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| Manufacturer | Sigma | Pentax | Samsung | Sony |
|---|---|---|---|---|
| Model | 30 mm f/2.8 EX DN | smc DA 40 mm f/2.8 XS | NX 30 mm f/2.0 | E 30 mm f/3.5 Macro |
| Lenst style | Wide angle | Telephoto | Wide angle | Wide angle |
| Focal length | 30 mm | 40 mm | 30 mm | 30 mm |
| Maximum aperture | f/2.8 | f/2.8 | f/2 | f/3.5 |
| Angle of view | 50.6 o | 39 o | 50.2 o | 50.6 o |
| Closest focusing distance | 0.3 m | 0.4 m | 0.25 m | 0.1 m |
| Maximum magnification | 1:8.1 | 1:7.5 | 1:6.25 | 1:1 |
| Minimum aperture | 22 | 22 | 22 | 22 |
| Diaphragm blades | 7 | 9 | 7 | 7 |
| Auto focus type | AF | AF | AF | AF |
| Lens Construction | 7 elements / 5 group | 5 elements / 4 group | 5 elements / 5 group | 7 elements / 6 group |
| Filter diameter | 46 mm | 27 mm | 43 mm | 49 mm |
| Macro Yes/No | No | No | Yes | Yes |
| Stabilization | No | No | No | No |
| Available mounts | Micro Four Thirds Sony E |
Pentax K | Samsung NX | Sony E |
| Dimensions | 60.6 x 38.6 mm | 9.2 x 62.9 mm | 61.5 x 21.5 mm | 62 x 55.5 mm |
| Weight | 135 g | 52 g | 85 g | 138 g |
| Additional information | Two glass mold aspherical lenses including a double-sided aspherical lens
Super Multi-Layer Coating Angle of View for SONY E-mount 50.7 degree |
Announced: 02.02.2012 | 1 aspherical element anounced Jan 2010 |
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| Score [max 5.00] | No score | |||
| Our Review |
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