PHRubin wrote:
1024 X 768 is rather few pixels for a photo. To reduce a photo to this size it must start out with the same "aspect ratio", which is 4:3 for that number of pixels. This is not necessarily as the photo was taken. If not, you must trim the original before you reduce it.
The OP said this was for digital display at his camera club. If using a projector whose display is 1024x768, the images will look fine. Anything larger will be reduced to 1024x768. Printing would be a different issue.