When pressed for the information, he becomes - shall we say - "prickly".
From Brent Woods' review of the new film (available on Freestyle's site):
"What bothers me about this film is there is absolutely no technical information from CatLabs about this film. After receiving my first 4x5 box of film I expected to find a technical information sheet in the box. When in the dark, as I opened the film, I felt a piece of paper that I thought was the technical sheet. However, when the lights were turned on the paper I felt was a sticker with CatLabs logo on it stating to shoot more film. This is certainly cute but not the needed technical information.
The information I was looking for was what is the spectral sensitivity of the film and how to correct for reciprocity failure? Is this a purely a panchromatic film or what is it an orthopanchromatic film. After exposing a sheet of film to a Kodak Q14 color step wedge I have found the film is neither panchromatic nor orthopanchromatic."
and:
"So, what concerns do I have? First and foremost, absolutely no technical information about the film from CatLabs; if serious photographers are to use this film then reciprocity curves and spectral sensitivity are absolutely needed."
I can deal with not having spectral sensitivity information about a film, but absolutely ZERO information about reciprocity characteristics?? That is essential information. I need to know the reciprocity traits for the films I work with, and I'm not going to adopt a new film - no matter how cheap it is - if the seller isn't willing (or able) to supply basic information like reciprocity characteristics. The CatLabs web site includes a point list of traits for the film, but it's all in marketing speak, with absolutely no specifics. Why Omer has decided to intentionally withhold this information is a mystery - unless the data will be deleterious to sales and he's working to obfuscate it.
If you're selling 8x10 format sheet film, you have to acknowledge that you're not selling to a bunch of students who just want to experiment - your customer base is going to be people who work in large format (and many of them have decades of experience) and these people work hard to get the most out of their materials, and to do that you need to know what the characteristics of your materials are.
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