DrTebi
Slide Lover
I am wondering if anybody who uses a Canoscan FS4000US has ever noticed that it stretches it's scans. Mine does... I started noticing that sometimes faces and other "known objects" just looked weird, as if the image was resized slightly with "constrain proportions" off.
When I compared the scans with scans from my Minolta scanner, and also from lab scans, I realized that this is true. After a bit of fiddling and math, I concluded that I always need to resize the height of a scan by 4.4 percent (e.g. in Photoshop I uncheck "constrain proportions" and set the width to 100% and height to 104.4%). Then it looks 99.9% correct.
So, does anybody else experience this? Could it be that my motor is a bit messed up?
By the way, it does not matter what OS or scanning software I use, always the same results. Nevertheless, besides this stretching issue, scans look quite nice, even better in color than my Minolta Dimage Multi Pro.
When I compared the scans with scans from my Minolta scanner, and also from lab scans, I realized that this is true. After a bit of fiddling and math, I concluded that I always need to resize the height of a scan by 4.4 percent (e.g. in Photoshop I uncheck "constrain proportions" and set the width to 100% and height to 104.4%). Then it looks 99.9% correct.
So, does anybody else experience this? Could it be that my motor is a bit messed up?
By the way, it does not matter what OS or scanning software I use, always the same results. Nevertheless, besides this stretching issue, scans look quite nice, even better in color than my Minolta Dimage Multi Pro.
astro8
Well-known
My scans look pretty well spot on...could be your aspect ratio.
I'm at 1920 x 1200.
You?
I'm at 1920 x 1200.
You?
DrTebi
Slide Lover
Good idea but--it cannot really be my aspect ratio... it's set correctly, and as I mentioned, the scans from the Minolta scanner look correct on the same monitor.
thegman
Veteran
Never had that on my FS4000, although it does kind of sound like a hardware fault, say if the motor which moves the film holder was going a little slow, I suppose that would cause the image to stretch a little. Just a guess.
sevo
Fokutorendaburando
That would be easy to check by scanning the same object twice, once at 0° and once at 90°, and rotating the latter back in Photoshop. If the scanner is at fault, they'd be even worse out of alignment than a single shot, if it is the display aspect ratio, they'd be matching.
cabbiinc
Slightly Irregular
I have two Canon FS4000US scanners, two Nikon Coolscans, and two flatbed scanners. One Canon gives "skinnier" scans than the other scanners. I don't have them all set up right now, but the one Canon scans the whole frame but there's less pixels on the short side.
DrTebi
Slide Lover
Thank you, at least now I know I am not crazy and that this appears to happen to someone else as well.
It's really too bad, as I do like the CanoScan scans a lot, nice colors and sharpness.
Anyway, I still use the scanner at times, and to fix the stretching problem, I now always scan in maximum (e.g. no cropping at the scanner software) and then I run an action in Photoshop that resizes the image (I did a few calculations while putting a "correct" scan as a layer over the image). Then I do all the cropping and editing. Works out fairly well.
It's really too bad, as I do like the CanoScan scans a lot, nice colors and sharpness.
Anyway, I still use the scanner at times, and to fix the stretching problem, I now always scan in maximum (e.g. no cropping at the scanner software) and then I run an action in Photoshop that resizes the image (I did a few calculations while putting a "correct" scan as a layer over the image). Then I do all the cropping and editing. Works out fairly well.