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Old Apr 8, 2012, 2:11 PM   #51
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Quote:
Originally Posted by iowa_jim View Post
If the two lenses are the same price, go for the canon. The tc might be the issue though. The tamron tc works with the 70-300 SP. I can't say regarding the canon side of things.
Thank you for your reply.
Do you know how they compare to the Nikkor ED 70-300mm AF-S VR though? I tested the Nikon lens and the stabilization and AF speed are good. I know it's possible to use Nikon lenses in Canon cameras. But don't know if the AF works and if the quality is the same.
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Old Apr 8, 2012, 3:59 PM   #52
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Yes you can mount a Nikon lens to a Canon body using this adapter
http://www.bhphotovideo.com/c/produc...t_Adapter.html

It mounts physically, then nothing works, no autofocus, no aperture control it becomes a dumb stop down lens.
Canon and Nikon lenses work differently have different control chips that speak different languages.
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Old Apr 8, 2012, 4:46 PM   #53
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Odd, I have never had an issue with the Sigma lenses I use, nor have heard of any issues from other pros that use them in my association.
(I must include the cavet that my cheapest Sigma zoom lens cost 3200$ and Sigma prime lens was 900$ when I bought them)

Here are a few sites, it you want to check out some work done by pro's using Sigma lenses and equipment.
The US and Canada sites include which Sigma lens was used to make the images. The UK one does not.

Sigma Pro's USA
Sigma Pro's Canada
Sigma Pro's UK

In the end it comes down to you get what you pay for.
If you are looking for inexpensive budget equipment you will get mediocre performance, no matter what the measurbeating stats say about the kit.
But, with today modern equipment even budget kit will produces excellent results if you learn to use it properly.

Quote:
Originally Posted by Electrolyte View Post
I've read bad things about their quality control, the same for Sigma. The quality seems to fluctuate.
Thread seems to have drifted far and wide from the original aps sensor discussion
Interesting article on canon/nikon bodies by Darwin Wiggett and his partner Samantha Chrysanthou, one of them uses Nikon the other Canon.
http://oopoomoo.com/2012/03/personal...rmining-yours/
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Last edited by PeterP; Apr 8, 2012 at 4:59 PM.
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Old Apr 8, 2012, 6:43 PM   #54
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Thread seems to have drifted far and wide from the original aps sensor discussion
I agree. I'm gonna open a new thread in the right forum.

Thank you for your help, Mister.
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