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Sony a9

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Mirrorless camera

A mirrorless camera by Sony with a 24.2-megapixel full frame sensor, announced in 2017. A stacked-sensor sports camera, now a used bargain for fast action.

MakerSony
MountSony E
SensorFull frame, 36 x 24mm, crop factor 1.0
Resolution24.2 megapixels
Stabilisationin the body
Announced2017
Typemirrorless camera

Sensor size

Full frame36 × 24 mmAPS-C23.5 × 15.6 mmAPS-C crops 1.5×
Full frame against APS-C, the next size down.

Focal lengths on it

Full frame is the reference size: lenses frame as marked. A lens made for APS-C works with the camera in crop mode, framing 1.5 times tighter at fewer megapixels.

Lenses for it

Also fits, with a crop

Made for a smaller sensor: the camera crops to it.

Adapting lenses

Full-frame FE lenses work on APS-C bodies, framing 1.5 times tighter. APS-C lenses on full-frame bodies switch the camera to an APS-C crop. Canon EF lenses adapt with autofocus through adapters like the Sigma MC-11, with varying speed.

Questions people ask

Lenses for what you shoot

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See what it frames: its view at any distance and focal length, and its depth of field, drawn to scale.