I believe you. I've never used a drum scanner. For my flatbed, I've machined a negative holder/system that makes getting and keeping the negative aligned properly easy.
I believe you. I've never used a drum scanner. For my flatbed, I've machined a negative holder/system that makes getting and keeping the negative aligned properly easy.
“You often feel tired, not because you've done too much, but because you've done too little of what sparks a light in you.”
― Alexander Den Heijer, Nothing You Don't Already Know
.1, .4, .5 degrees of rotation make no difference on "quality", especially when we instruct the scanner to over scan.
Mounting 1 or 2 pieces instead of 10 makes it simpler on both the human and machine (both need breaks) and helps to balance the drum better
There's never been a balance problem on the 4 inch diameter Howtek drums with one or thirty pieces of film mounted. I'm far more likely to mount up to ten 35mm frames if I have that many to scan, and to be honest, with only an inch and a half on the long side to line up, 35mm frames are more likely to be a little crooked. If you're mounting a six frame strip, that's a much different proposition and easy to get straight.
If you're scanning on the large 8 inch drum on something like a Howtek 7500, which I've done quite a bit, it either helps to mount a dummy piece of film on the opposite side of the drum - or - use the speed clamp function in the control panel to slow the rotational speed of the drum. And yes, fractions of a degree make no visible impact on the file.
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