For me the benefit is mostly tactile and muscle memory. I find the diaphragm ring / shutter dial easier and faster to turn, then to dial in exposure comp. Seco

For me the benefit is mostly tactile and muscle memory. I find the diaphragm ring / shutter dial easier and faster to turn, then to dial in exposure comp. Secondly if you shoot in a static environment, you set up your camera once, and then just focus on what you want to shoot.