chavez_ding
Member
hi everyone. im pretty new to scanning film. decided to start with epson v500 thinking its good enough for my purposes. but im having a little trouble with it. i would really appreciate help.
i have a color neg film scanner at a local shop that i trust and for comparison i scanned the same neg with v500 using epson software. what i have with the epson scan is horrific amount of CA for some reason that the lab scan doesnt show. looking at them side by side, i can see that epson scan has comparable amount of detail. isolating one of the channels, it certainly is sharp enough. but in RGB mode, whatever sharpness there is to have is destroyed by CA.
so, first i tried to correct it with the lens correction tool in PS but all my efforts just made the image look worse, not better. than i realise PS corrects for CA caused by a lens capturing a single image, so aberrations must be circular(expanding toward the edges) on a lens right? the scanner doesnt work that way i suppose. than i try to move the channels seperately in order to compensate for any sort of channel misalignment. when i do this, some parts of the image do improve but other parts degrade. appearently its not a simple misalignment either.
im out of ideas now. i want to think that this is something that can be corrected by software. i dont want to sell the scanner because the detail is just there if only i can correct for CA.
the image on left is from the lab, the one on the right is from the scanner. please ignore the horrible sharpening artifacts (im still learning) and the lady with generous sized behind
i have a color neg film scanner at a local shop that i trust and for comparison i scanned the same neg with v500 using epson software. what i have with the epson scan is horrific amount of CA for some reason that the lab scan doesnt show. looking at them side by side, i can see that epson scan has comparable amount of detail. isolating one of the channels, it certainly is sharp enough. but in RGB mode, whatever sharpness there is to have is destroyed by CA.
so, first i tried to correct it with the lens correction tool in PS but all my efforts just made the image look worse, not better. than i realise PS corrects for CA caused by a lens capturing a single image, so aberrations must be circular(expanding toward the edges) on a lens right? the scanner doesnt work that way i suppose. than i try to move the channels seperately in order to compensate for any sort of channel misalignment. when i do this, some parts of the image do improve but other parts degrade. appearently its not a simple misalignment either.
im out of ideas now. i want to think that this is something that can be corrected by software. i dont want to sell the scanner because the detail is just there if only i can correct for CA.
the image on left is from the lab, the one on the right is from the scanner. please ignore the horrible sharpening artifacts (im still learning) and the lady with generous sized behind
Attachments
Paterson
Member
check your unsharp mask setting
P
P
Keith
The best camera is one that still works!
I use my V700 with as little interference from the Epson scan software as possible ... nothing turned on and exposure adjustment set to minimum.
I agree ... it does look like an oversharpening issue.
I agree ... it does look like an oversharpening issue.
chavez_ding
Member
uh im avare of the oversharpening but CA was there before the sharpening.
Keith
The best camera is one that still works!
Maybe it's an individual problem with your particular scanner ... in which case I guess there's not a lot you can do except sell it as you said!
Stuart John
Well-known
Yep my v500 will do the same thing. I guess it is just the cheaper optics epson uses in the v500 compared to the more expensive v700. As I scan mostly B&W flims and only produce small prints I don't really give it much thought.
Stuart John
Well-known
Here is a color scan from my v500. You can see it on the edges of the shirt but I don't worry about it.
