I seek advice from this august group.
I am a speaker in an upcoming photo workshop and will be faced with prepping the Keynote (Powerpoint) presentation before I know what projector will be used. The problem is that without knowing the projector, I don't know the resolution, and therefore I don't know how big to make the slides and how to prepare the images. Put another way, in an ideal world you should prep images to the native resolution of the projector, but I may not know that ahead of time.
In the "old days", I usually assumed a 1024 x 768 px resolution, resampled image to that and loaded the images into the presentation. However, many projectors today have higher resolutions, which would make a 1024 x 768 image look quite small on the screen, and you certainly don't want the projector to upsample. If I make the images bigger than most resolutions, say 2046 x 1536, then the projector will have to downsample to its resolution. Do they do a good job? Are there problems with this approach? Should I worry so much? Would the option of prepping images to 1080p resolution (1920 x 1080) be a good strategy.
I would be very grateful for anyones experience on this issue.