[rollei_list] Re: Anti Newton Ring Glass Effect on Enlarging

At 09:00 PM 5/28/2009, Elias Roustom wrote:
>Hi All,
>
>I think this question is best 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?
Yes, folks, I puzzled through this as well as did you. I suspect that AN means "anti-Newton". Damn, folks, but I viscerally HATE acronyms and initialisms.
I have nothing to offer Brother Elias. In a half-century of darkroom work, I have never once encountered Newton's Rings. 

Marc


msmall@xxxxxxxxxxxx
Cha robh bàs fir gun ghràs fir!

---
Rollei List

- Post to rollei_list@xxxxxxxxxxxxx

- Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe'
in the subject field OR by logging into www.freelists.org

- Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with
'unsubscribe' in the subject field OR by logging into www.freelists.org

- Online, searchable archives are available at
http://www.freelists.org/archives/rollei_list

Other related posts: