Rated 5 out of
Ross Chevalier from
Absolutely brilliant"Buying long glass shouldn't be risky, and you shouldn't end up with something that is such a pain to use that it doesn't get used often. Canon does this with their DO (diffractive optics). This is a very sophisticated but uncommon lens design that reduces the bulk and length of long lenses. I have shot the 400/2.8 L and it is brilliant but handheld gets fatiguing very fast. For a one stop penalty in lens speed you get a true tack sharp optic that you can carry and shoot without the need for extra support. Sure you could buy Canon's 100-400 f/5.6 zoom for a lot less, but in addition to it getting slower, it's also tending to softness. The 400/4 DO is incredibly sharp, easy to shoot, takes drop in 52mm filters and did I mention you can readily shoot it handheld!
Does tend to suggest that my Sigma 120-300/2.8 will get a lot less use though..."