Tamron vs Sigma

[chief]

Which would be the better lens and are both compatible with my 6d

Sigma 150-600mm 5-6.3 Contemporary DG OS HSM Lens for Canon Tamron A011C-700 SP 150-600mm F/5-6.3 Di VC USD Zoom Lens for Canon EF Cameras

[ebiggs1]

chief,

I have both currently and have had several of both in the past.  There is little to no difference between them.  IQ wise that is.  The Sigma dock is a plus but a small one.  The Tamron is better sealed than the Siggy C, a small plus, I suppose.  It truly is a, your choice, proposition.  Pick one, you can't go wrong either way.

Now if you consider the Sigma 150-600mm f/5-6.3 DG OS HSM Sports Lens for Canon, it is a horse of a different color all together.  The IQ is slightly better than either of the cheaper versions from Tamron or Sigma.  It is built as well as any Canon L lens.  It can use the Sigma dock.  It is big.  It is heavy.  It is fantastic!

I don't have a 6D so I can not tell you they work on a 6D but I can see no reason why they would not.  They all work beautifully on all six of my Canon bodies of differing models.