BTZS.org >> Forums home page
 
 Film & Paper Testing
 Film & Paper Testing Discussions

Announcements | General Discussions | Plotter | ExpoDev Palm | Film & Paper Testing | Practical BTZS | ExpoDev for iOS



 
Messages 31 to 40 of 653 (Total: 653) First | Prev | Next | Last
Subject 
Author 
Date 
Re: Strange Results for Fomapan 100 in HC110 
Steve Nicholls  16:56 20 May 12 
Testing for a point light source 
Dr. Elliot Puritz  16:08 26 Feb 12 
I have a considerable number of film curves done with 4x5 sheet film and drawn on plotter assuming that a diffusion light source is used. I have tested my commonly used papers as well, but testing on a step wedge with a diffusion light source. I am curious: Can the same film data be used BUT the parameters in plotter changed so that plotter can furnish reliable exposure and development information for a POINT source ( condenser head )in ExpoDev? Of course, the film has to be developed to a certain ES...so, the same question obtains regarding the paper-or will the ES values be so different that the data used for a diffusion head will be unusable? I will pose the same questions on a few other forums. Thanks for helping.

Incidentally, does anyone think that enlarments made with a condenser enlarger ( 4x5 to 8x10 or 11x14-most often the former ) are any "better ( sharper, more contrasty, anything!? ) then those made with the more usual diffusion enlarger?

Unfortunately...little action on the BTZS site....oh well.

Elliot
 
100TMX - has it changed again? 
David Jade  13:36 26 Oct 11 
Re: 100TMX - has it changed again? 
David Jade  22:57 26 Oct 11 
EFS higher for 4 min development than 5:40 
Randy  13:00 13 Jul 11 
Re: EFS higher for 4 min development than 5:40 
David Jade  23:57 13 Jul 11 
Re: EFS higher for 4 min development than 5:40 
Randy  5:56 14 Jul 11 
Re: EFS higher for 4 min development than 5:40 
David Jade  0:44 15 Jul 11 
Re: EFS higher for 4 min development than 5:40 
Fred Newman  19:32 14 Jul 11 
Tmax 400 Film test@ DDX 1+6, 71-72F  
Ben Wilbur   11:11 14 Apr 11 


BTZS.org >> Forums home page
 
 Note: The BTZS.org forums are now in read-only mode Last Updated: 22 Aug 2002