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Sigma 19 mm f/ 2.8 EX DN Lens

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Sigma 19 mm f/ 2.8 EX DN lens

MTF-charts

Sigma 19 mm f/ 2.8 EX DN MTF Chart

Optical design

Sigma 19 mm f/ 2.8 EX DN optical design

Format: APS-C (crop)

Type: Prime lens

Focusing: Auto Focus (AF)

Lens mounts: Micro 4/3, Micro 4/3, Sony E, Sony E

First year of production: 2012

Optical design: 8 elements in 6 groups

Features: Ultra-Sonic Motor
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Average price: $233

Specifications:

Focal lengthMax. apertureMin. apertureBladesMin. Focus (m.)Filter Ø (mm.)Weight (gr/oz)Length (mm/in)
19mmf/2.8f/2270.246140/4,946/1,8

Additional information:

The Sigma  19 mm f/ 2.8 EX DN

  • Length 45.7 mm
  • Diameter 60.6 mm
  • Angle 59.3° MFT (Sony E-mount 73.5°)
  • Max. magnification 1:7.4
  • Hood LH520-02 included

The Sigma 19mm F2.8 EX DNis a fast wide-angle prime lens for Sony E and Micro 4/3 mirrorless cameras.

The same lens is used as non-interchangeable on the Sigma DP1 Merill camera. A large size of the lens can be explained by higher requirements for telecentrisity of the Foveon X3 sensor than those of the Bayer sensor. Rear lenses deflect rays so  that angle of incidence to the sensor approaches 90 °.

 

Vignetting

Distortion


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Posted by: Rainbow   Date of publication: 31.03.2012


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