The default EPSON Preview settings have made the image appear quite harsh: the Input high values have been clipped and appear pure white - like chalk. Meanwhile, the overall Output has been constrained on both ends of the tonal scale: instead of 0-255, our image contains only 10-200. Now let's see how to make things look much nicer.
We have corrected the default Output settings. They now go from 0 to 255. We have adjusted the Input settings so that the dark values on the left side, are just dark enough to render the clear film edge as black - but no darker. The right-side setting is light enough to show the high values naturally, with no clipping or unnatural loss of texture. (These roses were pink. We do not want them to look pure white. Photographs are not required to contain pure white tones, or pure black.) The right slider is actually past the end of the histogram.
Finally, we can adjust the Gamma setting back to normal, namely 1.0. This should Kingston for mac. give us a 'linear' scan with no disproportionate contrast curve applied but in actual practice we should use whatever Gamma value makes the image look best. Note that monitors are normally set to a Gamma of 2.2 or 1.8. Perhaps EPSON considers these as normal values: this is not a well-documented feature.
And, if you're batch scanning from Vuescan raw files with a series of names starting with: roll001-01 Naming your output file: roll001-01= Will make the files follow that pattern. With this setup, you can jump around, the output file names are not sequential, just equal to the raw suffix number. There is also a convention for using wild cards. Use VueScan's auto repeat facility This automates the batch scanning process completely, so you don't have to keep clicking the Scan button On the Options panel select the Input tab Set Input Auto repeat to a 5 sec delay.
Batch Scan Vuescan
Batch Scan With Vuescan
Vuescan Scanner Software Free License
To bypass all tonal corrections, see How to Minimize All Tonal Adjustments below.