[Brightcolours]

[quote name='JOLYON' timestamp='1285729333' post='3341']

fist of all, thank you very much. but i still a qustion as below,

for you point of view:

---------------------------------------

Image quality (optics):



* Tamron

* Nikon

* Sigma





All are good, though, it is closer than you might think.

===================>>>>>the optics photozone.de had evaluating the nikon and sigma lens. Nikon and Sigma analysis result of quality optics the same are 3.5-Star. and i had hear of Tamron photo coloring yellowish, sure?

[/quote]

Yes, I am sure that the Nikon 80-200 is a bit better than the Sigma. The current Sigma has OS, I am not sure which SIgma you looked at as there are at least 4 different (optically) versions.

I have not seen or heard anywhere that the Tamron has a yellow cast. Yellow cast is something Sigma lenses (used to?) have.

So yes, I am sure.

[quote name='JOLYON' timestamp='1285729333' post='3341']

Close up photography:



* Tamron ==>>photo coloring yellowish???

* Nikon

* Sigma**

[/quote]

Again, I have not seen or heard about a clear yellow cast from the Tamron. Where have you heard that?

[quote name='JOLYON' timestamp='1285729333' post='3341']

Build quality: ====> photozone.de analysis result is nikon 4-star and sigma 4.5-star. so which is clearly.

1. Nikon
   
   
2. Sigma
   
   
3. Tamron
   
   [/quote]
   
   Photozone does not test lenses side by side. At times it can happen that some scores do not really match eachother.
   
   Go to a store which has a big assortment of lenses, and see for yourself, the Nikon is very well built and gives a better impression than the Sigma.
   
   
   
   You do not have to do anything with my opinion, but my opinion is based on something.
   
   
   
   Just a small tip:
   
   Focussing speed and behavior and close up abilities are often way more important to one's photography than small differences in projected image quality and build quality.