Welcome to the 4 way 24-70mm f2.8 showdown. Part 2 coming very soon.
LINKS:
When listed, the Tamron will be here: http://goo.gl/KS9cB
Nikon here: http://goo.gl/VLkrm (Amazon: http://goo.gl/mVhDY )
Canon: http://goo.gl/yVoNz Mark 2 here: http://goo.gl/NJs1j
Or in Australia, here: www.dirtcheapcameras.com.au
Use the code 'ThatNikonGuy ' for 2% off the lenses: http://goo.gl/I5aoJ