Canon EF 100-400mm f4.5-5.6L IS USM Telephoto Zoom Lens for Canon SLR Cameras
Yet another recent replacement in this round-up, the Canon EF 100-400mm f/4.5-5.6L IS II replaces the popular 100-400mm f/4.5-5.6L IS. Though the latter was rather long in the tooth, it was still commonly seen attached to the cameras of professional wildlife and sports photographers, even to this day in fact. However, the new EF 100-400mm f/4.5-5.6L IS II is a proper upgrade in every respect.
Though it has a lot to live up to, the Canon EF 100-400mm f/4.5-5.6L IS II continues the tradition of recent Canon replacement lenses raising the bar for their market segment. There's one twist with this replacement and fortunately it works to the benefit of the consumer; it’s priced at or below the lens it replaces and to my knowledge that's a first for a Canon lens.
Another first (and a welcome one to boot) is that the hood of this lens has an integrated finger window which allows you to adjust an attached polarizer without taking the hood off. While this is common with lenses from other manufacturers (like Pentax for example) this is something new for Canon. For those of us who've struggled with adjusting polarizers on hooded Canon lenses, this little detail is greatly appreciated.
To the more important metrics, the Canon EF 100-400mm f/4.5-5.6L IS II is extremely sharp across its range and its auto-focus is cheetah quick and reliable. This comes as no surprise if you've been following Canon's recent replacements. This one is no different from the other "II's" in that regard - this lens leads its class.
If you a looking for a zoom lens that covers the telephoto range out to 400mm, this lens should top your list. It's built like a tank, weather-sealed against the elements, priced right, and should last you for years to come.