see also:

• Canon EF lenses
• Canon EF wide angle lenses

• wide angle rectilinear prime lens offering 84º diagonal field of view = 53º vertical and 74º horizontal
• 2 versions:
  • mark I:
  • mark II:
    • introduced in 2008
    • new optical design
    • 8 circular blades instead of 7 straight
    • weathersealed
    • SWC nano coating for less ghosting
    • larger, heavier
    • sharper wide open
• when used on Micro Four Thirds system:
  • gives 35mm eq. of 48mm f/1.4 but with eq. depth of field (DOF) of a 48mm f/2.8 lens
  • when used with 0.72x focal reducer gives 35mm eq. of 35mm f/1.0 lens with depth of field (DOF) of a 35mm f/2.0

• 24mm f/1.4 lens
• 11 elements in 9 groups incl. 1x ASPH and 1x UD
• USM AF with full time MF
• 7 straight blades
• rear focusing
• close focus 0.25m giving 0.16x magnification
• 77mm filter thread
• 83.5mm x 77.4mm
• 550g

• 24mm f/1.4 lens
• 13 elements in 10 groups inc. 2x aspherical and 2x UD elements
• USM AF with full time MF
• 8 rounded blades but become straight by f/5.6
• IR index
• no hard infinity stop
• rear focusing
• close focus 0.25m giving 0.16x magnification
• 77mm filter thread
• 94mm x 87mm
• 650g
• Subwavelength Structure Coating (SWC)
• weather sealing

• Photozone.de
  • 1.4% barrel distortion
  • vignetting 3.3 EV
  • sharpest at f/4, soft edges at f/1.4-f/2.0
  • 1.15px lat. CA and considerable longitudinal CA
  • bokeh not great
  • “At max. aperture (f/1.4) the technical image quality isn't all that great - an extreme vignetting and soft corners are obvious flaws here” - best used at f/4-f/8
• http://www.kenrockwell.com/canon/lenses/24mm-f14-ii.htm
  • bokeh busy
  • lots of coma at f/1.4 much less at f/2.8-f/4
  • strong vignetting wide open, gone by f/2.8
  • good flare control
  • image gets slightly larger as focussed more closely