Anybody thought about this thing actually fitting on a Wimberley or other brand gimbal head? (It sure wouldn't work on a regular ballhead!) It would almost have to have a specially-made tripod/tripod head....
The Nikkor 400/2.8 is $7800, the 600/4 runs about $2k more, and the 500/4 about $600 less.....
In the past, Sigma hasn't been anywhere near 90-95% at the long end in pro glass- the Nikkor 300/2.8 is about the closest comparison we can make, the Nikkor is $4499 for the USA version and the Sigma is $2599 (B&H USA only- Canon is $3750.)
Tripod-wise it should be fine on a large Gitzo, head-wise we'll have to see what they do about a tripod collar/foot. So long as it's not more than about 30lbs, my Gitzo should support it...
If the 600 f/4 is $9800, then I think it's very possible that it's more than $10,000, even if you were to start comparing Canon super-tele prices. This thing has a zoom and a teleconverter designed for it and included. It's also not f/4 like many of these long primes are......it's an f/2.8. That's probably worth several thousand dollars.
Then there's the ability to zoom. To me, the zoom is going to make this thing much more attractive than a prime to many people.
But recently, Sigma has started pricing their pro lenses closer to Canon prices, and I really don't think it's unfair because when they make a good lens, it's usually as good as anything Canon and Nikon make (along with Pentax and Olympus, I'm sure). The Sigma 100-300 mm f/4 is one such lens.
Sigma's prices are still cheaper than lenses from the big names, but it's not dirt cheap anymore. They're a "good deal", but not a "steal." Maybe saying that Sigma's prices are 90% that of Canon's prices was wrong, but it's probably closer to 80-90% on a lot of their newer pro level glass. The Sigma 150 mm f/2.8 is only $100-200 less than a Nikon 180 f/2.8, according to SLRGear. How about the very small price difference between the Nikon 80-200 mm f/2.8, and the Sigma 70-200 mm??
I would be concerned about the tripod collar/foot, as even in the photo this "Sigzilla" thing looks massive -- not just heavy and long, but very large in all-over diameter. Looking at the foot in the photo I don't think it would fit on a Wimberley they'd have to make a special plate, and really, I'd think a gimbal head would be a safer way to use it than a traditional ballhead, but balancing that thing on a gimbal would be tricky!
Then there's the ability to zoom. To me, the zoom is going to make this thing much more attractive than a prime to many people.
That's 'cause my Gitzo can beat up your Gitzo![]()
I like "The Compensator"
Somehow I don't think that name will go over well in Japan
Somehow I don't think that name will go over well in Japan