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Panasonic Leica DG 42.5mm f/1.2 Nocticron lens


  • premium quality portrait lens
  • specs officially announced Jan 2014, available March 2014
  • a bit heavier and much more expensive than the superb Olympus m.ZD 75mm f/1.8 lens
  • it has the widest f ratio of any AF lens designed for Micro Four Thirds system
  • inevitably it will be compared with:
      • slightly shallower depth of field (DOF) as eq. to 85mm f/1.8 lens on full frame but no image stabiliser
      • close focus is 0.7m
      • bayonet style hood
      • surprisingly, the Fuji is a touch smaller and lighter - perhaps it will have more vignetting:
        • filter 62mm
        • 405g, 73mm diam x 70mm long
      • $US999
  • its width prevents use of the E-M5 accessory grip


  • 42.5mm f/1.2 = 85mm f/2.4 lens on a full frame camera in terms of fov and depth of field (DOF)
  • 14 elements in 11 groups including one ED lens, one UHR lens, two aspherical lens
  • lens manufacture uses a novel method to remove onion bokeh which has been a problem with modern aspherical lenses - see
  • aperture ring (only functions on Panasonic cameras not Olympus cameras)
  • silent screw integrated stepping AF motor
  • internal focus
  • nano coating to reduce ghost and flare
  • metal barrel
  • 9 circular blades
  • close focus 0.5m giving 1:10 macro covering an area of 173 X 130 mm = 6.8 X 5.1 inches
  • 67mm filter
  • 74mm diam x 77mm long
  • 425g
  • includes thumb-screw style hood
  • £1,399, $US1599


    • bokeh appears buttery smooth although wide open, OOF highlights become ovoid near the periphery as with most fast lenses
    • centre and corners reasonably sharp wide open and by f/2 it is matching the Olympus m.ZD 75mm f/1.8 lens - as centre becomes much sharper at f/2 and extremely sharp at f/2.8-4, corners sharpest at f/4
    • some longitudinal CA but flare, ghosting, distortion, lateral CA, spherical aberration, coma and astigmatism are well controlled - should be a very nice lens for wide field astrophotography to give nice star images across the frame
    • fairly severe vignetting wide open which is also evidenced by the oval shaped out-of-focus highlights in the corners but this resolves as lens is stopped down to f/2.5.
    • very accurate AF
    • “a phenomenal lens; one of the best we've ever tested”
    • Wide open, the Panasonic Leica has notably higher contrast straight out of camera. It really has remarkable contrast for an f/1.2 lens.
    • The Fuji exhibits some spherical aberration wide open, which may show as a glow with high contrast subjects such as white text on a black background. The Panasonic Leica exhibits extremely minimal spherical aberration.
photo/pan42.5mm.txt · Last modified: 2017/09/28 12:20 by gary1

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