[APML] Warm Weather Film Response-Or Lack Of It???

[KGKIRKLEY@aol.com]

Hello to all:
I have been reviewing about 18 or so images just taken this past new moon 
period on E200 processed +1 stop. The depth of the exposures is not nearly what 
they should be.
These were all taken with either an  AP 155 f7 with field flattener and 
Pentax 67 with vacuum back or a Hasselblad with 150 Sonnar at f5.6. Exposures were 
60-75 minutes on objects like The North America, M8, M16-17, Ic1396, etc.

These were taken from a dark site at Ft. Griffin St. Park about 170 miles 
west of Dallas, Tx. The weather was clear with good transparency. Daytime 
temperatures were around 100 and by dawn was 70 or so. The cameras and film were kept 
in my air conditioned VW Eurovan Camper.

I am thinking the warmer nightime temperature is rendering the E200 less 
sensitive than in the cooler times of the year. I have images of The North America 
taken in early October with the same set-up, same film and processing that 
are much deeper.
Any thoughts?

I know the Williams Cold Camera (dry ice) was a way to increase film se
nsitivity before the advent of hypering. 

Kent Kirkley




 
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