I bought this lens years ago, but don't have the need to use it much. Reading reviews about poor focus at 300mm, I thought I would take a couple of shots. I shot this photo of a cedar fence at 20 ft at 300mm. I thought the IQ was very acceptable for this price lens.

It is not my primary lens, and that is why it only got a 4star (my favourite lenses are always shorter - 50mm for example) but it still great glass. It does get a little heavy for continuous shooting, especially with the heavier camera bodies, but is perfect to shoot people with from a distance at...

Consistent Output; Durable; Easily Interchangeable; Easy to get the hang of; Nice Bokeh; Strong Construction

Challenge to spot subject; Heavy

I am an L lens freak, got almost all of them including 7 primes, etc. Well in this case dont listen to us L-lens freaks. This is really a hidden gem. The DO version is useless, the L-version is outstanding, for built quality.

sharpness; lightweight; great IS

only built quality

Great all around high quality L Series Canon lens. Excellent image quality from wide to higher zoom. Rapid, quiet, accurate focus. Comparatively lightweight and compact for quality of lens and wide zoom range.[...] I have several other L series lenses; this one is up to the high standards of Canon.

Relatively Lightweight; Superb optics; Wide zoom range

None noted

Excelente Lente ! Ótimo vendedor ! Já tirei umas 1000 fotos ! O Estabilizador em 2 níveis funciona muito bem quanto a lente toda aberta e uma ótima opção e a trava de zoom que permite a utilização da lento como uma 70mm fixa ! Recomendo para fotografar natureza e esportes de velocidade !

I returned mine and got a higher-quality older lens off of eBay. I'm very happy that I did. This lens isn't very sharp at all but will fit the bill if you just need a lens and aren't too picky about the image quality.

good lens to work with my EOS Rebel it3...a tad difficult to focus, it is heavy, need a tripod, but quality pics taken.

photography; backyard; Travel; animals

We went to the Morton Arboretum near Chicago and "played" with the new lens. We are thrilled with it. First time out and we can't be happier, except for the weight and our own inexperience, the lens performed admirably. We also want to say that it is good for both outdoors and portrait shots.

Consistent Output; Easily Interchangeable; Rugged; Strong Construction

Blurry Focus; Heavy; Slow Focus

The lens is amazing. The image stabilizer definatly helps clean up your shots. Also the lens can be locked at 70mm to prevent from sliding out. I was debating between this lens, and the 28-135 IS lens, but i choose this lens over it mainly for the longer zoom.

Image stabilizer; Long range; USM

Have to stand at least 5 feet away from subject to focus

I took this lens with me to the zoo. Took photos and video with it. Fantastic output. I read a ton of reviews and was reluctant to buy it. Lot of reviews stating blurry focus and bad bokeh. You have to know how to adjust the settings for this lens. My photos came out sharp.

Consistent Output; Fast / accurate auto-focus; Strong Construction

Heavy; Lens Creep