The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Kamlan 50mm F1.1 II and the Sigma 30mm F1.4 C 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 30mm F1.4 C weighs 265g, 55% (335g) lighter than the Kamlan 50mm F1.1 II's weight of 600g.
Filter Threads
The Kamlan 50mm F1.1 II has a filter size of 62mm whereas the Sigma 30mm F1.4 C has a 52mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 62mm filters that we recommend you to consider for the Kamlan 50mm F1.1 II:
And these are the 52mm filters that we recommend for the Sigma 30mm F1.4 C:
Lens Mounts
The Kamlan 50mm F1.1 II has the Sony E lens mount whereas the Sigma 30mm F1.4 C has the Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount and , and for the Micro Four Thirds Mount.
Kamlan 50mm F1.1 II is also available in the Canon EF-M , Fujifilm X and Micro Four Thirds mounts.
Sigma 30mm F1.4 C is also available in Sony E , Fujifilm X, Nikon Z, Leica L and Canon RF mounts.
Focal Range
Kamlan 50mm F1.1 II is a prime lens with fixed focal lenght of 50mm which has an effective (full-frame 35mm equivalent) focal range of
75mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 30mm F1.4 C is a prime lens with fixed focal lenght of 30mm which has an effective (full-frame 35mm equivalent) focal range of 45mm when used on a APS-C / DX format camera.
