The 90mm Summicron lens exhibits minimal light fall-off, and its fast aperture allows for shorter exposure times, even in low-light conditions. This helps reduce camera shake, making it perfect for capturing street scenes from afar. As a result, the APO-Summicron-M 90mm f/2 ASPH. is an excellent choice for photojournalism, theater photography, and portrait work.
| Angle of view (diagonal, horizontal, vertical) | 27°, 23°, 15° |
|---|---|
| Number of lenses/groups | 5 / 5 |
| Focal length | 90.9 mm |
| Position of entrance pupil | 58.6 mm (related to the first lens surface in light direction) |
| Focusing range | 1 m to Infinity |
| Scales | Combined meter/feet graduation |
| Smallest object field | 220 mm x 330 mm |
| Largest reproduction ratio | 1:9 |
| Aperture Setting/Function | With click-stops, half values available, manual diaphragm |
| Lowest aperture value | 16 |
| Bayonet | Leica M quick-change bayonet with 6 bit lens identification bar code for digital M models |
| Filter mount | Internal thread for screw-in type filters E 55 |
| Lens hood | Built-in, telescopic |
| Length | 78 mm |
| Diameter | 64 mm |
| Weight | Approx. 500 g |
The Apo-Summicron 90mm f/2 ASPH. is the first lens to combine apochromatic color correction with an aspherical lens element.
Among its optical components, two are crafted from high-refractive-index glass, while another two feature anomalous partial dispersion.
Its exceptional sharpness and resolution are outstanding, even when used at maximum aperture.
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