PNG is a net standard and very suitable for photos or graphics. See http://www.devx.com/projectcool/Article/19997/0/page/3 and http://www.libpng.org/pub/png/ You should resize your TIFFs, PNGs or JPGs to fit the size you will use to display them. Resizing is always best done in a photo editor rather than presentation software or, much worse, in the projector. Always use the projector's native resolution for best results. The other suggestion, to replace the JPEGs after the presentation is completed is also good. Plain copies of the PPT won't affect the quality. BMP works well, but is huge. There are some versions of BMP that do some compression but aren't as well supported. tOM On Friday, April 09, 2004 at 16:30, Jerry McCown <photoforum@xxxxxxxxxxxxxxxxxxxxxx> wrote: > Tom, > > Thank you for your reply. I'm still tossing it around and may just > downsize TIFF as much as possible as I'm hearing that PNG isn't 'good > for photos.' Thanks again for your input. > > - Jerry > > Tom Trottier wrote: > > > 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. > > > > > > > > > > > > > ------- Quidquid latine dictum sit altum viditur ------- > > ,__@ tOM Trottier +1 613 231-6115 > > _-\_<, 758 Albert St.,Ottawa ON Canada K1R 7V8 > > (*)/'(*) N45.412 W75.714 > > <a href="http://Abacurial.com";>Abacurial Information Architecture</a> > > --------------- I would rather be exposed to the inconveniences > > attending too much liberty than to those attending too small a degree > > of it. -Thomas Jefferson 1743-1826) > > > ------- Quidquid latine dictum sit altum viditur ------- ,__@ tOM Trottier +1 613 231-6115 _-\_<, 758 Albert St.,Ottawa ON Canada K1R 7V8 (*)/'(*) N45.412 W75.714 <a href="http://Abacurial.com";>Abacurial Information Architecture</a> --------------- I would rather be exposed to the inconveniences attending too much liberty than to those attending too small a degree of it. -Thomas Jefferson 1743-1826)
