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Canon EF 50mm f/1.8 lenses


  • version II was introduced in 1990 as a budget standard lens - “nifty fifty” or “plastic fantastic” - cheap, ultra-light, and nasty design, poor handling but optically very good for the money if you shoot at f/2.8-5.6 - but even then the corners never get sharp, wide open, even the centre is not sharp
  • version I has same optical formula but better build quality
  • a newer STM version has better build, better AF and more blades and is sharper in the corners
  • which 50mmm lens to buy?


Canon EF 50mm f/1.8 II lens

  • 50mm f/1.8 lens
  • 6 elements in 5 groups
  • noisy AF with switch to MF; MF ring turns during AF - so keep fingers away!
  • no MF scale
  • 5 straight blades
  • front focusing
  • close focus 0.45m giving 1:6.66 (0.15x) magnification
  • 52mm filter thread
  • cheap plastic mount
  • 68mm x 41mm
  • 130g

Canon EF 50mm f/1.8 STM lens

  • 50mm f/1.8 lens
  • 6 elements in 5 groups
  • better build than the II version
  • 7 blades instead of 5
  • metal mount not plastic
  • designed for lens hood (ES-68) which can be stored reversed on the lens
  • wider MF ring and focus by wire giving full time MF but means you can no longer retract the lens when camera is OFF
  • AF motor is now a “near-silent” although still audible, CDAF optimised stepping motor which gives faster, more accurate AF than on the II version


Canon EF 50mm f/1.8 II lens

Canon EF 50mm f/1.8 STM lens

photo/canonef50mmf1.8.txt · Last modified: 2017/04/27 12:58 by gary1

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