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Viltrox af 50mm f 2 air vs sigma 50mm f 2 dg contemporary?

Both are 50mm f/2 primes for full frame, both autofocus, and neither has stabilisation. On a full frame body they frame the same, and on APS-C they both act like a 75mm. The main practical difference is mount support. The Viltrox AF 50mm f/2 Air comes in Sony E, Nikon Z and L-Mount, so it's the one to get if you shoot Nikon Z. The Sigma 50mm f/2 DG Contemporary covers Sony E and L-Mount only.

If you're on Sony E or L-Mount, either will do the job. My site doesn't compare their image quality, size or price, so check those yourself before buying. Also, the lenses guide has a tip worth remembering: confirm your body supports the autofocus features you want with third-party glass.

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