Sony?s 135 mm f/2.8 [T4.5] STF (Smooth Trans Focus) is a unique telephoto lens designed with Alpha digital camera owners in mind. This telephoto lens, which provides a 200mm focal length (35mm equivalent), allows users to explore their creative side because it comes complete with a new Smooth Trans Focus system. The new Smooth Trans Focus system delivers spectacular effects for both foregrounds and backgrounds, and ensures unfocused areas are smooth and free of distinctive edges. A special apodisation optical element distributes light rays evenly to guarantee results are aesthetically pleasing, while the incorporated ring gives you extra control, meaning you can make your subjects stand out more vividly without any loss in quality or detail.
| General | Length | 9.9 cm |
| Diameter | 8 cm | |
| Weight | 0.73 kg | |
| Colour | Black | |
| Miscellaneous | Included Accessories | Lens hood, dust cap, lens cap, lens case |
| Lens System | Type | Telephoto lens |
| Special Functions | Telephoto lens for smooth, natural focus effects | |
| Intended For | Digital SLR | |
| Focal Length | 135 mm | |
| Lens Aperture | F/2.8-4.5 | |
| Minimum Aperture | F/32 | |
| Magnification | 0.25 | |
| Min Focus Range | 87 cm | |
| Max View Angle | 18 degrees | |
| Lens Construction | 6 group(s) / 8 element(s) | |
| Filter Size | 72 mm | |
| Diaphragm Blades | 9 | |
| Mounting Type | Minolta A-type | |
| Features | Smooth Trans Focus (STF) |




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