The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Laowa 12-24mm f5.6 Shift 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, 41% (240g) lighter than the Laowa 12-24mm f5.6 Shift's weight of 575g.
Below you can find the dimension and weight table of the Wideangle Zoom Lenses in Leica M Mount for size comparison purposes.
Ultra-Wideangle Lenses in Leica M Mount for Size Comparison
Lens Mounts
Both the Laowa 12-24mm f5.6 Shift and the Leica Tri-Elmar-M 16-18-21mm f4 ASPH has the same Leica M lens mount. Some of the latest released cameras that are compatible with the Leica M lenses are Pixii+, Epson R-D1x and Epson R-D1.
Laowa 12-24mm f5.6 Shift is also available in the Sony E , Nikon Z, Canon RF, Fujifilm X and Leica L mounts.
Focal Range
Laowa 12-24mm f5.6 Shift has a focal range of 12-24mm and
2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
18-36mm when used on a APS-C / DX format camera.
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 .