Comparable JPEG Quality

E
Posted By
eastside
Aug 25, 2006
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244
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1
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Closed
In PS, 1.) File, Save as… and 2.) File, Save for Web… are two methods of writing JPEG images. For quality method 1 has a scale of 0 to 12. Method 2 goes from 0 to 100. Is the correlation between the two scales linear? If I’ve created an image using one method I’d like to ensure that the quality will be the same if using the other.

Thanks!
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Andrew Morton
Aug 29, 2006
eastside wrote:
In PS, 1.) File, Save as… and 2.) File, Save for Web… are two methods of writing JPEG images. For quality method 1 has a scale of 0 to 12. Method 2 goes from 0 to 100. Is the correlation between the two scales linear?

I think that the scale for your method 1 actually goes from 0 to 10 while 11 and 12 change the sampling frequency for the colour component; i.e. method 1 quality 10 is method 2 quality 100. I could be wrong.

Andrew

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