Tamron Lenses For Canon 7d
Nikon Vs Canon? Sports and glasses?

I wonder if it's worth IOT switch to Canon and get a 7 D-400L with the goal of 100 for shots or just surf must upgrade to a D300S and get a Tamron or Sigma 200-500 150-500. I have little invested in lenses and I will not be just shooting sports. Therefore, it is worthwhile to change or should I just get a Tamron or Sigma superzoom

NEVER change the system of the camera if you can help. You will never recover the additional costs. These are the lens I use on my two D300 and D3 bodies for shooting 14 to 24 mm f/2.8, 24-70 f/2.8, 70-200 mm f/2.8, 200-400 f / 4 and 600 mm f / 4 you know http://www. dxomark.com / index.php / eng / quality of image-database / Compare cams / (appareil1) / 336% 7C0 / (appareil2) / 329% 7C0 / (appareil3) / 296% 7C0 / (Onglet) / 0 / (mark) / Nikon / (brand2) / Canon / (brand3) / Nikon If you have the money to spend buying a new system (Canon 7D and replacement existing lens), Nikon D700 look at the common framework. You can still use older lenses and the D700 is light years before the 7D when it comes to quality I have a colleague who has the Sigma 150-500 that he uses on his Nikon D3 and D200. So far he is very happy with it. For less than $ 1,500 is a steal. My 200-400 mm f / 4 was more than $ 5,000