Leica has just officially announce the Leica APO-Summicron-SL 50 mm f/2 ASPH lens. It is a bright prime lens designed for full-frame L-mount mirrorless cameras. The f/2 maximum aperture balances speed with overall weight and size, resulting in a portable form factor that can excel in available light conditions. This new lens costs $4,495, first available for pre-order at B&H/ Adorama.
Key feature:
- Normal-length 50mm f/2 lens is designed for full-frame Leica L-mount mirrorless cameras, however can also be used with APS-C models where it provides a 75mm equivalent focal length.
- Bright f/2 maximum aperture benefits working in low-light conditions and also affords greater control over depth of field for working with selective focusing techniques.
- Three aspherical elements are used to reduce distortion and spherical aberrations for improved sharpness and accurate rendering.
- Apochromatic design employs anomalous partial dispersion glass to suppress chromatic aberrations throughout the aperture range for increased color accuracy and clarity.
- Multi-layer coatings have been applied to individual elements to suppress surface reflections, flare, and ghosting for increased contrast and color fidelity.
- Dual Syncro Drive stepping motor delivers quick, precise, and near-silent autofocus performance to suit both photo and video applications. This system also avails full-time manual focus override.
- Water-repellent AquaDura coating has been applied to the front and rear optical surfaces to protect against moisture and other elements.
- Weather-sealed design protects against dust and moisture to benefit working in inclement shooting conditions.
Below are the detailed specifications:
| Principal specifications | ||
|---|---|---|
| Lens type | Prime lens | |
| Max Format size | 35mm FF | |
| Focal length | 50 mm | |
| Image stabilization | No | |
| Lens mount | Leica SL | |
| Aperture | ||
| Maximum aperture | F2 | |
| Minimum aperture | F22 | |
| Aperture ring | No | |
| Optics | ||
| Elements | 12 | |
| Groups | 10 | |
| Special elements / coatings | 3 aspherical elements, AquaDura coating | |
| Focus | ||
| Minimum focus | 0.35 m (13.78″) | |
| Maximum magnification | 0.2× | |
| Autofocus | Yes | |
| Motor type | Stepper motor | |
| Full time manual | Yes | |
| Focus method | Internal | |
| Distance scale | No | |
| DoF scale | No | |
| Physical | ||
| Weight | 740 g (1.63 lb) | |
| Diameter | 73 mm (2.87″) | |
| Length | 102 mm (4.02″) | |
| Sealing | Yes | |
| Filter thread | 67 mm | |
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