I am using VueScan with an Epson V800 to scan Black and White negatives.
After performing a Pre-Scan I select the area of the negative to be scanned indicated by the dashed lines.
In VueScan, I have the clipped highlight and shadow warnings enabled, blue indicates clipped shadows and Green indicates clipped highlights.
In the example below, notice how parts of the deep shadow areas of the rocks are showing blocked.
If I extend the area around the negative by extending the dashed lines, notice how the areas in the rocks are no longer showing clipped.
Can anyone explain why extending the crop box eliminates the blocked up shadows. Without a proper densitometer, I am unable to ascertain whether the negative has lost detail in those areas or whether VueScan is incorrectly showing areas with no detail
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