The 200-400mm is perhaps most likely to be found on high-end full frame camera such as the EOS-1D X and the EOS 5D Mark III. Test results on full frame are little short of extraordinary - the lens comes ridiculously close to matching Canon's very best primes. Click for comparisons with the EF 300mm f/2.8L IS II USM and EF 400mm f/2.8L IS II USM in our lens widget.
| Sharpness | Sharpness results are remarkable - the lens delivers superb results right across the frame wide open at F4, all across the zoom range. There's essentially no need to stop down for sharpness - there's little difference from F4 through to F11. |
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| Chromatic Aberration | Chromatic aberration is very low. If you look really hard you may see a little fringing at each end of the zoom, but is simply won't be a problem in normal use. |
| Vignetting | Vignetting is on the whole pretty low. It may possibly be visible in some situations towards the long end of the zoom. |
| Distortion | Distortion is essentially nonexistent at any focal length. |
Canon EF 200-400mm f/4L IS USM Extender 1.4x | $11,799.00 |
Canon EF 200-400mm f/4L IS USM Extender 1.4x | $11,799.00 |
Canon EF 70-200mm f/2.8L USM Telephoto Zoom Lens for Canon SLR Cameras | $1,449.00 |
Canon EF 300mm f/4L IS USM Telephoto Lens for Canon SLR Cameras | $1,449.00 |
Canon EF 70-300mm f/4-5.6L IS USM UD Telephoto Zoom Lens for Canon EOS SLR Cameras | $1,599.00 |
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