R
Robert Feinman
I've been scanning 6x7 color negatives on an Epson 4870 using
Vuescan. Using half resolution of 2400 gives a nominal print
size of 17x22 which is already bigger than my final print.
The other day I scanned an image at the full resolution of 4800
dpi since I was planning to crop it. The image appeared
"sharper" than the one at 2400 even when both were scaled to
final print size. So, my question:
Does the scan software use just every other sensor to get to
half resolution or does it use all of them and then interpolate
to downsize in software? If the latter, does it use the same
algorithms as in Photoshop or something else?
What I'm aiming at is it better to scan at full resolution and
then resample in the editor software or not? Scanning a large
negative like this at 16 bit depth makes for a really large
file and slow editing, so reducing the size in the scanning step
has some advantages from a workflow point of view.
Vuescan. Using half resolution of 2400 gives a nominal print
size of 17x22 which is already bigger than my final print.
The other day I scanned an image at the full resolution of 4800
dpi since I was planning to crop it. The image appeared
"sharper" than the one at 2400 even when both were scaled to
final print size. So, my question:
Does the scan software use just every other sensor to get to
half resolution or does it use all of them and then interpolate
to downsize in software? If the latter, does it use the same
algorithms as in Photoshop or something else?
What I'm aiming at is it better to scan at full resolution and
then resample in the editor software or not? Scanning a large
negative like this at 16 bit depth makes for a really large
file and slow editing, so reducing the size in the scanning step
has some advantages from a workflow point of view.