- In 2005 it was the 20D's joystick.
- On the 1D3, they finally gave us a dedicated [AF ON] button on the back. (yes, there ISN'T one on the 1D Mark II!)
- The 1DXIII gave us the touchy-feely AF ON button with point selection.
- The "R" made a failed attempt with the slidy bar thingy.. 
- Also, we've got great customization's, that let us program different AF set ups on two (or more) buttons.
Here's what I've been missing for years, and it never occurred to me to ask.
- 3 Stage shutter button.
The shutter button has had two stages since before AF,. half press meters, full presses releases shutter.
We need a 3 stage shutter, and we need to be able to program what happens at the 3rd stage. (or even at the first stage)
- On the R5 or R6, i would program the 3rd stage to switch from whatever shutter/drive mode the camera is currently set to, to switch to 20FPS E-shutter.
Thanks Canon. Looking forward to seeing this soon on the R1 and the R5 Mark II correct?





