This lens is pretty sharp out to about 400mm. At 500 its acceptable only. If you are trying to shoot wildlife and birds it works well but it certainly cannot compete with the better Nikon long lenses but then again it is only about $900.00 and the good Nikons can run 4 to 5 grand.

Consistent Output; Easily Interchangeable; Strong Construction

Heavy

The Sigma 150-500mm f/5-6.3 DG OS HSM is the company's latest offering in the extreme telephoto zoom budget marketplace and it kicks in with a few eyebrow raising surprises! Replacing the 170-500mm model that is now quite long in the tooth the new lens has a good specification for its price.

Fast focusing; Good stabilisation system; Excellent value for money; Relatively compact

OS system slightly noisy; Tripod foot could be half inch longer to make more comfortable handle

A super-telephoto zoom lens with optical stabilisation ideally suited to wildlife photography. This super-telephoto zoom lens costs around £695 and sports a silent Hyper Sonic focusing motor and optical stabilisation.

Price; Optical Stabilisation; HSM Focusing; Build Quality; Resolution at shorter focal lengths

Falloff in resolution at 500mm; CA at 500mm; 86mm

Jag rekommenderar objektivet till alla som är ute efter ett prisvärt långt objektiv. Det går att handhålla vid bra ljusförhållanden och det hänger med att fota flygande fåglar med. Objektivets svagheter kommer inte som någon överraskning och det dras inte med några onödiga designfel.

Sigma 150-500 mm ger en fantastisk räckvidd till den digitala systemkameran och fungerar bra att fotografera vilda djur och fåglar till en av marknadens lägsta kostnader; Man ska komma ihåg att det här är ett stort objektiv som väger över 1,5 kg och det kräver lite annorlunda arbetssätt en kortare...

Det här ett av de billigaste långa objektiven på marknaden och naturligtvis har man kompromissat i konstruktionen; Ytfinishen är mer rå en sofistikerad, bildstabiliseringen oväsnas överraskande mycket och drar en hel del ström och objektivet är ljussvagt och kantskärpan är inte den bästa vid full...

I take pictures for a baseball team. The lens takes good pictures and brings the subject close to you. Also with the 150mm you can still get close action shots without switching the lens.

Consistent Output; Durable; Easily Interchangeable; Fast / accurate auto-focus; Strong Construction

Heavy

Good range but slow low chromatic aberation excelent value for money

Heavy not as fast as the canon 100-400 F4L lens; The material marks easily

Impresive up to 400mm gets a little weak after this OS works well; If you stop down at 500mm just stop down one stop helps with the sharpness; If thats a problem with a Digital SLR just increase the ISO used on 50D body

Sigmaniacs and assorted bloggers have, over the years, dubbed Sigma's longer tele zooms with nicknames that seem to have stuck. The 50-500mm f/4-6.3, for example, is known as "the Bigma." The 300-800mm f/5.6 is the Sigmazilla.

This lens is by far better than expected. Ive read reviews where they said it was soft on the edges wide open. I havent found this to be true. This lens is built like a tank. I know its not a Nikon lens but I think its just as good.

zoom; quality; price

Its not 600mm

These are very early impressions after having had my lens for about two hours.

Focal length; build quality; and image quality for price

f/6,3 at 500mm is limiting; Vignetting might be a problem in some photos

The Sigma APO 150-50mm lens is a moderately fast, super-telephoto zoom designed to work with both APS-C and full-frame DSLR cameras. It offers quite useful close focusing (7.2 ft) and two modes of what they deem "optical stabilization" (OS.