The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 19mm F2.8 DN and the Canon 50mm f1.2L USM for their suitability to various photography scenarios:
Size and Weight Comparison
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Sigma 19mm F2.8 DN weighs 140g, which means it is 440g (75%) lighter than the Canon 50mm f1.2L USM which has a weight of 580g.
Lens Mounts
The Sigma 19mm F2.8 DN has the Micro Four Thirds lens mount whereas the Canon 50mm f1.2L USM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are , and for the Micro Four Thirds Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Sigma 19mm F2.8 DN is also available in the Sony E mount.
Focal Range
Sigma 19mm F2.8 DN is a prime lens with fixed focal lenght of 19mm which has an effective (full-frame 35mm equivalent) focal range of
28.5mm when used on a APS-C / DX format camera.
On the other hand, the Canon 50mm f1.2L USM is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 80mm.
