Descripción
ZEISS Sonnar T* 55mm F1.8 Prime for Full-Frame E-Mount
Overview
The Sony Sonnar T* FE 55mm F1.8 ZA is the lens that made a lot of people take the first full-frame E-mount bodies seriously. Seven elements in five groups, 281 g, and a reputation for resolution that has outlasted three generations of camera body.
Key features
A simple design that works
- 7 elements in 5 groups: a classic Sonnar layout, with few surfaces to scatter light.
- ZEISS T* coating, which is what keeps contrast up when there is a light source in or near the frame.
- F1.8 maximum aperture for background separation and for working indoors without pushing ISO.
Rendering
- 9-blade circular aperture: out-of-focus highlights stay round instead of turning into polygons as you stop down.
- 0.5 m minimum focus distance and 0.14x magnification.
Size
- 64.4 x 70.5 mm and 281 g with a 49 mm filter thread: a normal lens that behaves like one.
- Dust and moisture resistant construction.
Specifications
- Mount: Sony E-mount
- Format: 35mm full frame
- Focal length: 55mm
- 35mm equivalent (APS-C): 82.5mm
- Maximum aperture: F1.8
- Minimum aperture: F22
- Optical construction: 7 elements in 5 groups
- Angle of view (35mm): 43°
- Diaphragm blades: 9, circular
- Minimum focus distance: 0.5 m
- Maximum magnification: 0.14x
- Coating: ZEISS T*
- Filter diameter: 49 mm
- Dimensions (D x L): 64.4 x 70.5 mm
- Weight: 281 g
- Supplied: ALC-SH131 hood, front and rear caps, case
What it is good for
- Portraits: 55mm at F1.8 on full frame separates a face from its background.
- Low light: a stop and a third over an F2.8 zoom.
- Street and travel: a normal focal length in a lens you forget you are carrying.
- A first prime for someone moving off the kit zoom.

