The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 30mm F1.4 C and the Sigma 50mm F2 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 Sigma 50mm F2 C with a length of 68mm, is 5mm shorter. On the other hand, the Sigma 50mm F2 C has a larger diameter of 70mm compared to the Sigma 30mm F1.4 C's 65mm diameter.
Below you can find a scaled side-by-side image of Sigma 30mm F1.4 C and Sigma 50mm F2 C to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 30mm F1.4 C and the Sigma 50mm F2 C Size and Weight 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, which means it is 85g (24%) lighter than the Sigma 50mm F2 C which has a weight of 350g.
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 Sigma 30mm F1.4 C has a filter size of 52mm whereas the Sigma 50mm F2 C has a 58mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 52mm filters that we recommend you to consider for the Sigma 30mm F1.4 C:
And these are the 58mm filters that we recommend for the Sigma 50mm F2 C:
Lens Mounts
Both the Sigma 30mm F1.4 C and the Sigma 50mm F2 C has the same Leica L lens mount . Some of the latest released cameras that are compatible with the Leica L lenses are Leica TL2 , Leica TL and Leica T Typ 701 .
Sigma 30mm F1.4 C is also available in the Sony E , Micro Four Thirds , Fujifilm X , Nikon Z and Canon RF mounts.
Sigma 50mm F2 C is also available in Sony E mount.
Focal Range
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.
On the other hand, the Sigma 50mm F2 C is a prime lens with fixed focal lenght of 50mm.