Re: [lens] JPEG vs GIF vs PNG

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Dear Jerry,

GIF only has 256 different colours.
PNG has lossless compression. 
I suggest PNG.

tOM

On Wednesday, April 07, 2004 at 11:08,
Jerry McCown <photoforum@xxxxxxxxxxxxxxxxxxxxxx> wrote:

> Hello all;
> 
> I produce training presentations in Microsoft PowerPoint and have just
> noticed that my photos in the presentations are not as sharp as when
> they were originally inserted.  Since I use JPEGs to reduce file size,
> and edit the presentations on a continuos basis, apparently every time I
> save the presentation, I am also saving the JPEGs and detail is lost. Do
> any of you know if my analysis is correct?  Anytime a PowerPoint
> presentation is saved each JPEG in the presentation will lose some
> pixels?
> 
> If I find that I will need to turn to a 'non-lossy' format, is the
> recommendation to go to GIF, PNG, or some other format?
> 
> Thanks in advance for any assistance.
> 
> 
> 



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