I have a couple of questions about using PowerPoint to create a very high quality presentation of my work for projection in a large lecture hall/auditorium.
I am presenting some of my electron micrographs (mostly 8-bit grayscale tiffs, but about a dozen 24 bit color tiffs as well) in slide show format at an upcoming meeting in Berlin, and I need these micrographs to look as good as possible projected on a large screen. Obviously, the gold standard for print is 300ppi, but I really have no idea what resolution (i.e., pixel dimensions) is sufficient for this purpose. The original micrographs are about 2500 x 1700 pixels, but, in the name of keeping the file size manageable (60+ images), I am converting from tif to jpg, and would like to downsample a bit. Will downsampling to a maximum dimension of 1600 px result in any loss in quality? What about 1200 px? What should I aim for here?
Also, these slides will be accompanied by various music (Alice Coltrane, Beethoven, Morton Feldman), and I would like to just convert the whole thing into some sort of video format so that the whole thing will run automatically, and I will not have to advance the slides manually. How can I convert the Powerpoint to video format?