More Presenter Tips
So, if you are going to add photos to your presentation, don't make a beginner mistake of taking the photos "as is" right from the camera and plopping them onto a slide. These photos are each about 7 MB in size so lots of photos can easily crash your presentation if you do not have the latest and greatest computer to display them. Your best bet is to optimize your photos prior to inserting them -- but -- if you have already added them to the slides, all is not lost. You can compress one or all of the photos with a feature that is in PowerPoint since the 2002 version.
I did a sample test to see the actual difference in the file size of the end product. I created a digital photo album, containing 9 photos. Prior to compressing all the photos, the file size was 15 MB. A few quick clicks later, and the file size was down to 2.91 MB. Very impressive.
Compress Photos in PowerPoint 2010
Compress Photos in PowerPoint 2007
Compress Photos in PowerPoint 2003
See also ~
Optimize Photos to Use in Presentations
9 Tips to Jazz Up Your Digital Photo Albums
Troubleshoot PowerPoint Photo Albums