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Subject 
Author 
Date 
Re: Checking PSP/Calibration 
Mike Pry  12:28 5 Dec 07 
I use a Bessler enlager with a 80mm Rogonar lens at f/8. Height of enlarger is 13 - 3/4". Light source is an Aristo cold light head. I need an EV of 3 to get my Delta 100 to fall in at 2.4 for my PSP. These of course will be different for other people but that is how I got mine to work. Also, my timer is set to .4 second. Worked like a champ.

When I started out in BTZS the only real problem I encountered was the spinning of the tubes. I was to aggressive and was getting erroneous results. I think Jorge struggled with that at first as well. As far as the whole BTZS concept goes, I really don't quite fully get the hows and whys and that bugged me at first but I ended up just being happy I could do the initial film and paper testing and then make the best images I have ever produced.
 
relationship between ES and DR 
shannon stoney  11:19 7 Nov 07 
Re: relationship between ES and DR 
Ben Wilbur  15:15 8 Nov 07 
Re: relationship between ES and DR 
Jorge Gasteazoro.   19:03 8 Nov 07 
Re: relationship between ES and DR 
Steve Sample  12:32 1 Jun 08 
light for test 
Pat Krentz  21:40 12 Sep 07 
Re: light for test 
Jorge Gasteazoro.   14:28 13 Sep 07 
Re: light for test 
Ben Wilbur  15:34 9 Oct 07 
Re: light for test 
Jorge Gasteazoro.   17:36 10 Oct 07 
Re: light for test 
Ben Wilbur  15:05 11 Oct 07 


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