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Used on the digital M8, it produces the image effect of a 21 - 28 mm lens, still enabling extreme wide-angle views. 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 field depth can therefore be used from a distance of 0.33 m for hyperfocal photography.
|Angle of view diag/horiz/vert|
|for 35 mm (24 x 36 mm):||at 16 mm: 107°, 97°, 74°
at 18 mm: 100°, 90°, 67°
at 21 mm: 92°, 81°, 60°
|for digital (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
|Optical design||Number of elements / groups: 10 / 7|
|Focusing range:||0.5 m to Infinity, range from 0.5 to 0.7 m separated by index|
|Scales:||Combined meter/feet graduation with uniform grey figures below 0.7 m|
|Smallest object field: for 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
|Smallest object field: for 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
|Highest reproduction ratio: at 0,7 m||at 16 mm: 1:38
at 18 mm: 1:35
at 21 mm: 1:30
|Setting / Function:||Preset, with click-stops, half values available|
|Bayonet||Leica M quick-change bayonet with 6 bit lens identification bar code for digitalM models|
|Filter (type)||Male thread, non-rotating and with stop for filter holder or lens hood|
|Lens hood||screw-on type lens hood (included in delivery), filter holder for E67 size filters optionally available|
|Dimensions||Length: approx. 62/72 mm (with/without lens hood)
Largest diameter: approx. 54 mm (53 x 58 mm with lens hood)
|Weight||approx. 11.8 oz / 335 g|
Questions & Answers
Leica 16-18-21mm f/4.0 Tri-Elmar-M ASPH Wide Angle Lens
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