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Sony AF DT 50 mm  f/ 1.8 SAM Lens

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Sony AF DT 50 mm  f/ 1.8 SAM lens

Sony AF DT 50 mm  f/ 1.8 SAM lens

Optical design

Sony AF DT 50 mm  f/ 1.8 SAM optical design

Format: APS-C (crop)

Type: Prime lens

Focusing: Auto Focus (AF)

Lens mounts: Sony A / Minolta A

First year of production: 2009

Optical design: 6 elements in 5 groups

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Photos (13)

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Owners (10)

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Average price: $197


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

Additional information:


The Sony AF DT 50 mm  f/ 1.8 SAM

The characteristics of the Sony AF DT 50 mm  f/ 1.8 SAM (SAL50F18)

  • Fast portrait lens with large aperture.
  • Fixed focal length providing high optical performance.
  • The DT lens design is optimal for APS-C cameras:  lightweight, compact,  and convenient for traveling.
  • Smooth Auto-focus Motor (SAM) ensures smooth autofocusing.
  • Autofocus/Manual focus switch.

The Sony AF DT 50 F1.8 SAM lens design provides excellent brightness across the frame and high contrast at any aperture setting. Thanks to the optical scheme, the lens does not produce chromatic aberrations and accurately delivers the range of colors.


  • very good image quality at the center and frame borders
  • insignificant chromatic aberrations
  • low distortion
  • excellent operation in bright light
  • rather fast autofocus


  • visible astigmatism
  • higher vignetting level (compared to the competitors)
  • slightly inaccurate and noisy autofocus
  • too much plastic

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Posted by: shubshik   Date of publication: 01.10.2010

Photos taken with this lens Sony AF DT 50 mm  f/ 1.8 SAM:

Autor: Kasabian
4.5 0 2276

Autor: raa53
4 0 2249

Portrait of Zachar
Autor: raa53
4 0 3723

Autor: Yuri Degtyarev
3 0 2904

Mechanical quality3.508
Optical quality4.128
Pricing / Value4.006
Overall lens rating

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