DxOMark published their test results for the Canon RF 50mm f/1.2L USM Lens. As part of Canon’s L series, it is designed for professional photographers who want a bright standard prime lens.
Canon has constructed the lens from 15 elements in 9 groups, with 2 large-diameter ground aspherical lens elements, and 1 glass-molded aspherical lens element for better image quality into the corners of the frame when the aperture is wide open.
The lens tested on the Canon EOS R, the company’s 30.3Mp full-frame mirrorless camera, and it achieved an overall score of 38. The RF 50mm f/1.2L USM compares well with Canon’s previous 50mm f/1.2 lens.
There isn’t a huge pool of f/1.2 50mm lens to compare the Canon RF 50mm f/1.2L USM against, and most of its competitors have a maximum aperture of f/1.4 or f/1.8. If optimum image quality is your major concern, then the Sigma 50mm F1.4 DG HSM A makes for a better choice, although it can’t be mounted directly on Canon’s mirrorless cameras. However, if you need the extra 1/3-stop of light, then the RF lens makes a good solid proposition that is a step up from the older Canon EF 50mm f/1.2L USM.
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