The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 50mm F1.2 GM and the Kamlan 50mm F1.1 II 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. Kamlan 50mm F1.1 II weighs 600g, 22% (178g) lighter than the Sony FE 50mm F1.2 GM's weight of 778g.
Filter Threads
The Sony FE 50mm F1.2 GM has a filter size of 72mm whereas the Kamlan 50mm F1.1 II has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 72mm filters that we recommend you to consider for the Sony FE 50mm F1.2 GM:
And these are the 62mm filters that we recommend for the Kamlan 50mm F1.1 II:
Lens Mounts
The Sony FE 50mm F1.2 GM has the Sony E lens mount whereas the Kamlan 50mm F1.1 II has the Canon EF-M lens mount. Some of the latest released cameras that are compatible with these mounts are Sony A9 III, Sony A7C Mark II and Sony A7CR for the Sony E Mount and , and for the Canon EF-M Mount.
Kamlan 50mm F1.1 II is also available in Fujifilm X , Micro Four Thirds and Sony E mounts.
Focal Range
Both lenses have the same focal range of
50mm but while Sony FE 50mm F1.2 GM has the fastest aperture of
F1.2, the Kamlan 50mm F1.1 II's widest aperture value is
F1.1.