The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Brightin Star 35mm f1.4 and the Sigma 30mm F1.4 C 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 30mm F1.4 C is the longer of the two lenses at 73mm. The Brightin Star 35mm f1.4 with a length of 43mm, is 30mm shorter. Besides being longer, the Sigma 30mm F1.4 C also has a larger diameter of 65mm compared to the Brightin Star 35mm f1.4's 64mm 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. Brightin Star 35mm f1.4 weighs 224g, which means it is 41g (15%) lighter than the Sigma 30mm F1.4 C which has a weight of 265g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Leica L Mount for size comparison purposes.
Standard Lenses in Leica L Mount for Size Comparison
Filter Threads
The Brightin Star 35mm f1.4 has a filter size of 43mm 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 43mm filters that we recommend you to consider for the Brightin Star 35mm f1.4:
And these are the 52mm filters that we recommend for the Sigma 30mm F1.4 C:
Lens Mounts
Both the Brightin Star 35mm f1.4 and the Sigma 30mm F1.4 C has the same Leica L lens mount. Some of the latest released cameras that are compatible with the Leica L lenses are Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE.
Brightin Star 35mm f1.4 is also available in the Sony E , Canon RF and Nikon Z mounts.
Sigma 30mm F1.4 C is also available in Sony E , Micro Four Thirds, Fujifilm X, Nikon Z and Canon RF mounts.
Focal Range
Brightin Star 35mm f1.4 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 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.
