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Optical, Nominal, Interpolated Resolution

PostPosted: Tue Apr 10, 2012 6:34 pm
by bri859
I'm going to scan a bunch of slides and I wanted to attain the proper setup on my Epson V600 before I start. I'm using AI Studio software (ver 8) on a Mac Pro.
I want my scans as big as they can be while still retaining the highest quality.They will be for archiving purposes but mostly just for viewing on a computer/ipad screen.
I saw in a Silverfast Quicktime movie that the colors in the resolution slider refer to optical, nominal and interpolated resolution. I understand optical and interpolated resolution but the size I want to scan at falls in the "nominal" resolution area. On my scanner the nominal resolution settings are:
3200 dpi
4213 x 2841 pixels
What exactly is "nominal" resolution? Is there any reason I should not use this setting with my scanner?
Thanks!

Re: Optical, Nominal, Interpolated Resolution

PostPosted: Fri Apr 20, 2012 8:28 am
by LSI_Morales
Hi there

bri859 wrote:What exactly is "nominal" resolution? Is there any reason I should not use this setting with my scanner?


It is the resolution given by the scanner manufacturer.
Some components of the scanner might in fact have this resolution. However, the optical resolving power is generally less than the one given by the scanner manufacturer.

Of course you can and should use this resolution (otherwise it would not be there) if that is the one you need. It will give you the size in pixels for each side of your resulting image.

Kind regards

Re: Optical, Nominal, Interpolated Resolution

PostPosted: Fri Apr 20, 2012 5:12 pm
by bri859
Great! I do need them to be large and the scans I've tried look good to me but thanks for the confirmation.

Re: Optical, Nominal, Interpolated Resolution

PostPosted: Sat Jun 30, 2012 9:41 pm
by EricLawrie
If I wish to scan 35mm slides in SF8 Ai Studio to HDR scans at the maximum quality possible of my scanner (Nikon LS5000), should I be moving the slider below the Resolution Bar so it sits underneath the yellow/nominal section rather than the green?

Re: Optical, Nominal, Interpolated Resolution

PostPosted: Mon Jul 02, 2012 4:23 pm
by LSI_Ketelhohn
Dear customer,

The "yellow value" is the last physical resolution.
Higher values have to be interpolated.


kind regards,
Arne Ketelhohn