Canon 1D X III has a
20.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Digic X processor. On the other hand, Canon R6 II has a
24.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Digic X processor.
Below you can see the 1D X MIII and R6 II sensor size comparison.
Sensor Size and Resolution Comparison image of Canon 1D X III and Canon R6 II Cameras
Canon 1D X III and Canon R6 II have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture. On the other hand, since Canon 1D X III has 20% larger pixel area compared to Canon R6 II, it has potential to collect more light on pixel level hence have less noise in low light / High ISO images.
Sensor size sets the circle of confusion, so it drives how much depth of field each
of these bodies gives you at a given aperture. You can calculate it exactly for the
Canon 1D X III
or the
Canon R6 II ,
including hyperfocal distance.
