Sony announces 28-75mm F2.8 SAM lens
Published Aug 27, 2009
|
dpreview staff
Pre-IFA 2009: Sony has released a full-frame 28-75mm F2.8 SAM lens to accompany its new Alpha DSLR-A850 digital SLR. The constant F2.8 lens offers a less expensive alternative to the Sony Zeiss 24-70mm F2.8 ZA for A850 and A900 owners looks for a fast standard zoom. Construction is made up of 14 elements in 16 groups, including four aspherical elements. It features the SAM (Smooth Autofocus Motor) in-lens autofocus technology, rather than the SSM system used in the ZA lens. Priced approximately at around $800 USD, it will start shipping from November 2009.
The company has also announced a little more detail about its SAL30M28 30mm F2.8 Macro DT (APS-C format) lens. It will be launched at the same time and has a minimum focusing distance of 0.129m, giving 1:1 reproduction.
Sony 28-75mm F2.8 SAM lens
Sony 28-75mm F2.8 SAM lens specifications
| Price |
US: $800 |
| Maximum format size |
FX |
| Focal length |
28-75mm |
| 35mm equivalent focal length (on APS-C cameras) |
42-112.5mm |
| Diagonal angle of view |
75°- 32 °
|
| Maximum aperture |
F2.8 |
| Minimum aperture |
F32 |
| Lens Construction |
• 16 elements/ 14 groups
• 4 aspherical |
| Number of diaphragm blades |
7 |
| Minimum focus |
0.38m / 1.3ft |
| Maximum magnification |
0.22
|
| Image stabilization |
No
|
| Filter thread |
67mm |
| Weight |
565 g (20 oz) |
| Dimensions |
77.5mm diameter x 94mm length
(3.2 x 3.8 in) |
| Lens Mount |
Sony Alpha/Minolta MA |
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