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| One of these images has just 100th the color information of the other |
We looked at how JPEG works. That was hard work.
Using Photoshop and Lab channels we simulated subsampling of the chrominance channel to see just how much one can get away with.
We looked at the effects of adjusting the quality settings of JPEGs in Photoshop's Save for Web preview.
A good day's work.
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