see also:

• Micro Four Thirds system
• a catalogue of Micro Four Thirds lenses
• 3-5x standard range zoom lenses for Micro Four Thirds
• standard camera zoom lenses
• Panasonic website

• this amazing lens is the smallest 3x zoom lens for large sensor cameras currently available
• not only is it the size of a pancake lens but it's optical quality is as good as most kit zoom lenses, plus you get optical image stabilisation and power zoom as well.
• thus what you are paying all that extra money for is the compact size, but that may well be worth it for many people.
• Panasonic is bundling this lens with the Panasonic GX-1 enthusiasts compact Micro Four Thirds system camera to make this kit the smallest 3x zoom kit available, even smaller than the Nikon 1 system
• best image quality is at 25mm at f/5.6-f/8
• Olympus users may need post-processing to reduce CA

• 14-42mm focal length = 28-84nn field of view coverage in 35mm terms
• f/3.5(wide) - f/5.6 (tele) is comparable to most kit zoom lenses
• Nano surface coating
• 9 elements in 8 groups (4 aspherical lenses , 2 ED lens)
• POWER OIS optical image stabilisation (better than Mega OIS) but no OIS switch
• 7 circular blades
• close focus 0.2m = 0.17x macro
• 37mm filter (does not rotate on focusing)
• 61mm x 26.8mm
• 95g/3.4oz
• electric zoom lever
• manual focus lever
• $399

• ephotozine.com review:
  • “Best performance came in at around f/8. Focusing speed and accuracy are excellent, even in low light conditions.”
  • “if you use the lens on an Olympus camera, CA will show at wide apertures and angles and you will need to remove it manually”
  • “On a Panasonic GF or Olympus Pen, this lens enables you to carry the camera in a large pocket or, more elegantly for a woman, in her handbag”
• SLRgrea.com review:
  • “remarkably sharp, and a noticeable improvement over the existing 14-42mm kit len”
  • “best at 25mm, at 42mm, we note a bit more corner softness when used wide open but improves stopped down”
  • “zero distortion at 25mm but minor distortion at other focal lengths”
  • “very fast autofocus results, motivated by an in-lens electrical motor that's very fast and very quiet”