Sony E 20mm F2.8
The Sony E 20mm F2.8 is a wide-angle prime lens for the Sony E-mount, announced by Sony on April 2013.[1]
| Maker | Sony |
|---|---|
| Lens mount(s) | Sony E-mount |
| Technical data | |
| Type | Prime |
| Focus drive | Stepper motor |
| Focal length | 20mm |
| Focal length (35mm equiv.) | 30mm |
| Image format | APS-C |
| Aperture (max/min) | f/2.8 - 22.0 |
| Close focus distance | 0.20 metres (0.66 ft) |
| Max. magnification | 1:8 (0.12x) |
| Diaphragm blades | 7 |
| Construction | 6 elements in 6 groups |
| Features | |
| Manual focus override |  |
| Weather-sealing |  |
| Lens-based stabilization | |
| Aperture ring | |
| Unique features | Pancake lens |
| Application | Landscape, Street |
| Physical | |
| Max. length | 20.4 millimetres (0.80 in) |
| Diameter | 62.6 millimetres (2.46 in) |
| Weight | 69 grams (0.152 lb) |
| Filter diameter | 49mm |
| Accessories | |
| Lens hood | None |
| History | |
| Introduction | 2013 |
| Retail info | |
| MSRP | $324 USD |
Build quality
The lens itself is made of a glossy black plastic shell over plastic internals and includes a detachable pancake-style lens hood. The lens itself is colloquially referred to as a pancake lens as it is currently the thinnest lens offered for Sony E-mount.
The lens can also be adapted with a 16mm ultra-wide angle or a 12mm fisheye converter, which are both sold separately from the lens itself. Both do not allow for corrected EXIF data to be recorded to the camera while the converters are attached.
Image quality
The image quality of the lens is significantly better than that of the 16mm pancake lens, suffering mild barrel distortion and moderate vignetting. Due to compromises made to keep its physical size to a minimum, the lens is one of Sony's softer lenses