Reply To: Bre Johnson Photography

[cameraclicker]

I agree with Intuition, I don’t see any obvious reason for the “folks in a tunnel” shot to be tilted.

There are spirit levels that go in the hot shoe (which work pretty well when on a tripod) and the 5D Mk III has a digital level that appears in the viewfinder if you press the right button.  Most of the time I level with DPP, ACR or Photoshop because I find it more accurate and less fussy.