see also:

• a catalogue of Micro Four Thirds lenses
• 3-5x standard range zoom lenses for Micro Four Thirds
• 8-10x super-zoom lenses for Micro Four Thirds

• the 1st weatherproofed lens for Micro Four Thirds system
• especially designed for videographers although aperture is not constant across the focal length range
• the price for its versatility is the slow aperture. but you do get:
  • world's fastest autofocus for slowish moving subjects when used on the E-M5
  • weatherproofing to match the Olympus OM-D E-M5 camera
  • 4x zoom with field of view range equivalent to 24mm ultra wide angle to 100mm short telephoto on a 35mm full frame camera
  • macro to 0.36x activated via a macro button on the lens (0.72x in full frame terms when you consider the smallest field of view)
    • lens becomes set at 43mm focal length with widest aperture being f/6.0 and closest focus distance of 20cm
  • power zoom lever for smoother zooming during video recording
  • near silent AF for video recording
  • versatile, user customisable lens Fn button

• 10 elements in 9 groups
• closest focus 35cm in normal mode and 20cm in macro mode
• 5 rounded blades
• 52mm filter thread
• 57x83mm
• 211g

• Pekka Potka
  • not as sharp wide open at 12mm as the pro level Olympus ZD 12-60mm f/2.8-4.0 lens, nor the Olympus m.ZD 12mm f/2.0 lens as would be expected
  • a very reasonable lens overall
• Robin Wong's hands on review of its macro capabilities
• Robin Wong's hands on review of its wide angle capabilities
• Photozone.de review
  • versatile but consumer grade build and optical quality