[LargeFormat] Enlargers and Glass Neg Holders

[Lee Carmichael]

Clive,
         One other thing I think is important is not to really smash the 
two glasses and the negative together.  That Elwood pressed them together 
but did not really press them down hard. I am struggling to find the words 
here but the idea is Newton Rings can be avoided.



At 11:47 PM 12/7/00 +0000, you wrote:
>At 4:57 pm -0600 7/12/00, Lee Carmichael wrote:
>>Clive,
>>         For several years I printed with a 5x7 Elwood it had a diffusion 
>> light source and a glass carrier.  I never had Newton Rings.  I did have 
>> a lot of dust, but I learned how to deal with it. Clean with soap and 
>> water and dry them very dry before you put the neg in place.  I suspect 
>> that some of the reason I had little or no spotting was because of the 
>> diffused light source.  Condensers exaggerate the problem, IMO.  I now 
>> have a D-2 with the VCL 4500 coldlight that Aristo makes and still not 
>> much dust.  YMMV.
>
>Well that goes to show that it can be done :-)  One of the 138S enlargers 
>here has a Chromega E Dichroic head so guess I will be using that one with 
>the 5x7 glass carriers. Hopefully the diffused light source will have the 
>same effect for me - condenser enlargers definitely make the problem worse 
>even without glass.....
>
>I may try to use isopropanol alcohol to degrease and clean the glass 
>followed by a micro-fibre cloth wipe.
>
>One of the glass sheets (the top one) is anti-Newton glass. I have had 
>Newton rings before with another very old enlarger - which also put me off 
>glass carriers....
>
>--
>All the best,
>
>             Clive Warren   http://www.f32.net
>                            Large Format travel and stock photography
>
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As usual,
Lee Carmichael

check out: http://www.f32.net/Services/Photographers/LeeCarmichael.html