Sigma is releasing six APS-C lenses for Canon EOS RF mount, thus widening the choice of glass for the previously ‘closed’ RF system. First to hit the market is the Sigma DC DN 18-50mm, available from July, equivalent to 29-80mm on Canon APS-C bodies.

Later this year, Sigma will release the DC DN 10-18mm F2.8 wide-angle zoom, followed by four prime lenses, each with a fast F1.4 maximum aperture – the 16mm, 23mm, 30mm and 56mm.

‘Algorithms including AF drive and communication speed optimisation have been developed specifically for Canon RF mount,’ said Sigma. ‘The lenses also support AF-C (continuous autofocus), in-camera aberration correction (available on supported cameras only) and in-camera image stabilisation. The mount is rubber-sealed to cater for use in a variety of environments.’

New Sigma lenses coming soon for Canon RF mount, Sigma DC DN 18-50mm
The Sigma DC DN 18-50mm for Canon RF mount will be the first lens to be released. Photo: Sigma.

One criticism of the RF mount has been the relatively small choice of lenses so it will be interesting to see if this cautious start from Canon eventually widens the pool of available glass from third-party makers. That said, a Sigma spokesperson tellingly added, ‘there is no information regarding Sigma lenses for Canon RF Mount (full-frame).’

The UK release date and pricing for the six RF-compatible APS-C lenses is to be confirmed.

Tamron is also licensing RF mount lenses. The first lens under development is the Tamron 11-20mm F/2.8 Di III-A RXD, wide-angle zoom lens for APS-C mirrorless cameras. The lens is expected to launch within 2024 but no further details are available.

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