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This
is a higher resolution and larger version of the main
image being used for illustrative purposes. The statistics
here are-
550 x 398 pixels, 24 bit RGB color, 642k in memory and
50k on disk (12:1 compression) - total pixel count is
218,900 and original resolution 240. Format
progressive .JPG, with
YUV 4,4,4 subsampling algorithm. |
This picture, although
compressed almost as much as the small version, has
the advantage of containing 7.5 times as many pixels,
or "information dots" - and so is showing
much more detail. The figure of 7.5 would also equate
to the increase in file size over the small one, had
we compressed 15:1 - showing the relationship between
pixels and file size.
The original I should point out was a mere 6 x 4 print
which had to be scanned and so resolution was not all
that good, compared with a high resolution digital original. |
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