[pure-silver] Re: AN Glass Effect on Sharpness

Elias..
The 4x5 glass negative holder for my Durst L1000 'came' with both upper and lower Anti-Newton glass. The 'mitered' edge makes it difficult to install the glass upside down... or for those in the Southern Hemisphere 'downside up'
In the days when I was comfortable printing from C41 negs.. and/or Cibas from chromes, I cannot remember any time when the 'ring pattern' was evident in any print. 

Ken




On 30-May-09, at 8:29 AM, Elias Roustom wrote:



Hi All,

I think this question is for all the optics aficionados here:
My enlarger uses AN glass above the neg, and clear glass below. With my b&w Rollei negs this works very well, but with color negs not well at all. Even though the emulsion side is in contact with the clear glass, I still get rings. I'm thinking of getting another piece of AN glass for below the neg. (emulsion side). Will that have any effect on the projection, and the resulting print? 

Thanks,

Elias
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