Product Highlights
  • f/2.8 - f/31 Aperture Range
  • Full-Frame Format
  • 8/6 Elements/Groups
  • Body-Integrated Image Stabilization
  • Sony A Mount
Sony 135mm f/2.8 Smooth Transition Focus A-Mount Lens (A99 & A77) Sony 135mm f/2.8 Smooth Transition ...
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The advanced SAL-135F28 STF (Smooth Transition Focus) telephoto lens incorporates an apodization optical element that distributes light rays to create smooth, aesthetically pleasing out-of-focus backgrounds and foregrounds that make sharp-focus subjects stand out more vividly. Mounted on your Sony α (alpha) DSLR-A100 camera, this lens provides a 200mm focal length (35mm equivalent).

Smooth Transmission Focus

While subjects remain in sharp focus, out-of-focus backgrounds or foregrounds are blurred smoothly and evenly with gradation that thickens toward the edges of the frame for a pleasing aesthetic effect

Transmissive Brightness

After light passes through the apodization element, the lens aperture of f2.8 yields a T (transmissive brightness) equivalent of 4.5; a manual aperture ring can adjust T setting from 4.5 to 6.7.

Wide Focus Ring

The dedicated manual focusing system is controlled by a wide focus ring that’s comfortable to hold and gives you a solid, hands-on feel for pinpoint focusing of your subject.

Circular Aperture

Because aperture blades form a near circle at the wide openings used for low-light shots, spot-light sources have a pleasing circular defocused effect.

What's Included

  • Front and rear lens cap
  • SH0014 solid-circular lens hood
  • Lens carrying case


Product Specifications


Detailed Specifications
 Dimensions (Approx.) :  3 1/8 x 3 7/8” (80 x 99mm)
 Weight (Approx.) :  1lb 10oz (730g)
 Aperture (Max.) :  f/2.8
 Aperture (Min.) :  f/31
Blades :  9 aperture blades
Depth-of-Field : Yes
Distance Encoder : Yes
Focal Length : APS: 202.5mm (35mm Equivalent: 135mm)
Lens Groups-Elements : 1 group, 2 elements
Lens Type : Standard & Medium Telephoto
Magnification : x 0.25
Minimum Focus Distance : 2.85' (87cm)

Questions & Answers

Sony 135mm f/2.8 Smooth Transition Focus A-Mount Lens (A99 & A77)

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