Leica Tri-Elmar-M 16-18-21mm f/4 ASPH.
Compacted power
With its impressive angle of view of 107°, this lens conquers 16mm super wide-angle photography in perfect Leica M style. Due to the minimal distortion and barely perceptible field curvature, it can be recommended for highly demanding architecture photography even at the 16mm setting. The Tri-Elmar-M 16-18-21mm f/4 ASPH. unites three super wide-angle focal lengths in one compact lens.
Technical details
The ultra compact shape is achieved by two aspherical elements. A new design of the interior focusing significantly enhances the quality in the close-focus range through an adaption of the floating element principle. Brilliant depth of field can therefore be used from a distance of 0.33m for hyperfocal photography.
The essentials:
- Diagonal viewing angle: 16/18/21 mm - 107 °/100 °/92 °
- Working range: 0.5 m to infinity
- Largest scale: 16/18/21 mm - at 0.7 m 1: 38/35/30
- Number of lenses/groups: 10/7
- Length * 1: 66 mm
- Weight * 1: 335 g
- Lens hood: can be screwed on
- Filter/filter thread: E67
AT A GLANCE
- Three Focal Lengths in One Compact Lens
- Includes Widest Available Focal Length for the M System (16mm)
IN THE BOX
- 16-18-21mm Tri-Elmar-M f/4 ASPH Lens
- Hood Cap
- Rear Lens Cap M
- Lens Pouch
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Angle of view (diagonal, horizontal, vertical)
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For 35 mm and M9 (24 x 36 mm):
at 16 mm: 107°, 97°, 74° ; at 18 mm: 100°, 90°, 67° ; at 21 mm: 92°, 81°, 60°
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For digital M8/M8.2 (18 x 27 mm):
at 16 mm: 90°, 80°, 59° ; at 18 mm: 84°, 74°, 53° ; at 21 mm: 75°, 65°, 46° ; corresponds approx. to a focal length of 21/24/28 mm with 35 mm-format
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Optical design
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Number of elements/groups:
10 / 7
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Distance setting
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Focusing range:
0.5 m to Infinity, range from 0.5 to 0.7 m separated by index
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Scales:
Combined meter/feet graduation with uniform grey figures below 0.7 m
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Smallest object field:
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For full frame 35mm:
at 16 mm: 915 x 1373 mm, approx. 1:38 ; at 18 mm: 833 x 1250 mm, approx. 1:35 ; at 21 mm: 725 x 1087 mm, approx. 1:30
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For M8 digital:
at 16 mm: 688 x 1032 mm, approx. 1:38 ; at 18 mm: 626 x 939 mm, approx. 1:35 ; at 21 mm: 545 x 817 mm, approx. 1:30
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Highest reproduction ratio at 0.7 m:
at 16 mm: 1:38 ; at 18 mm: 1:35 ; at 21 mm: 1:30
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Aperture
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Setting / Function:
Preset, with click-stops, half values available
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Lowest value:
22
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Bayonet:
Leica M quick-change bayonet with 6 bit lens identification bar code for digital M models
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Filter (type):
Male thread, non-rotating and with stop for filter holder or lens hood
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Lens hood:
Screw-on type lens hood (included in delivery)
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Dimensions and weight
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Length:
Approx. 62/72 mm (with/without lens hood)
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Largest diameter:
Approx. 54 mm (53 x 58 mm with lens hood)
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Weight:
Approx. 335 g
Delivery:
Lens, lens hood can be screwed on, cover for lens hood, lens rear cover
Limited Warranty:
Leica Camera AG (‘LEICA’) provides a three-year product limited warranty for this LEICA camera valid from the date of purchase from an authorized LEICA dealer, including the accessories contained in the original packaging, which are valid for two years.
