shutter speed has to be 1/2000s and above, remember to shoot with a open door or window, so you may have a clearer view, you also need to use one hand hold the camera, one hand hold to the lens, another two hands hold on the seat.
mine see perfectly under most light conditions, has no problem with strong backlight, dim light conditions, vast differences bet hi-tones and low-tones, does not run on batt, auto-focus perfectly, even better than USM, perfect colour saturation. Aperture? How does 1 sound? No need to spend a single cent some more, built-in IS technology,
How can evolution ever produce such a masterpiece?