The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica TL 35mm F1.4 ASPH 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. Leica TL 35mm F1.4 ASPH is the longer of the two lenses at 77mm. The Sigma 30mm F1.4 C with a length of 73mm, is 4mm shorter. Besides being longer, the Leica TL 35mm F1.4 ASPH also has a larger diameter of 70mm compared to the Sigma 30mm F1.4 C's 65mm diameter.
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Below you can find a scaled side-by-side image of Leica TL 35mm F1.4 ASPH and Sigma 30mm F1.4 C to get a better idea of how their sizes compare in real life.
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. Leica TL 35mm F1.4 ASPH weighs 128g, which means it is 137g (51%) lighter than the Sigma 30mm F1.4 C which has a weight of 265g.
Filter Threads
The Leica TL 35mm F1.4 ASPH has a filter size of 60mm 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 60mm filters that we recommend you to consider for the Leica TL 35mm F1.4 ASPH:
And these are the 52mm filters that we recommend for the Sigma 30mm F1.4 C:
Lens Mounts
The Leica TL 35mm F1.4 ASPH has the Leica TL lens mount whereas the Sigma 30mm F1.4 C has the Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are , and for the Leica TL Mount and , and for the Micro Four Thirds Mount.
Sigma 30mm F1.4 C is also available in Sony E , Fujifilm X and Nikon Z mounts.
Focal Range
Leica TL 35mm F1.4 ASPH is a prime lens with fixed focal lenght of 35mm which has an effective (full-frame 35mm equivalent) focal range of
52.5mm when used on a APS-C / DX format camera.
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.