Compatibility Check: Is Sony a9 III and Sigma 10-18mm F2.8 DC DN compatible?

Below you will find your chosen camera and lens with a short product summary. Further down you will see details around their compatibility, if they are compatible or not.

Sony a9 III
Sony a9 III

Released: 2023
Camera Type: Mirrorless
Sensor: Full frame
Resolution: 25,2 Megapixels
6000 x 4000 pixels

Sigma 10-18mm F2.8 DC DN
Sigma 10-18mm F2.8 DC DN

Released: 2023
Focal Length: 100-18 mm
Aperture: f/2,8
Image Stabilization: No
Weight: 260 gram

Can you combine these two?

Last updated: September 2024

This is the short answer:

The camera and lens you have chosen might work but in a cropped mode since the lens is constructed for a smaller APS-C sensor.

Cropped Mode and Lower Resolution

This lens has focal length:
100-18 mm

You will experience:
150-27 mm

Using a lens constructed for an APS-C sensor can result in the resolution being lower than the 25,2 MP that the Sony a9 III has.

Focal Length

The Sony camera has a sensor of type Full frame which means that your experienced Focal length will be the same as the lens specification tells us.

This lens has focal length:
100-18 mm

Since Sony a9 III does not have a Full Frame sensor the experienced focal length you will experience will be:
150-27 mm

Total weight

When you are looking at a combination of a camera and a lens you must always consider the total weight. Each product weighs in at:

Sony a9 III
617 gram

Sigma 10-18mm F2.8 DC DN
260 gram

Together they have a total weight of 877 gram (equal to 1.93 lb).

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Validation Status: Valid
Valid Camera: Yes
Valid Lens: Yes
Compatible: 3
Compatibility Check ID: 3303

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