A close cousin to the APO 150-500mm F5-6.3 DG OS HSM lens, which has also been reviewed on the Photo Review website, Sigma's APO 120-400mm F4.5-5.6 DG OS HSM lens can be used on both 'full frame' and 'APS-C-sized' DLSR cameras as well as traditional 35mm SLRs.

I have owned this lens since July 2008. I use it for Pow-Wows, nature shots, wildlife. Its a great lens, very well built....I've dropped it from about 3 feet up and it hit the sidewalk, I thought I would be picking up pieces, but afterwards it works just like new.

Durable; Easily Interchangeable; Quick Focus; Rugged; Sharp Focus; Strong Construction

Heavy

This is the best telephoto zoom lens for Canon for that money. I compare it with 100-400 and 70-200 Canon's and Sigma won at 200mm. It is sharper both of them. Colors little bit different but fine. Bokeh better on Canons 70-200 only at F2.8. But Sigma sharper and better results handhold.

Durable; Sharp Focus; Strong Construction

Heavy

The OS takes some time of getting use to anything else my wild life/surfing pictures are really great.

Price, Sharp, and Over all Performance; I bought the Canon 100-400mm F/4L but returned it after 4days when my friend recommended my this lens and never looked back

n/a

Originally posted 2008-06-16 on Optyczne.pl Lenses whose focal lengths start at around 100 mm and end at 400 mm are interesting proposals for many advanced photographers. While instruments of 70-300 class, by virtue of their affordable price and still acceptable dimensions, are often chosen by...

too weak image quality at 400 mm; large weight and dimensions compared to the competition; bad work against bright light; mediocre accuracy of the focusing mechanism

Yes, I would recommend this to a friend

Clear Optics; Easy To Use; Firm Mount; Strong Construction

Slightly slow focusing

If you need a versatile telephoto zoom lens for your SLR, then consider

Gary Wolstenholme takes a look at this 3.3x super-telephoto zoom from Sigma with optical stabilisation.

Priced well; Good build quality; Optical Stabilisation; Silent focusing with full-time manual override

Prone to flare when used without the supplied lens hood; Loose zoom mechanism suffers with zoom creep; Hunts for focus in low light conditions

Not a bad lens for the money this Sigma can be quite sharp and reasonably quick to focus if you know how to use it and your camera to their maximum potential. This is not a point and shoot type of lens , it does require your input to get the best out of it.I found it quite heavy when lugging it all...

Cost effective; High build quality; Smooth focusing; Quiet,accurate HSM AF motor; Great adjustable tripod leg mounting shoe; Zoom creep lock

Soft wide open at maximum zoom/aperture; Heavy; Autofocus can hunt a bi,t but once locked on to the general target area is very fast

A 3.3x zoom lens covering super-telephoto focal lengths, with optical stabilisation to aid hand held shooting.

Priced well; Good build quality; Optical Stabilisation; Silent focusing with full-time manual override

Prone to flare when used without the supplied lens hood; Loose zoom mechanism suffers with zoom creep; Hunts for focus in low light conditions