The Leica Summicron-R 90 mm f/ 2 -is a compact, fast, medium prime lens for Leica R film cameras.
The construction is equipped with a built-in hood.
It came in two variants:
Earlier: the Leica Summicron-R 90 mm f/ 2
Later: the Leica APO-Summicron-R 90 mm f/ 2 ASPH
It is an excellent portrait lens with a simple optical scheme. Its optical scheme includes apochromatic correction (in the final version) и aspherical lenses. Two out of five elements have a high refraction coefficient, the rest are made of glass with anomalous and partial dispersion. There's no splicing and grouping of the lenses.
The lens has high resolution, which does not fall towards the frame edges. Meantime the image formed is very plastic and voluminous.
Contrast varies from medium at open apertures to high at closed apertures.
It produces beautiful bokeh and natural color rendering.
Vignetting, distortion and chromatic aberration are almost invisible.
Fast lens speed of the Leica Summicron-R 90 mm f/ 2 makes it possible to shoot in poor light condition.
It has a very reliable frame construction. The movement of the rings is soft and smooth.
When used with the LEICA APO-EXTENDER-R 2x, this lens becomes telephoto lens with focal length 180 mm and lens speed of f/4.
By means of adapters it can be easily used on modern SLR and mirrorles cameras.
The Leica Summicron-R 90 mm The Jupiter-2 is fit for portrait and artistic photography of various genres.
The table of depth of field:
Links to online resources:
Posted by: Sergei Borodin Date of publication: 16.12.2010