Compare cameras

Sony a1 vs Sony a9 III

The Sony a1 and the Sony a9 III side by side, computed from this guide's catalogue.

Which to pick

Pick the Sony a1 if you want more resolution, for cropping and big prints (50.1 against 24.6 MP). Pick the Sony a9 III if you want a newer model (2023 against 2021), which usually means better autofocus and video and a lighter body (617 g against 737 g).

Still torn? Ask the guide about the Sony a1 and the Sony a9 III

Specs side by side

Rows that differ are in full colour; the better value is marked where one is better by any measure.
Spec	Sony a1	Sony a9 III
Maker	Sony	Sony
Mount	Sony E	Sony E
Sensor	Full frame, 36 x 24 mm	Full frame, 36 x 24 mm
Crop factor	1×	1×
Resolution	50.1 MPmore detail	24.6 MP
Stabilisation	in the body	in the body
Announced	2021	2023
Type	mirrorless camera	mirrorless camera
Weight	737 g	617 glighter
Lenses in this guide	278 for its sensor, 125 more with a crop	278 for its sensor, 125 more with a crop

Sensor size

Both sensors drawn to the same scale.

Crop factors: Sony a1 1×, Sony a9 III 1×.

What a 50mm frames like

Both have the same sensor size, so a 50mm lens frames the same on each: like 50mm on full frame.

Horizontal angle of view on each.

Lenses

Both take Sony E lenses, so a lens bought for one works on the other: 278 lenses in this guide cover both sensors.

The Sony a1: 278 Sony E lenses in this guide cover its sensor. The Sony a9 III: 278 Sony E lenses in this guide cover its sensor.