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| Manufacturer | Panasonic | Olympus | Samsung | Sony |
|---|---|---|---|---|
| Model | G 20 mm f/1.7 ASPH. | M.Zuiko Digital 17 mm f/2.8 | NX 30 mm f/2.0 | E 16 mm f/2.8 |
| Lenst style | Wide angle | Wide angle | Wide angle | Wide angle |
| Focal length | 20 mm | 17 mm | 30 mm | 16 mm |
| Maximum aperture | f/1.7 | f/2.8 | f/2 | f/2.8 |
| Angle of view | 57 o | 65 o | 50.2 o | 83 o |
| Closest focusing distance | 0.2 m | 0.2 m | 0.25 m | 0.24 m |
| Maximum magnification | 1:7.5 | 1:9 | 1:6.25 | 1:12.8 |
| Minimum aperture | 16 | 22 | 22 | 22 |
| Diaphragm blades | 7 | 5 | 7 | 7 |
| Auto focus type | AF | AF | AF | AF |
| Lens Construction | 7 elements / 5 group | 6 elements / 4 group | 5 elements / 5 group | 5 elements / 5 group |
| Filter diameter | 46 mm | 37 mm | 43 mm | 49 mm |
| Macro Yes/No | No | No | Yes | No |
| Stabilization | No | No | No | No |
| Available mounts | Micro Four Thirds | Micro Four Thirds | Samsung NX | Sony E |
| Dimensions | 63 x 25.5 mm | 57 x 22 mm | 61.5 x 21.5 mm | 62 x 22.5 mm |
| Weight | 100 g | 71 g | 85 g | 67 g |
| Additional information | 2 aspherical elements | one aspherical lens | 1 aspherical element anounced Jan 2010 |
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| Score [max 5.00] | ||||
| Our Review |
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