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Sony 135 mm  f/ 2.8 [T4.5] STF Lens

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Sony 135 mm  f/ 2.8 [T4.5] STF lens

Sony 135 mm  f/ 2.8 [T4.5] STF lens

Sony 135 mm  f/ 2.8 [T4.5] STF lens

Sony 135 mm  f/ 2.8 [T4.5] STF lens


Sony 135 mm  f/ 2.8 [T4.5] STF MTF Chart

Sony 135 mm  f/ 2.8 [T4.5] STF MTF Chart

Sony 135 mm  f/ 2.8 [T4.5] STF MTF Chart

Optical design

Sony 135 mm  f/ 2.8 [T4.5] STF optical design

Sony 135 mm  f/ 2.8 [T4.5] STF optical design

Format: 35mm SLR

Type: Prime lens

Focusing: Manual Focus (MF)

Lens mounts: Sony A / Minolta A, Sony A / Minolta A

First year of production: 2006

Optical design: 8 elements in 6 groups

Features: Defocus control
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Average price: $1563


Focal lengthMax. apertureMin. apertureBladesMin. Focus (m.)Filter Ø (mm.)Weight (gr/oz)Length (mm/in)

Additional information:


The Sony 135 mm  f/ 2.8 [T4.5] STF

The characteristics of the Sony 135 F2.8 [T4.5] STF (SAL-135F28)

  • Telephoto lens with a focal length of 200 mm (35 mm equivalent), featuring Smooth Trans Focus mode and special optical elements providing exceptionally soft transition from focused area to out-of-focus blur.
  • An apodized optical element distributes beams of light in the way for out-of-focus background to contract with subjects in focus,
  • A broad focus ring and aperture control ring provide additional control of out-of-focus area.
  • Filter rotation on focusing: no
  • Barrel extension on focusing:  yes
  • The focus ring does not rotate in AF mode.
  • Color: black.
  • Max. magnification: 0.25

The Sony 135 mm  f/ 2.8 [T4.5] STF (SAL-135F28) is equipped with two apertures. The primary 9-blade aperture is controlled by the camera, the secondary 10-blade aperture is activated by  a dedicated aperture control ring in stepless aperture mode (from f/4.5 to f/2.8). APD elements allows you to achieve a softer bokeh in manual mode than that in AF mode.

The Sony 135 mm  f/ 2.8 [T4.5] STF (SAL-135F28) features special optical elements ensuring pleasant-looking out-of-focus blur, an internal APD filter (two elements in one group), and a 10-blade aperture (stepless aperture setting).

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Posted by: shubshik   Date of publication: 02.10.2010

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