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Sony a9 vs Sony a9 II

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

Which to pick

Pick the Sony a9 II if you want a newer model (2019 against 2017), which usually means better autofocus and video. On these specs the Sony a9 has no clear advantage: choose it if the price, the handling or a lens you own decides it.

Still torn? Ask the guide about the Sony a9 and the Sony a9 II

Specs side by side

Rows that differ are in full colour; the better value is marked where one is better by any measure.
SpecSony a9Sony a9 II
MakerSonySony
MountSony ESony E
SensorFull frame, 36 x 24 mmFull frame, 36 x 24 mm
Crop factor1×1×
Resolution24.2 MP24.2 MP
Stabilisationin the bodyin the body
Announced20172019
Typemirrorless cameramirrorless camera
Weightnot listed678 g
Lenses in this guide278 for its sensor, 125 more with a crop278 for its sensor, 125 more with a crop

Sensor size

Both camerasFull frame36 × 24 mmCrop factor 1×
Both sensors drawn to the same scale.

Crop factors: Sony a9 1×, Sony a9 II 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.

50mm on either · 40°
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 a9: 278 Sony E lenses in this guide cover its sensor. The Sony a9 II: 278 Sony E lenses in this guide cover its sensor.

On their own pages