I have a nikon 9000 scanner, and for mf work the holder really does not hold the film flat well. The glass carriers seem awfully expensive for what they are, and for what Nikon charges for the scanner it is obscene that a glass carrier is not included.
At any rate, has anyone made their own? It looks like if I cut a piece of anti newton glass to the right size, it could be laid on top of the negative in the existing holder and hold it flat.
Anybody try this, or something similar?
I would just like to clarify my above statement. The Focal Point products are good. I received some very nicely cut pieces of glass that fit properly and look of good quality. It's just that unless your film is actually curled beyond what the very good Nikon holders can flatten there is absolutely no benefit that I can detect, at least with dry use.
I suppose I should explain that I was vaguely confident that the AN glass might diffuse the light a little and therefore noticeably reduce the "pepper grain" effect of grain accentuation that seems typical of the Coolscans. I saw no evidence of this. Probably because it is not really a diffuser, just something that slightly blurs the light.
Secondly, I thought there might be some small sharpness benefit going from "pretty flat" to "utterly flat". However, it seems that what you lose by going through some glass more than makes up for whatever tiny depth of field benefit you gain.
I am glad to have the products and I'm glad to see how easy Nikon have made it to remove and replace the flaps on the holders. I've certainly learned more about scanning. I'm still quite interested in some sort of diffusor material like the Scanhancer product. From sample images I've seen it seems to deal with the pepper grain in a similar manner to wet scanning but without the hassle and mess.
I have used AN glass from these folks:
http://www.fpointinc.com/glass.htm
to improve both the MF and the 35mm trays in my 9000.
For 35mm, I've made a brass wire frame that hinges on the original holding flap and is held in place by 4 swing tongues I've added. The film strip goes in the normal way, then two of the 35mm strips from the site above go on top, AN side in contact with the film, then the frame closes and holds everything perfectly flat.
Not only has the film curling disappeared but I also get near perfect focusing flatness across each frame.
For the MF tray, I use one or two of the MF-size AN glass strips from the above site, depending on how curled the film is.
For one strip, film goes in first emulsion side down, then glass strip goes on top with AN side down, then I close the original clips as they have plenty of give.
For two strip use I just remove the two original clips, lay on strip of glass with the AN side down, then the film - emulsion side down - then the top glass strip as before and sticky tape holds the lot together. The lot is like a sandwich with the film as the meat.
The reason for the bottom strip having the AN side down is that most film has a reasonably rough emulsion side and there is no need for AN to be against it.
But some of the modern films have a smooth emulsion side, and for those I use AN sides against the film in both top and bottom strips.
As I said, this is only needed for badly curled film. For most normal flat film, just one strip of glass is enough.
If you want photos of the whole thing, I'll see what I can do.
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