Use full screen mode for the best quality. In this case, our photos 3:2 (900x600 px) fit well to 1024x768 px monitors (panoramic photos have 730 pixels of height).
Otherwise, Highslide JS reduces images to browser’s window size and button appears in active mode above the photo (the cursor should be placed on the photo). This button serves, as well as the key f (except Opera), to enlarge the image to its real size.