Canon 'L' lenses have a reputation for extremely high picture quality - but what about older designs? The Canon 17-40mm f/4 'L' is clearly a great ultra wide angle lens for full frame cameras, but what are its shortcomings, and how would it perform on modern full frame and APS-C cameras? Remember, I love Canon 'L' lenses just as much as everyone else, but...I have to be completely objective in my reviews. See what you think.
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All pictures and footage taken by me on Canon 6D and 60D cameras.
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Music by Kevin Macleod, 'Opportunity Walks' (www.incompetech.com)
