Everyone Else Has One, Why Not us? Tamron to Announce 100-400mm F/4.5-6.3 Di VC USD

By Canon Rumors We’ve seen the patent, and soon we’ll see the lens. Tamron is going to join Sigma and Canon with their own 100-400mm lens. The Tamron will be faster than the Sigma at the short end with an f-stop of 4.5 and slower than Canon at the long end at f/6.3. The new lens will obviously … → continue…

From:: Canon Rumors