see also:

• Sigma 85mm f/1.4 DG HSM Art full frame lens
• Canon EF 85mm f/1.2L USM lenses
• wide aperture 85mm field of view portrait lenses

• the Sigma 85mm f/1.4 EX DG HSM was announced in Feb 2010 and has won much acclaim although is certainly not a perfect lens

• 85mm f/1.4 full frame lens
• 11 elements in 8 groups incl. 1x aspherical and 1x SLD elements
• no aperture ring
• 9 circular blades
• HSM AF
• internal rear focus
• close focus 0.85 m giving magnification 1:8.6
• 77mm filter
• no weather sealing
• 86 x 88mm
• 725g

• Photozone.de
  • 0.14% barrel distortion ie. almost nil!
  • 1.3EV vignetting - much better than the Canon EF 85mm f/1.2L USM lenses
  • very sharp centre, soft corners due to considerable coma, centre sharpest at f/4, edge-to-edge sharpness best at f/5.6-f/8
  • minimal lat. CA 0.6px
  • bokeh a little nervous and shows long. CA
  • a bit tricky to find the exact manual focus due to the very short focus path
• DxO Mark
• https://darwinwiggett.wordpress.com/2011/04/12/sigma-85mm-f1-4-vs-canon-85mm-f1-2l-ii/
  • AF is ~2x faster than the Canon EF 85mm f/1.2L USM lenses II version
• http://www.cameralabs.com/reviews/Sigma_85mm_f1-4_EX_DG_HSM/
• SLR Gear
• LensTip
  • minimal 5% astigmatism
  • coma worse than the Zeiss 1.4/85 and the Nikkor AF-S 1.4/85 but a tad better than the Canon 1.2/85, but the best coma correction is the cheap Samyang / Rokinon 85mm f/1.4 lenses!
• ePhotozine