Configured for ultra-wide photography with an M-mount rangefinder camera, the Tri-Elmar-M 16-18-21mm f/4 ASPH. Lens with Universal Wide-Angle Viewfinder from Leica bundles the uniquely versatile three-focal-length lens with the Universal Wide Angle Viewfinder for making more accurate compositions with each focal length position.
A uniquely versatile super-wide lens, the Tri-Elmar-M 16-18-21mm f/4 ASPH. from Leica allows you to work with three separate focal lengths within one lens. The optical design, which includes a pair of aspherical elements, notably reduces distortion for clean, accurate rendering of interior and architectural subjects, and the aspherical elements also promote a more compact form factor. Seamless switching between 16mm, 18mm, and 21mm focal length positions is possible while retaining a minimum focusing distance of 1.6', and a floating elements design is used to maintain image quality even at close range.
The Leica Universal Wide-Angle Viewfinder M is a shoe-mounted external viewfinder for M-system rangefinder cameras (including M8). This viewfinder offers bright-line frames to match the 16-18-21mm lens. Since the 1.33x conversion factor has to be considered for the M8 digital camera, bright-lines for 21, 24, and 28mm are also included. It can also be used with other fixed lenses that match this range. A parallax compensation dial allows for adjustment of the frame to the focusing distance, in five steps (0.5, 0.7, 1, 2 meter & infinity).
The use of one aspherical lens element and one with achromatic correction in the viewfinder makes it insensitive to stray light, and provides a high resolution and exceptional brilliance image.
Focal Length | 16mm 18mm 21mm |
Aperture | f/4 to f/22 |
Camera Mount Type | Leica M |
Angle of View | 16mm: 107° 18mm: 100° 21mm: 92° |
Minimum Focus Distance | 1.6' / 50 cm |
Reproduction Ratio | 16mm: 1:38 18mm: 1:35 21mm: 1:30 |
Optical Design | 10 elements in 7 groups |
Diaphragm Blades | Not specified by manufacturer |
Focus | Manual |
Filter Thread | N/A (male thread to accept included lens hood or optional 67 mm filter holder) |
Dimensions | 2.1 x 2.4" / 54 x 62 mm |
Weight | 11.8 oz / 335 g |
Package Weight | 1.26 lb |
Box Dimensions (LxWxH) | 5.85 x 5.35 x 4.7" |
Package Weight | 0.57 lb |
Box Dimensions (LxWxH) | 4.7 x 4.6 x 2.85" |