Do I recall correctly that, if you use the lens with the F# closed up a few stops the fall off will be less? Doesn't coverage increase with higher F#s?
On Wed, 24 Oct 2012 21:10:46 -0400 "K W Hart" <kwhart1@xxxxxxxxxxxx> wrote:
Good suggestion. A question: if you had an enlarger exposure meter, so that you could meter the light at the center and the corners, would that eliminate the need to make a print?Ken Hart kwhart1@xxxxxxxxxxxx----- Original Message ----- From: Bob Younger To: pure-silver@xxxxxxxxxxxxx Sent: Wednesday, October 24, 2012 8:28 PM Subject: [pure-silver] Re: 60 mm WA Enlarging Lens on an Omega B-8One suggestion. Put in a negative and focus as though you're going to make a 16x20 print. Take out the negative and make a 16x20 print such that the center of the print is middle grey. Develop normally. Wash. Now look at it and see if there is any noticeable fall-off at the edges and/or corners. Better yet, use a reflective densitometer to measure reflectances across the print. Now (assuming that everything's even) you can make prints without worrying about uneven light across the print. On the other hand, if you find that there is unevenness, you can make a couple of other tests and determine what percentage of fall-off you need to compensate for to get an even print. Have fun. Bob YoungerOn Wed, Oct 24, 2012 at 3:07 PM, Marvin <marvbej@xxxxxxxxxxxxx> wrote:The Schneider 60 mm W.A. Companon I bought on ePrey arrived today and seems to work OK with the basic condenser on my Omega B-8. It looks like I could make prints up to about 22-1/2" wide from 2-1/4 X 2-1/4 negatives and, more important, make 16 X 20s [actually 15 X 19s, with 1/2" borders] with some room for cropping. I haven't actually made any prints yet, but will report back with the results ASAP.------------------------------------------------------------------------------ No virus found in this message. Checked by AVG - www.avg.comVersion: 10.0.1427 / Virus Database: 2441/5351 - Release Date: 10/24/12
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