Re: 70MM Development

[Simon Nathan <simonwide@xxxxxxxxxxxxx>]

dear alan-i am supposed to answer you in type so small that
my spellcheck has a problem. simon  nathan

Alan Zinn wrote:

At 08:51 AM 1/7/1999 -0800, you wrote:
>The following is minimally related to panorama. I'm just calling on
>all that expertise and experience out there!
>
>I have started shooting 70mm Tri-X in 5 meter rolls. I have a Nikkor
>tank and reel. Using the same agitation as with 120 in normal tanks
>which works fine (3 inversions every 30 seconds), I get uneven edge
>development, i.e. denser and contrastier edges. If I cut back to 2
>inversions, that problem almost completely disappears, but I'm now
>getting uneven development in open areas, i.e. blotchy skies. Other
>than A.not using 70mm and B. not shooting skies, does anybody have any
>suggestions?
>
>Thanks!!!
>_________________________________________________________
>DO YOU YAHOO!?
>Get your free @yahoo.com address at http://mail.yahoo.com
>
Andy,
I used to get the same problem with 120.  I pre-soak the film for 2 minutes
and it helps. Also some tank/reel designs seem to be worse. If the film is
thinner or denser near the edges would indicate either more or less
agitation. For the heck of it try continual agitation and a bit less time.

AZ
>
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