RE: [WinMac] cross platform graphics

Thomas Roth(tomroth[at]wfubmc.edu)
Thu, 8 Oct 1998 09:01:37 -0400

>>From: Thomas Roth [tomroth@wfubmc.edu]
>>But, another question I have is why does PPT not respect the size of the
>>image file being imported? Many times when I import a TIF or JPG that's
>>been sized to say 4"x6" at 300dpi in Photoshop the image once imported into
>>PPT is much larger and I have to shrink it down to get it back to the 4"x6"
>>size.

From: Landis Arnold <landisa@ibm.net>
>Re the sizing issue, I don't have PPT, but none the less it seems that
>Power Point is assuming that the file is set for Screen Presentation and is
>therefore making it scal to 72 DPI. In my understanding the relative
>"size" in inches, and the "size" in DPI, are pretty much relative... and
>that the real measurement of most pictures are the "pixels" themselves. If
>a file is 36 DPI and measures 2" x 2" on a screen, my guess is that PP
>would scale it up to 72 DPI and drop it down to about 1 x 1"... Most Web
>Graphics and "Screen Graphics" in general do not need to have more dpi than
>72 if built right.. We usually use more DPI because of printing needs where
>fundamental resolution rather than display speed are important.
>My thoughts about it anyway.

That's probably what's it's doing as I'm using putting in higher rez photos
to go to slides and thus am always having to scale the image down within
PPT but the resolution is there so the slides look good. Most "real"
graphics programs (like Freehand or PageMaker for example) don't mess with
the file that's imported but respect whatever size you have it at.

And your guess it probably right in that PPT is working with the idea of an
on-screen presentation where 72dpi is the norm. Still, it shouldn't do
that!

 ______________________________________________________________________
 Tom Roth Wake Forest University School of Medicine
 tomroth@wfubmc.edu Dept of Biomedical Communications
 Tel 336.716.4493 Medical Center Blvd
 Fax 336.716.2808 Winston-Salem, NC 27157-1011
 ______________________________________________________________________

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This archive was generated by hypermail 2.0b2 on Thu Oct 08 1998 - 06:10:57 PDT