This image was scanned at 600 dpi optical on a Microtek Scanmaker III with TMA. This size is 778 x 504, and is the maximum possible size I could get from the 35 mm slide. The edges were not quite straight, and were cropped just enough to be straight. It is shown full size so that you can judge the size. It is large enough for many purposes, but probably not for printing. Printing it at 150 dpi would give 5.2 x 3.4 inches. It would be half these dimensions if scanned at 300 dpi.
This is a central portion of the same slide scanned at 1950 dpi on a Microtek 35t Plus film scanner. The full image was 2600x1800.