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How to keep film strip flat while scanning.
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PostPosted: Sat Jul 09, 2011 6:46 pm    Post subject: How to keep film strip flat while scanning. Reply with quote
One of the solution is http://www.scanassist.org owned by our member Axer.

See my first test here:

http://forum.mflenses.com/welta-weltax-tessar-red-t-fomapan-100-foma-r09-t41064.html


Need to be more clean due we have an additional glass which can collect dust as well.


PostPosted: Sun Jul 10, 2011 8:57 am    Post subject: Reply with quote
generally any anti-newton glass will function well. also nikon sells them for the high-end scanners like LS-9000ED and so. another option is to use anti-newton glass from enlargers, but you must cut it for proper size and ussualy it doesn´t cover all of images of the film strip.


PostPosted: Sun Jul 10, 2011 9:34 am    Post subject: Reply with quote
I use a piece of anti-NR glass for 120 film, which is far more difficult to keep flat than 135. I tape the film to the glass and rest it on 4 thin coins on the scanner platen, using the flexible Epdon film frame, and it works very well indeed. With 135 film, the main direction of the curl along the strip is pretty well corrected by the Epson film holder, but curl across the width is still a problem, and the amount of curl varies with different films, I've found. This glass insert for 135 would cure all that. I'm very interested.


PostPosted: Sun Jul 10, 2011 9:51 am    Post subject: Re: How to keep film strip flat while scanning. Reply with quote
Attila wrote:

Need to be more clean due we have an additional glass which can collect dust as well.


Being on the side of the lamp, some little dust should not be a major problem.
It would be worse of course if dust was on the side of the scan head.


PostPosted: Sun Jul 10, 2011 1:07 pm    Post subject: Reply with quote
Axer made glasses are thick , heavy ones makes perfectly flat curly strips. I like to use it especially to 120 strips. 35mm is pretty ok in genuine holder rare need this tool.


PostPosted: Sun Jul 10, 2011 1:41 pm    Post subject: Reply with quote
Do you have to use the holders? Can't you just place it on the scanner glass and then put the anti newt glass on top?


PostPosted: Sun Jul 10, 2011 5:26 pm    Post subject: Reply with quote
TBaker wrote:
Do you have to use the holders? Can't you just place it on the scanner glass and then put the anti newt glass on top?


Holder make it to easier to find right position, don't need to find and adjust all time. I think possible without holder but inconvience


PostPosted: Sun Jul 10, 2011 8:29 pm    Post subject: Reply with quote
TBaker wrote:
Do you have to use the holders? Can't you just place it on the scanner glass and then put the anti newt glass on top?

You can, but you'll often get Newton's rings where the film is touching the scanner glass. As I said, you need to tape the film to the AN glass and use 4 coins or similar to lift the film off the scanner bed. And the Epson scanners won't work properly unless you use one of the supplied guides. I use the flexible guide for large format negs and put the glass and film inside the frame.


PostPosted: Sun Jul 10, 2011 8:51 pm    Post subject: Reply with quote
To echo a tip often given by Attila:

First flatten the film by pressing inside a book with weights on top. Flat film fits better against ANR glass too!

Moire appears when and where surfaces meet.
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