It’s not the newest camera around, but the Canon 1D Mk IV remains a favorite among sports and wildlife shooters. The 1.3x crop factor, 10 frames per second shooting speed, and 16.1 megapixel sensor, along with a very accurate 45-point AF system make it ideal for this type of photography. ISO performance is usable at 3200 and 6400. The AI Servo II AF uses advanced algorithms to track moving subjects with improved precision and accuracy . The Canon 1D IV captures video at 24, 25, or 30 frames per second in 1080p HD, 720p HD and 640×480 SD, but this probably isn’t the camera you want for video these days.