| Year | 1976 |
| Lens Groups | 4 |
| Lens Element | 4 |
| Aperature Blades | 6 |
| Minimum Aperture | f/22 |
| Closest Focusing | 1.5 m |
| Max. Magnifcation | 1:10.2 (0.098x) |
| Filter Size | 55 mm |
| Diameter x Length | 66 x 85 mm |
| Weight | 385 gr (0.85 lb) |
| Hood | BT-55 |
A lens which offers astonishingly good optical performance from wide open on a "full frame" Sony A7 camera. Note that there are two versions of this lens : a first (Sonnar type, 4 elements in 3 groups) and a second (Ernestar type, 4 elements in 4 groups), the latter supposed to better than the former. Chromatic aberrations and distorsion are very well controlled and the heavy vignetting wide open is, with the weight, the only shortcoming of this very economic and largely underrated lens.
An amazing and cheap lens. Supersharp! Light! Works beautifully with nex5n. Perfect for travelling. Tried the 2.5 version but its sooooooo huge n heavy. I find that the more comfy the lens is the more ull use it and this lens gives a really high quality images! Recommended!