Tamron vs Tamron (70-300mm)

Joined
Mar 18, 2011
Messages
86
Location
New York City
Currently evaluating whether to purchase the VC version or the non VC Di LD version.

I plan to use it on my Sony A850 which has body stabilization. I plan to use it stopped down to F5.6 or F8 and mostly for landscapes so I don't need the lens built in motor.

I've found these two direct comparisons:

http://www.slrgear.com/reviews/showproduct.php/product/1339/cat/23

http://www.slrgear.com/reviews/showproduct.php/product/455/cat/23

It seems the older version without VC has less CA and is sharper in some cases when stepped down 1 stop. This sort of makes sense to me because for the VC version they had to add additional elements, I can see how that can cause a problem with more aberrations and loss in sharpness despite newer coating technologies.

The older one is also less than half the price.

Am I missing anything here or not considering a factor?
 
Joined
Feb 19, 2006
Messages
8,400
Location
LA (Lower Arkansas)
Consider spending an extra $130 and getting the Nikon version. It's an absolutely outstanding performer in it class. Well worth the money.

Or you could pick up a used one for about $350-400.
 
Joined
Nov 21, 2010
Messages
343
Location
Eastern NC
If your Sony is an Alpha-mount DSLR, the lens doesn't have the VC included anyway.......
Tamron site said:
* Image stabilization is an integrated function of Sony Alpha-mount DSLRs and would conflict lens-based IS. Therefore, the Tamron VC function is omitted from models manufactured for Sony Alpha-mount DSLRs.
 
Joined
Mar 18, 2011
Messages
86
Location
New York City
If your Sony is an Alpha-mount DSLR, the lens doesn't have the VC included anyway.......

I've reading because the # of elements and weight is the same, Tamron went the lazy route and didn't remove any of the elements responsible for VC, simply disabled it.
 
Joined
Oct 11, 2007
Messages
2,483
Location
Missouri
I would get the 70-300 VC over the 70-300 VR even if the VC cost more. It's sharper and the VC works better than the VR. 70-300 VC is on my list of future purchases so I'd suggest that one. It is a great portrait lens too from the samples I've seen.
 
Joined
Mar 18, 2011
Messages
86
Location
New York City
Interestingly I think both the Tamron VC and Nikon VR seem to have pretty high CA which I bet is a result of the additional elements necessary for stabilization. The non VC Tamron seems to do much better in CA.

The Tamron VC seems to do much worse than the Nikon VR wide open. Stopped down 1 stop the Tamron VC seems to take the lead to 200mm and from there up the Nikon VR seems to do slightly better.

http://www.slrgear.com/reviews/showproduct.php/product/992/cat/13

http://www.slrgear.com/reviews/showproduct.php/product/1339/cat/23

Now if you compare the FF results of the Tamron non VC to the VC, 1 stop down from max, the non VC does tremendously better.

http://www.slrgear.com/reviews/showproduct.php/product/455/cat/23
 

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