Re: [APML] Focus Problem with Pentax 67

[Alan Voetsch <alanv12952@yahoo.com>]

--- Jason Ware <jtw@galaxyphoto.com> wrote: 
> If it is focused at the edges and out of focus in the middle its
> humidity induced film creep. Many, including myself have
> solved this problem with a steady steam of nitrogen. You
> can get parts and tanks from a welding supply.

I've heard this problem (solution also) mentioned many times here. I
wonder if anyone had any indications as to what levels of humidity can
start causing film creep. I know that large areas of this country have
normally higher humidity levels than we do here in Southern Oregon. As
I'm considering acquiring one of these larger format cameras for
piggyback use I'd like to hear more about this problem.

Thanks,
Alan



SCT Astrophotography: http://www.pbase.com/avoetsch/astrophotography
FS-102 G-11/Gemini: http://www.pbase.com/avoetsch12952/tak_fs102
& http://www.pbase.com/avoetsch12952/fs102
& http://www.pbase.com/avoetsch12952/takpf

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