Sigma 50mm f/1.4 DG HSM A lens

The Sigma 50mm f/1.4 DG HSM Art lens is a professional-level fixed focal length lens made by Sigma Corporation.[1] It was announced at CES in January 2014 and immediately became highly anticipated amid reports that Sigma was not aiming to compete against Canon or Nikon's 50mm prime lenses but rather the newly released Zeiss Otus 55/1.4, a lens costing US$4000.[2] Retail prices for the Sigma 50mm lens had not yet been announced but it was initially expected that it would sell for around US$1350.[3] However, when official pricing was announced on April 11, 2014, the retail price was even lower: US$950.[4]

Sigma 50mm f/1.4 DG HSM A
MakerSigma
Technical data
TypePrime
Focus driveUltrasonic motor
Focal length50mm
Crop factor1.0
Aperture (max/min)f/1.4-f/16
Close focus distance40cm
Max. magnification1:5.6
Diaphragm blades9
Construction13 elements in 12 groups
Features
Short back focus No
Lens-based stabilization No
Macro capable No
ApplicationLow-light, portrait
Physical
Max. length99.9mm
Diameter85.4mm
Weight815g
Filter diameter77mm
Accessories
Lens hoodPetal-type included
Angle of view
Horizontal54.4 degrees
Vertical37.8 degrees
Diagonal63.4 degrees
History
IntroductionAnnounced January 2014, available June 2014
Retail info
MSRP$950 / £850 / €1000 USD

Lens reviews of the Sigma 50mm f/1.4 DG HSM Art have been largely very positive, and have confirmed the expectations that it is significantly sharper than the 50mm f/1.4 prime offerings by Canon and Nikon[5] while also significantly cheaper. Chromatic aberration is minimal across the aperture range, as is distortion, and the lens is sharpest at f/5.6, after which it is marginally softer as diffraction effects become more prominent.[6]

In recent reviews it has been shown that the Sigma 50mm f/1.4 DG HSM is sharper and has smoother bokeh than the Canon 50mm F/1.2 Lens.[7]

References
  1. "50mm F1.4 DG HSM A". Sigma Photo. Sigma Photo. Retrieved 11 June 2014.
  2. "Sigma 50mm f/1.4 DG HSM "A" (Tested)". SLR Gear. Retrieved 11 June 2014.
  3. DL, Cade. "Australian Website Lists Price of Sigma's 50mm f/1.4 Otus Competitor at $1,350". Petapixel. Retrieved 11 June 2014.
  4. "Sigma Shocks Us with New 50mm f/1.4 Priced Far Below Expectations". F-stoppers. Retrieved 11 June 2014.
  5. Kevin, Carter. "Sigma 50mm F1.4 DG HSM A Canon lens review: Art for Art's sake?". DxO Mark. Retrieved 11 June 2014.
  6. Wolstenholme, Gary. "Sigma 50mm f/1.4 DG HSM Art Lens Review". EPhotozine. Magezine Publishing. Retrieved 12 June 2014.
  7. Will, Chao. "Sigma 50mm F1.4 DG HSM A vs. Canon 50mm F1.2L". Will Chao Photography. Retrieved 1 June 2015.
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