Compare real-world fit, not spreadsheet noise.
Pick up to four products and tune the verdict around travel, hybrid work, wildlife, resale safety or pure value. GearAtlas weighs carry size, ecosystem cost, market timing and ownership risk in one calm decision surface.
Visual
Estimated
Ranked
Canon EOS R3
Full-frame / 620g
Sony A9 III
Full-frame / 620g
Workflow lens
Sony A9 III is nearly tied for travel and everyday carry.
High-confidence autofocus or action profile
Deep ecosystem flexibility
Camera size studio
Relative body dimensions
Front, back and top views are drawn from external dimensions so the size relationship stays proportional.
View
Mode
Canon EOS R3
Front view / 132 x 92mm
132 x 92 x 72mm
Sony A9 III
Front view / 132 x 92mm
132 x 92 x 72mm
Width
Height
Depth
Weight
External dimensions and carry delta
Canon EOS R3 and Sony A9 III share the same external size profile in the current data model.
Canon EOS R3
Sony A9 III
Class benchmarks
Sensor comparison
Sensor size to scale
×1 crop
×1 crop
All 2 use Full-frame sensors — sensor size is a wash here.
Decision matrix
Scores tuned for travel
Highlighted specs
Only specs that change the decision
Sensor
24MP stacked full-frame
Sensor
24MP global shutter FF
Burst
30fps
Burst
120fps
Community comparison
Owner consensus · not specsCommunity comparison appears once owners vote on these products — 6 more votes across the pair will unlock it.