Canon EF 400mm f/4 DO IS USM

alaTest has collected and analyzed 3 user reviews of Canon EF 400mm f/4 DO IS USM from Amazon.com. The average user rating for this product is 4.7/5, compared to an average user rating of 4.3/5 for other products in the same category on Amazon.com.

The Canon EF 400mm f/4 DO IS USM Lens is Canon's first DO (Diffractive Optics) lens - yielding 400mm f/4 IS performance in a relatively small and light handholdable package .

Great lightweight lens for wildlife while handholding especially for birds. The contrast problems mentioned by some are completely overblown and easily fixed in photoshop. Overall a fantastic lens.

Great lightweight lens for wildlife while handholding especially for birds. The contrast problems mentioned by some are completely overblown and easily fixed in photoshop. Overall a fantastic lens.

As far as the sharpness is concerned, it surpassed Canon 400mm f/5.6 'L' lens, especially in the frame center, see the test results on

Great lightweight lens (for a 400mm f4).

I use this product for taking photos mostly of wildlife and sport close-ups. This lens is the best zoom lens i have ever had in my life and i will never get board with using it. There is nothing wrong with this lens.

After a first disappointing try, I bought one of these lenses second hand as new, to take care of my back suffering from my practice of the 500 mm f/4 and for traveling light. My lense has been made in 2002 I think. I dont believe one second that the...

Sharp at f4. Excellent image quality with 1.4X extender. Surprisingly good with a 2x extender too. Very fast autofocus on a 1 series body. All the typical attributes of Canon's superteles except the weight. Contrast with DO lenses is a little reduced...