The 50mm F1.4 DG HSM is a premium 'normal' prime designed for Leica and Panasonic camera that use the L-mount. Not to be confused with the older 50mm D1.4 EX DG HSM, it's a completely new lens with a complex optical formula of 13 elements in 8 groups, and a minimum focus distance of 40cm. As part of the 'Global Vision' line it's also compatible with Sigma's USB dock and Mount Conversion Service. On APS-C / FX SLRs it acts like a 75mm short telephoto lens.
Principal specifications | ||
---|---|---|
Lens type | Prime lens | |
Max Format size | 35mm FF | |
Focal length | 50 mm | |
Image stabilization | No | |
Lens mount | L-Mount | |
Aperture | ||
Maximum aperture | F1.4 | |
Minimum aperture | F16 | |
Number of diaphragm blades | 9 | |
Optics | ||
Elements | 13 | |
Groups | 8 | |
Special elements / coatings | SLD glass elements, aspheric elements | |
Focus | ||
Minimum focus | 0.40 m (15.75″) | |
Maximum magnification | 0.18× | |
Autofocus | Yes | |
Motor type | Ring-type ultrasonic | |
Full time manual | Yes | |
Focus method | Internal | |
Focus notes | Floating focus system | |
Distance scale | Yes | |
DoF scale | Yes | |
Physical | ||
Filter thread | 77 m |