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JPG
Close ups -
The following pics are enlargements
of 75 x 75 pixel squares, copied out of the full size
images. They have been enlarged by a factor of 2.66
to make them 200 pixels square, and then all saved at
JPG compression of 9:1. Subsequent JPG saves (JPG saves
of JPG's !) are not actually desirable, so degredation
may be slightly enhanced. Better to always if possible
have a .BMP to work from. |
High
Res
(low compression)
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Low
Res
(excessive compression)
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High
Res
(low compression)
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Low
Res
(excessive compression)
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Notice
now how easy it is to see the disturbance through
over compression! Colors ''bleed'' away from edges,
and the ''mottling'' and ghosting type effects are
well apparent. This is NOT recoverable.
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