Canon EF 200-400mm f/4L IS USM

Very sharp. Superb build quality. Wide aperture for a telezoom. Integrated teleconverter. Uses small drop-in filters. Focus limiter function. Rotating tripod collar. Includes hard case and carrying straps.

Extreme price tag. Heavy.

Conclusions There's no argument to be made about the Canon EF 200-400mm f/4L IS USM Extender 1.4x in terms of image quality, build quality, or the thoughtfulness of its control scheme. The bones to pick are with its price and hefty design. The...

Aimed squarely at professional sports and wildlife photographers, the Canon EF 200-400mm f/4L IS USM Extender 1.4x lens is a high-performance super telephoto zoom lens with an optically matched, built-in 1.4x extender. The benefit is in applications...

Great image quality ; Super-fast autofocus ; Tough build quality

Hugely expensive ; Big and heavy

If you can see further than the eye-watering price tag, this lens is a real heavyweight in terms of performance as well as physical construction. It has a 200-400mm zoom range in standard trim with a built-in 1.4x tele-converter or ‘extender’, boosting...

We weren't able to run our usual Imatest tests on this lens due to lack of space in our test set-up. Although there's (just) enough space to cover a 200mm lens with smaller cameras and lenses, the combined length of the lens plus the EOS camera we used...

Hefty pricetag aside, the Canon 200-400mm f/4 IS USM is indisputably a fantastic piece of kit. Teaming a rock-solid build with outstanding image quality, as well as including the majority of Canon’s most advanced technological features in its tool...