The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 24mm F1.4 DG HSM A and the Kamlan 28mm F1.4 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. Sigma 24mm F1.4 DG HSM A is the longer of the two lenses at 90mm. The Kamlan 28mm F1.4 with a length of 65mm, is 25mm shorter. Besides being longer, the Sigma 24mm F1.4 DG HSM A also has a larger diameter of 85mm compared to the Kamlan 28mm F1.4's 55mm 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. Kamlan 28mm F1.4 weighs 384g, 42% (281g) lighter than the Sigma 24mm F1.4 DG HSM A's weight of 665g.
Filter Threads
The Sigma 24mm F1.4 DG HSM A has a filter size of 77mm whereas the Kamlan 28mm F1.4 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 77mm filters that we recommend you to consider for the Sigma 24mm F1.4 DG HSM A:
And these are the 52mm filters that we recommend for the Kamlan 28mm F1.4:
Lens Mounts
The Sigma 24mm F1.4 DG HSM A has the Leica L lens mount whereas the Kamlan 28mm F1.4 has the Fujifilm X lens mount. Some of the latest released cameras that are compatible with these mounts are Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount and Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount.
Sigma 24mm F1.4 DG HSM A is also available in the Canon EF , Nikon F (FX) and Sigma SA mounts.
Kamlan 28mm F1.4 is also available in Canon EF-M , Micro Four Thirds and Sony E mounts.
Focal Range
Sigma 24mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 24mm.
On the other hand, the Kamlan 28mm F1.4 is a prime lens with fixed focal lenght of 28mm which has an effective (full-frame 35mm equivalent) focal range of 42mm when used on a APS-C / DX format camera.
