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 24-70 F2.8 DG DN Art 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, which means it is 235g (28%) lighter than the Sigma 24-70 F2.8 DG DN Art which has a weight of 835g.
Filter Threads
The Kamlan 50mm F1.1 II has a filter size of 62mm whereas the Sigma 24-70 F2.8 DG DN Art has a 82mm 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 82mm filters that we recommend for the Sigma 24-70 F2.8 DG DN Art:
Lens Mounts
Both the Kamlan 50mm F1.1 II and the Sigma 24-70 F2.8 DG DN Art has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony ZV-E10 II, Sony A6700 and Sony FX30.
Kamlan 50mm F1.1 II is also available in the Canon EF-M , Fujifilm X and Micro Four Thirds mounts.
Sigma 24-70 F2.8 DG DN Art is also available in Leica L mount.
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 24-70 F2.8 DG DN Art has a focal range of 24-70mm and 2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 36 - 105mm.
