200 pictures/slides is no problem for almost all current machines.  However,
if each pictures is kept at full resolution (5 MB or so) that makes for a
very large presentation.  I would suggest that the images be optimized after
being inserted.  The optimization removes the un-show-able details from the
images and keeps the size of the presentation reasonable.
Just as an example.  A decent digital camera will capture an image at 3000
pixels by 2000 pixels or better.  However, most projectors can only display
at 1024 by 768.  Therefore only about 15% of the pixels are actually useful
to the presentation projection.  Optimization removes the excess detail and
keeps the presentation size manageable.
--
Bill Dilworth
A proud member of the Microsoft PPT MVP Team
Users helping fellow users.
http://billdilworth.mvps.org
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