The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony 35mm F1.4 G and the Canon RF 50mm F1.2L USM for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Canon RF 50mm F1.2L USM is the longer of the two lenses at 108mm. The Sony 35mm F1.4 G with a length of 76mm, is 32mm shorter. Besides being longer, the Canon RF 50mm F1.2L USM also has a larger diameter of 90mm compared to the Sony 35mm F1.4 G's 69mm diameter.
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. Sony 35mm F1.4 G weighs 510g, which means it is 440g (46%) lighter than the Canon RF 50mm F1.2L USM which has a weight of 950g.
Filter Threads
The Sony 35mm F1.4 G has a filter size of 55mm whereas the Canon RF 50mm F1.2L USM has a 77mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 55mm filters that we recommend you to consider for the Sony 35mm F1.4 G:
And these are the 77mm filters that we recommend for the Canon RF 50mm F1.2L USM:
Lens Mounts
The Sony 35mm F1.4 G has the Sony Alpha lens mount whereas the Canon RF 50mm F1.2L USM has the Canon RF lens mount. Some of the latest released cameras that are compatible with these mounts are Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount and Canon R6 V, Canon R6 III and Canon C50 for the Canon RF Mount.
Focal Range
Sony 35mm F1.4 G is a prime lens with fixed focal lenght of 35mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
52.5mm.
On the other hand, the Canon RF 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.