The new Planar T* 50mm F1.4 ZA SSM joins the existing Distagon 24mm, Planar 85mm and Sonnar 135mm in the A-mount range of prime length optics by Carl Zeiss. Offering a fixed 50mm focal length and extra-bright F1.4 aperture, the premium lens is an ideal choice for quality-critical portraiture and low-light shooting.
Featuring 8 elements in 5 groups with two aspherical elements, the brand new optical design is optimised for superb results with Sony’s full-frame α99. Exceptional resolving power and contrast at all apertures are teamed with smooth, quiet autofocusing and a rear-focus system that maintains the same lens body length during AF. The dust- and moisture-resistant design extends the appeal of the new lens to a wide range of outdoor shooting applications.
| Sony Planar T* 50mm F1.4 ZA SSM | Sony 70-400mm F4-5.6 G SSM II | Sony DT 18-55mm F3.5-5.6 SAM II | |
|---|---|---|---|
| Principal specifications | |||
| Lens type | Prime lens | Zoom lens | |
| Max Format size | 35mm FF | APS-C / DX | |
| Focal length | 50 mm | 70–400 mm | 18–55 mm |
| Lens mount | Sony Alpha | ||
| Aperture | |||
| Maximum aperture | F1.4 | F4.0 - F5.6 | F3.5 - F5.6 |
| Aperture ring | No | ||
| Optics | |||
| Elements | 8 | 18 | 8 |
| Groups | 5 | 12 | 7 |
| Focus | |||
| Minimum focus | 0.45 m (17.72″) | 1.50 m (59.06″) | 0.25 m (9.84″) |
| Maximum magnification | 0.14 x | 0.27 x | 0.34 x |
| Autofocus | Yes | ||
| Motor type | Ultrasonic | Micromotor | |
| Full time manual | Unknown | Yes | Unknown |
| Focus method | Internal | Extending front | |
| Distance scale | Yes | No | |
| DoF scale | Yes | No | |
| Physical | |||
| Weight | 518 g (1.14 lb) | 1500 g (3.31 lb) | 222 g (0.49 lb) |
| Diameter | 81 mm (3.19″) | 95 mm (3.72″) | 72 mm (2.83″) |
| Length | 72 mm (2.83″) | 196 mm (7.72″) | 69 mm (2.72″) |
| Sealing | Yes | No | |
| Colour | Black | ||
| Zoom method | Rotary (extending) | ||
| Filter thread | 72 mm | 77 mm | 55 mm |
| Hood supplied | Yes | No | |
| Tripod collar | Yes | No | |
