I just got a new Sigma 150-500 f5-6.3 APO DG OS HSM telephoto.
At this point I'd say it's great. It does have the Hypersonic focus (AF-S in Nikon terms)
Digital corrected optics for full frame and DX, the APO glass, and most important the Optical Stabilizer.
While looking for a lens like this I did notice that there was a dirth of this combination of "critical"
features in lenses under the "sell a child" price level. I think the manufacturers are just now getting to
be able to produce these lenses. Nikon and Canon have pushed the envelope so much with including AF-S
and VR technology into the pro-sumer end of the market, the other manufacturers have to start including them to stay competative I believe.
Sigma just announced the replacement for the 50-500 which will also (it looks) replace the 150-500 and
it has all the features. However with a $1K bump to $2.5K it is now close to the pro-only category, the old 50-500 was around $2K without the OS and the 150-500 was around $1.5K.
The problem I had was find a full frame lens with the features which didn't require me becomeing a double amputee.Since the old 150-500 looks to be phased out you can get it at "bargain" pricing, nominally $900 but occasionally as low as $850. So if you are looking at the long lenses this is a good one (150-500) for the price, or if you can live without OS the older 50-500 is good as well, although I haven't seen a price drop on that yet.
As for the price of the monster 200-500 you showed...that's a sell the farm baby
Greg aka Watchin..."just watchin the world go bye, trying to understand the picture."
"Life is a grand adventure! Not a guided tour." oWo
Nikon D-700, Nikon lenses, Alien B flashes and lots of junk...