Leica Tri-Elmar 16-18-21mm/f4.0 without WA finder
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This unique, super-wide angle for analog and digital M cameras is not a zoom, but three distinct focal lengths. Utilizing two aspherical lenses for oustanding correction of aberrations, it offers very minimal distortion even at 16mm, and is highly resistant to lens flare.
The viewfinder incorporates bright lines for 5 focal lengths: 16, 18, 21, 24 & 28mm and has parallax compensation from 0.5 m to ∞. Like the Tri-Elmar, it is highly resistant to lens flare. It comes with a spirit level with flurescent lighting and diopter compensation of +/- 3 dpt.
Focal length 16-18-21mm Filter size E67 Aperture ratio 1:4 Lens construction 10 elements, 7 groups Focus range ∝-0.5 m (0.5 m thru 0.7 m separated by index) Weight 335g