[LargeFormat] Re: Shooting LF in below freezing conditions

[Joseph O'Neil]

>And a hell of a lot colder than -20c (or even the -40c I've shot at). I've
>never noticed any difference with the cold that I can tell.


         when you are doing astro-photo shots over the period of say an 
hour, with colour film, print or slide, the deinsity of your negatives on 
the same objects taken in winter as opposed to summer are very apparent.

         however,t his is with colour film mostly.  I ahve tried out 
several B&W films for astro-photo use, and almost all of them have terrible 
reciprocity failure.  T-max is an exception, but it has very terrible red 
response, si it's not too good that way.

         Tech pan seems to be the only really good B&W film for astro-photo 
use, but it has to be gas hyepr sensitized to be useable for astro-photo 
work.  By comparison, something like Kodak E200 slide film is useable right 
out of the box.
joe



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