Olympus M. Zuiko Digital 2.0x Teleconverter MC-20

For wildlife photography the MC-20 (2.0) teleconverter rarely comes off the Olympus M. Zuiko ED 40-150mm f/4.0 IS PRO lens to make it a 80-300mm lens (160-600mm at 35mm equivalent). I also use it often on the Olympus M. Zuiko ED 300mm f/4.0 IS PRO for raptor and songbird photography. I find, like the MC-14, that my autofocus speed, image quality, and sharpness are all outstanding with this combination.