Olympus Zuko 50mm
Olympus Zuko has a good optical lens quality, I have no doubt with it.
Even the focus motor which is relatively slow and noisy, and the lack of a focus range limiter switch, I still recommend.
The features of Olympus Zuko 50mm 1:2.0 macro:
• 50mm fixed focal length; fast F2.0 maximum aperture
• Macro focusing: 1:2 maximum magnification (1:1 35mm equivalent)
• ‘Focus by wire’ manual focus system
• Four Thirds mount for Olympus and Panasonic dSLRS
• Price $410
Based on Dpreview, Olympus Zuko 50mm offers a winning combination of optical quality and solid build in a compact package. With its relatively fast maximum aperture, it also offers Four Thirds users the opportunity to use true selective focus effects. Quite simply, every E-system user should own one.