Review by theuerkorn
September, 08 2009
Pros: Light weight, relatively cost effective, works great with EF70-200mm lens, easy to carry
Cons: Physically looses one stop, slight image quality reduction, 40% additional magnification not very dramatic
Review by profaudio1
March, 18 2007
Pros: A real "L" Professional Lens Extender with almost no degradation of the main lens's performance.
Cons: Why didn't I get one of these sooner? (Oh, yea, that's my fault... Never mind.)
Review by pennyjack
June, 27 2005
Pros: Solid construction, improves zoom w/ little loss of image quality or AF speed
Cons: PRICE - $300 ouch! Weight - it is heavy for its size
Review by leftism11
August, 28 2004
Pros: Great accessory. Simple, compact, lightweight, effective.
Cons: Somewhat expensive for such a small accessory, slightly cumbersome to remove mid-shoot.