The Canon EF 70-200mm f/4.0 L USM Lens is the best value L-series Lens featuring professional grade build and optical qualities. The Canon EF 70-200mm f/4.0 L USM Lens is light and small compared to other L-series lens.
The Canon EF 70-200mm f/4.0 L USM Lens is compatible with all the canon EOS digital SLR cameras, including the full-frame digital SLR (EOS 5D, EOS 1Ds Mk III) amd sub-frame digital SLR (EOS 20D, 30D, 40D, 350D, 400D, 450D).
The Canon EF 70-200mm f/4.0 L USM Lens is very sharp wide open and improves only slightly when stopped down – and primarily in the corners at the wide end of the focal length range. Very slight barrel distortion is only noticeable at 70mm on a Full Frame body. Distortion disappears by around 100mm and is insignificant on a 1.3x or 1.6x FOVCF body. Vignetting is very well controlled – full frame users might notice slight vignetting in the corners at f/4. CA is very well controlled.
The 8-blade aperture opens to a constant f/4 at all focal length ranges. This is a very nice feature as exposure settings do not require a change as the lens is zoomed through the focal lengths. F/4 is not fast and is not slow. F/4 is narrow enough to allow the smaller size and weight. F/4 is wide enough to create some background diffusion in this focal length range. F/4 is wide enough to not require bright light for handholding. However, I do not consider this a low light lens. You will likely need a flash when shooting indoors after the sun sets.
The Canon EF 70-200mm f/4.0 L USM Lens focuses very fast, very quietly and very accurately thanks to Canon’s excellent Ring USM (Ultrasonic Motor). FTM (Full Time Manual) focusing is enabled. The focus and zoom rings are very nicely sized and turn very smoothly. The 70-200 f/4 does not extend with zooming or focusing – and the front element does not rotate.
As the Canon EF 70-200mm f/4.0 L USM Lens is compatible with the Canon Extender EF 1.4x II and the Canon 2xEF Extender EF 2x II, these are popular accessories for this lens.
These Canon EF 70-200mm f/4.0 L USM Lens are brand new in retail box with full 12 months warranty.
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