Last week I posted some images showing the lack of significant visual effect on multiple savings of a jpg image. It occurred to me that I was working with an image at 480 ppi. The minimum for printing is considered to be 300 ppi, and for screen image resolution 72 ppi. I ran my exercise a second time after I reduced the original image to 72 ppi. Not only is the original degraded, the image after 50 saves is beginning to show the jpg artifact effect. Here are the images.
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| Low Res image |
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| Low Res image after 50 saves |
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| Close up Low Res Image |
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| Close up Low Res Image after 50 saves |
1 comment:
Love that you presented this ... I know that any reconfiguring/saving/etc. creates image deterioration but to actually see it is interesting (an experiment I have thought about but never followed through). Guess I think like my dad!
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