It’s amazing that you can get a full-frame Nikon D-SLR for less than the cost of its flagship DX-format camera, but the D750 is a modest jack of all trades whereas the D500 is a cutting-edge action specialist. The maximum continuous shooting speed of the D750 isn’t bad, at 6.5 frames per second, but this is some way short of the D500’s flat-out performance, and the D750’s buffer can only capture 15 14-bit lossless compressed RAW files in a burst. It can’t match the D500’s speed and endurance, and the only FX camera that can is the Nikon D5, which costs three times more at £5200/$6500. continuous shooting: 6.5fps RAW: 15 shots JPEG: 100 shots buffer capacity: 100/15 shots For action photography, the D500 wins hands down. To match it with an FX camera would cost three times more!