Detail from Downtown Images
This is typical of output from a good scanner without multi-sampling. Noise appears in darkest areas. |
At 16x columns in lower-right of image appear clearer.
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CCD scanned, also at 16x. The histogram for this picture was shifted to the left. Increasing the analogue gain to 40% mapped the image into the scanner's entire tonal space, which resulted in imaging more detail.
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Below, same as previous, but scanned at 2700 dpi.
The drum scanner version. Detail in lower-right jumps out. |