Newton rings with glass plate negative?

[Jim Chinn]

For those of you that work with wet plate negatives, is there any kind of problem with newton rings after exposing through clear glass portions of the neg?

 

[reellis67]

It should not be a problem. Newton's rings are formed when a film negative is pressed against a smooth piece of glass, and since all you are doing is projecting through the glass plate there is nothing to create the problem...

- Randy