My only Rolleiflex is a 50 year old Automat, yet the dimensions and control placements are similar to the current 2.8 GX, so I'll assume my experiences transfer to those cameras. As a big man with big paws, I find the Rolleiflex ergonomics to be superb. I hold the Rollei in the palm of my right hand with the back steadied up against my body, and my right thumb curling around the shutter release. My left hand is free for the focus knob. I find my thumb to be steadier and smoother squeezing the shutter release than my forefinger. Sight - focus - exhale - squeeze.... 1/15 is possible, and 1/8 might even work on good days. Find something to brace it on, and you can go even lower. Remarkable cameras.