You will be able to get excellent image quality when
making PDF'S from PowerPoint.
It looks as if your settings in Acrobat are causing the
problem. Acrobat uses the last settings selected to
process files, so they may be unsuitable for your power
point files.
You need to tell Acrobat what kind of output you want, ie
viewing on a computer monitor or to send to a press to
make printing plates etc.
Acrobat is several individual applications working under a
single name; Acrobat, Distiller, Writer, Catalogue,
Capture.
Launch the Distiller application- this is the place where
settings are selected.
look at job options; for viewing on a computer
monitor, 'screen' should be selected.
Next from the dropdown menu, go to settings then job
options.
check that the following settings are set:
General Tab -
Select for the version of Acrobat Reader that your client
will be using ie 3 or 4 or 5. If you dont know, select the
highest version and supply your clients with that version
of Reader with the PDF's you will send them.
resolution - 600
optomize - enabled
Compression - Tab
quality - medium
resample - down sample @ 72 dpi
Font Tab - embed all fonts
Save these setting under a new name like POWERPOINT FILES
so you can use these in future
Ensure any fonts used are on your system when making PDF's
best of luck
Scotia