The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Laowa 17mm f4 TS and the Leica Tri-Elmar-M 16-18-21mm f4 ASPH 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. Leica Tri-Elmar-M 16-18-21mm f4 ASPH weighs 335g, 58% (475g) lighter than the Laowa 17mm f4 TS's weight of 810g.
Lens Mounts
The Laowa 17mm f4 TS has the Leica L lens mount whereas the Leica Tri-Elmar-M 16-18-21mm f4 ASPH has the Leica M lens mount. Some of the latest released cameras that are compatible with these mounts are Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount and Leica M EV1, Leica M11-D and Pixii Max for the Leica M Mount.
Laowa 17mm f4 TS is also available in the Sony E , Nikon Z and Canon RF mounts.
Focal Range
Laowa 17mm f4 TS is a prime lens with fixed focal lenght of 17mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
25.5mm.
On the other hand, the Leica Tri-Elmar-M 16-18-21mm f4 ASPH has a focal range of 16-21mm and 1.3X zoom ratio .
