I found it to deliver acceptably sharp results, about on par with the EF 100-400 IS ii. I also got a higher keeper rate of images with it, due to quite fast ...

13 aug. 2005 · The Canon EF 400mm f/4 DO IS USM Lens has been criticized for its poor specular highlight bokeh (OOF blur quality), but I have seldom ...

Great lightweight lens (for a 400mm f4). The resolution is very good however the contrast is lower than other L series super telephotos. This is due to the DO ...

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13 mars 2012 · It works great in daylight, but it's failings show quickly as the sun starts to fade. Still it's fun to use a focal length that you'd otherwise ...

The EF 400 f4 DO IS ii delivers image quality that is very, very good. Images are sharp and detailed, colours and contrast are excellent. I find it to be second ...

As well as the fancy optics, this lens also features image stabilization for a 2-stop shutter speed advantage, a ring-type ultrasonic focus motor and dust and ...

12 juli 2012 · Absolutely great for handheld shots (Flight shoots of big birds such as herons/ eagles perfect; small passerine (song-)birds acceptable).

27 apr. 2015 · This lens is positioned to be the ultimate lightweight, hand-holdable sports and wildlife lens and is one of the overall best-performing lenses available.

18 jan. 2017 · It delivers excellent edge-to-edge sharpness, even at f/4, with uniform illumination and no distortion. And, despite a super telephoto focal ...