[pure-silver] Re: Newton... Re: donut solution; enlarger lens problem

  • From: Peter De Smidt <pdesmidt@xxxxxxx>
  • To: pure-silver@xxxxxxxxxxxxx
  • Date: Fri, 11 May 2007 22:20:33 -0700

Some emulsions sides of film can be shinier than they used to be, and this can lead to newton's rings between the emulsion side of the film and the lower glass in the carrier frame. For example, Howard Bond has anti-newton glass both above and below his large format TMX and TMY negatives. He says that there isn't any apparent degradation from the lower glass, but this would depend on the fineness of the anti-newton glass and the magnification. In other words, coarse anti-newton textured screens and/or high magnification make degradation more likely.

=============================================================================================================
To unsubscribe from this list, go to www.freelists.org and logon to your 
account (the same e-mail address and password you set-up when you subscribed,) 
and unsubscribe from there.

Other related posts: