Scanning question (Is destruction of old tech docs a moral crime?)

Paul Koning paulkoning at
Mon Jul 22 13:52:42 CDT 2019

> On Jul 21, 2019, at 6:20 PM, Jon Elson via cctalk <cctalk at> wrote:
> On 07/21/2019 04:48 PM, ben via cctalk wrote:
>> It is not the DPI that is problem on some scans, but they used
>> a LOSSY format to store the data. JPEG IS NO!
> Yes, ABSOLUTELY!  JPEG is designed for things that have smooth tones, like people and outdoor photographs.  It is horrible with anything that has sharp contrasts like letter outlines and line drawings.

Furthermore, it is utterly unfit as a storage format for files being edited (since every save/reopen loses more detail).  It's just barely tolerable as a source file format in digital cameras, and it's of course appropriate as a final format for continuous tone photo-like images.

It's always amazing to see ignorant "graphic artists" uses JPEG for corporate logos.  Those go into the "you get what you pay for" bucket.


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