Hi
Considering i made 4 of these, i can provide some info.
1. look for process lens, they cost nothing. I payed ~10eur on a pair of eskofot ultragon lenses ( 150 f8 and 210 f8 ), then another ~120 eur for 3 Zeiss process lenses ( 240, 360, 420 all f8 ).
2. Get rid of the led light : remove the long plastic diffuser and either paint it with black nail polish, or just remove it with a wire cutter, scanner dosn`t mind
; seems you already done that.
3. LIDE scanners > 100 ( lide 110, lide 220 ) have a much better mechanical side ( rack and pinion vs wire ) for moving. This will remove SOME of the horizontal striping. You can never fully remove the striping it causes.
4. The best thing you can do is modify the scanning assembly. With some care ( i can explain in better detail if needed ), you can remove the actual cis sensor and move it to the top layer of the scanning assembly.
Currently it resided underneath some linear lenses ( done to increase sharpness when scanning flat things ). After moving it to the top layer ( under the glass ), you can paint the green pcb it resides on black ( it will cause reflections with the glass on top ).
This will remove ALL vignetting, and you can scan the whole 8x10 ( actually A4 size ).
5. Get a UV/IR cut filter. The CIS sensor sees a LOT of UV and some IR. It will clean your photos
An example of what was done with a modded Lide35, without filter. :
LaterEdit : it seems that it did not attach at a respectable resolution, you can see it better on my Flickr :
https://www.flickr.com/photos/-silviu-/16638183526/
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