The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Meike 50mm f1.8 AF 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, 30% (117g) lighter than the Meike 50mm f1.8 AF's weight of 382g.
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 Meike 50mm f1.8 AF has a filter size of 58mm 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 58mm filters that we recommend you to consider for the Meike 50mm f1.8 AF:
And these are the 52mm filters that we recommend for the Sigma 30mm F1.4 C:
Lens Mounts
Both the Meike 50mm f1.8 AF 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.
Meike 50mm f1.8 AF is also available in the Sony E 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
Meike 50mm f1.8 AF is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
75mm.
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.
