Below you can see the front view size comparison of Canon R and Sony A99 II. Canon R is 7mm narrower and 6mm shorter than Sony A99 II but it is also 8mm thicker.
Canon R vs Sony A99 II - Front View
Canon R vs Sony A99 II - Top View
The chart below depicts how two cameras compare with average dimensions of the cameras in their class.
Camera Size Comparison
Select Two Cameras for Size Comparison