Canon Battery Pack BP-300. That's easy. The EOS-1V is in a totally different class by itself. Yes, the EOS 30/33 models are capable of capturing GP riders and other fast-moving subjects but the pro version has a shorter shutter time-lag and is able to get more shots in the same time frame, as illustrated by this 10-frame sequence shots of the same 500cc rider. These photos were part of a 15-frame sequence that were shot in AI Servo AF mode of the EOS-1V utilizing the EF 300mm f/2.8L IS USM w/Extender EF 2x and PB-E2 fitted with Ni-MH Pack NP-E2. First Second     Third Fourth     Fifth Sixth     Seventh Eighth     Ninth Tenth As mentioned in the previous page, the main function of the BP-300 is to enable owners of the EOS 30/33 cameras to choose between using two CR123A (lithium) and four AA-size alkaline batteries, and it has nothing to do with boosting the built-in firing rate capabilities of both models. In addition, it also allows photographers with large hands to have a better grip overall as both the EOS 30/33 models are rather compact to hold without the BP-300 attached. It also has a vertical shutter release and AE Lock buttons. The vertical AE Lock button is useful if you have set the camera's Custom Function CF-4 to enable AF start function instead of the shutter button. Text and photos by Philip Chong. Copyright 2001 by Canon Marketing (M) Sdn Bhd << Back to Main . 1 . 2 .