Yongnuo yn50mm f 1 8 df dsm vs meike 50mm f 1 8 stm?

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From Yongnuo YN50mm f/1.8 DF DSM: Yongnuo YN50mm f/1.8 DF DSM: A prime lens by Yongnuo for Full frame cameras, 50mm f/1.8. Specs - Maker: Yongnuo - Focal length: 50mm (prime) - Maximum aperture: f/1.8 - Made for: Full frame sensors - Mounts: Sony E, Nikon Z - Stabilised: no - Autofocus: yes What it frames like - On full frame (Sony E, Nikon Z): as marked, 50mm. - On APS-C (Sony E, Nikon Z): like 75mm on full frame; f/1.8 ...

From Meike 50mm f/1.8 STM: Meike 50mm f/1.8 STM: A prime lens by Meike for Full frame cameras, 50mm f/1.8. Specs - Maker: Meike - Focal length: 50mm (prime) - Maximum aperture: f/1.8 - Made for: Full frame sensors - Mounts: Sony E, Nikon Z, L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (Sony E, Nikon Z, L-Mount): as marked, 50mm. - On APS-C (Sony E, Nikon Z, L-Mount): like 75mm on ...

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