Our review of the Canon EF 200-400 f/4L IS 1.4x
Justin took the EF 200-400 f/4L IS 1.4x out for a whirl. We wanted to do a review of the lens shooting something other than wildlife and sports, which is obviously the target shooter for this lens.
I have yet to personally use the lens in any serious manner, I won’t be doing that until April when I travel to Namibia and South Africa.
“If you were to buy Canon’s 600mm f/4 L and the 400mm f/4 L, you’d be getting pretty close to $20,000 worth of glass. If you were to buy several of the faster primes, that number would double. If the versatility of a zoom is what you need and f/4 doesn’t bother you (and for many of us, it really doesn’t), then the Canon 200-400 f/4 L IS USM Extender 1.4x is, in itself, a bargain. Quality build and optics and the unique advantage of a built-in 1.4 extender will help keep photographers working with a single lens, yielding them more shots, more keepers, and better work.”