About this item:
High Image Quality with a Back-illuminated Stacked 24.1 Megapixel Full-frame CMOS Sensor 
DIGIC X Image Processor with an ISO range of 100-102400; Expandable to 204800 
High-speed continuous shooting of up to approx. 30 fps with electronic (silent) shutter and up to 12fps with Mechanical Shutter 
Improved Dual Pixel CMOS AF with 1,053 AF Points featuring Vehicle Detection as well as Eye, Face, Head, and Animal Detection 
The First EOS Digital camera to feature Eye Control AF 
Panning Assist When Panning Assist is enabled on the EOS R3 with firmware 1.4.0 or later, subject tracking and optical image stabilization are used to detect and correct motion blur on the panned subject during exposure, leading to more keepers at slower shutter speeds. 
Registered Person Priority Selecting and enabling Registered Person Priority on the EOS R3 with firmware 1.4.0 or later allows for the recognition, prioritization, and tracking of up to 10 specific, registered people. For example, this allows a wedding photographer to ensure that the bride and groom are always tracked and in focus.