Sony 135mm F2.8 (T4.5) STF

Announced Jun 5, 2006 •
Telephoto prime lens | Sony Alpha | SAL-135F28
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Product description
Announced Jun 5, 2006

The Sony 135mm F2.8 (T4.5) STF is a unique medium telephoto prime lens, designed for use on Sony's full-frame and APS-C format SLT cameras. The 'STF' in its name stands for Smooth Transition Focus, and refers to the incorporation of an 'apodization optical element' that distributes light rays in a way specifically designed to create smooth, aesthetically pleasing out-of-focus areas. This beautifully-engineered lens is manual focus only. For more versatility (at a higher cost) you should also consider its cousin the 135mm F1.8 ZA Carl Zeiss Sonnar T*, which offers AF, and brighter maximum aperture.

Quick specs
Lens type Prime lens
Focal length 135 mm
Image stab. No
Lens mount Sony Alpha
Max aperture F2.8
Min aperture F31.0
Min focus 0.87 m (34.25)
Max magnification 0.25×
Weight 730 g (1.61 lb)
Length 99 mm (3.9)

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Sony 135mm F2.8 (T4.5) STF