Suppose you own a Nikon D500 (DX crop body) and want a 200-500mm lens. The catalogue’s “Compatible Accessories” note will tell you whether the lens’s VR (vibration reduction) syncs with the camera’s electronic shutter or if you need a tripod collar. That detail is often missing from video reviews.
Nikon catalogues almost always contain a "System Compatibility Chart" towards the back. This is gold dust for photographers mixing old and new gear. It tells you: nikon camera catalogue pdf