Is the sigma 15mm f 1 4 dc contemporary sharp wide open?

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From Sigma 15mm f/1.4 DC Contemporary: Sigma 15mm f/1.4 DC Contemporary: A prime lens by Sigma for APS-C cameras, 15mm f/1.4. A fast wide prime for APS-C, about 22.5mm equivalent. Specs - Maker: Sigma - Focal length: 15mm (prime) - Maximum aperture: f/1.4 - Made for: APS-C sensors - Mounts: Sony E, Fujifilm X, Canon RF - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Sony E, Fujifilm X): like 22mm on full frame; f/1.4 gives about ...

From Sigma 30mm f/1.4 DC DN Contemporary: Sigma 30mm f/1.4 DC DN Contemporary: A prime lens by Sigma for APS-C cameras, 30mm f/1.4. Cheap, sharp and fast: a classic first prime for APS-C.

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