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View Full Version : 8x20 Paper Negs to test a lens.



Reinhold
07-11-2013, 07:58 PM
I needed a quick way to take a few photos to illustrate the performance of my new 790mm f:5.4 Wollaston lenses.
The only way I could do it quickly was to lash the lens onto my 8x20 Canham and make some paper negatives.

I preflashed some PhotoWarehouse VC RC paper and develope the negative in some old, used Ansco 130, diluted 1+15.
One negative developed nicely in 7.5 minutes, the other in 14 minutes.
Since the lens has no shutter, exposure is guesswork.
But paper is developed under safelight so it's easy to evaluate density despite the uncertain exposures.

These are scans aof the negatives, I'm super pleased about the results...
More details are here...
http://www.largeformatphotography.info/forum/showthread.php?105227-Immages-from-the-790-f-5-4-Meniscus-Lens

Reinhold
www.re-invetedPhotoEquip.com

JohnRichard
07-11-2013, 08:00 PM
Beautiful!