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 F2.8 DN 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 F2.8 DN weighs 135g, 68% (293g) lighter than the Leica TL 35mm F1.4 ASPH's weight of 428g.
Lens Mounts
The Leica TL 35mm F1.4 ASPH has the Leica L lens mount whereas the Sigma 30mm F2.8 DN has the Micro Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are , and for the Leica L Mount and , and for the Micro Four Thirds Mount.
Sigma 30mm F2.8 DN is also available in Sony E mount.
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 F2.8 DN 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.
