Another place to check out lens test would be http://slrgear.com :thumbsup:
I never heard of this lens before, can I verify this guy. It is known as Sigma AF 18-200mm f/3.5-6.3 DC OS? Actually I prefer original lenses because heard of some reliability issues with 3rd party stuffs, or maybe I should just give up Canon and switch to Nikon :think:
http://forums.clubsnap.org/showthread.php?t=291248
There was an earlier similar thread. I got tired of waiting for Canon to make its 18-200 so bought the Nikon 18-200 VR instead. Like what the others said, I would not recommend switching system just for one lens.
Some comments from my experience in using the Sigma 18-200 DC, Sigma 18-200 OS and Nikon 18-200 VR:
The pictures are quite sharp at all focal ranges for all 3 except for the Sigmas at 150 to 200mm.
The Nikon focuses much better at low light being a brighter lens at f5.6 vs f6.3.
The OS and VR are very good and almost no need to carry tripod. I could get 100% sharp shots at 1/25 at 200mm for the VR and OS lenses. At 1/15 I get more sharp shots with the Nikon vs the Sigma. The 4-stop VR seems better than Sigma's OS.
All 3 lenses suffer from zoom creep.
Build quality of Nikon is much better. I would not pay $800 for the Sigma OS as the depreciation would be great. The EX finish of the Sigma can come off.
My 18-200 is always stuck to the body. So alternatively you could buy one of those ultra-zoom from Panasonic or Fuji or Olympus if you are worried about dust etc. I have the FZ-20 but was quite impressed with the Fuji S8000fd (only $600 plus) at the recent Comex.![]()
I believe theres an adapter to let you do that.Look in the mass orders thread.Think theres a thread on this adapter
Well,i personally dun believe in superzooms coz to make such a long zoom,there're bound to be compromises in quality.
closest is 17-85 IS..... or 24-105 F4L.
Hmmm 24-105 F4L, price for that atleast above 1k?? wat about 28-135mm f/3.5-5.6 IS USM??
You will lose out on the wide angle. 28mm is not very wide on a 1.6x crop body. 24-105L retails at around 1.6k if I'm not wrong.
I've a friend who mounts a Nikon macro lens(non VR one) to his 20D using an adapter but you'll lose the AF and have to use MF all the way.by the way can Nikon VR 18-200mm mount on Canon body???
Well,i personally dun believe in superzooms coz to make such a long zoom,there're bound to be compromises in quality.
The truth is that trying to design a 11x zoom lens involves huge compromises. And whilst the Nikon is better than Sigma or Tamron, the laws of physics and optics dictate
I am not saying they are not useful. You can still get good shots out of them - but bear in mind the limitations, especially in terms of resolution and distortion. And if all you do it 4R prints, these problems tend to be much lessened.
I only have 2 zoom lenses - the 10-22 and 17-40. Each with a zoom ratio below 3. I like my photos sharp....
oh ya...i saw about the adapter, i tot the way he say as if nikon as direct mount for canon...
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