Tamron SP 24-70mm F/2.8 Di VC USD

Keith Z Leonard wrote:

You are a bit stuck then, I think. The 16-35 f2.8 is also intended for a 35mm format camera rather than APS-C. Yes it'll work, but it's intended as a wide angle fast zoom for the 35mm format and isn't the best option on APS-C. If you are desperate for weather sealing (some L lenses are, some are not) then you are going to compromise and buy a lens intended for a 35mm format. In that case I would probably suggest the 24-105 as it's quite versatile and has IS, or the Tamron which you already like.