6D + 17TSE vs D800 + 14-24 + PS6 pc

The Canon with the tilt-shift will give you FAR better results. Also, with the TS-E lens it is easy to stitch so not only would you have perspective correction you also would have more MP.

With that said...you do know that Nikon makes a 24mm TS lens right?? You could use the 24mm TS lens from Nikon to have perspective correction, and then use stitching to get a wider angle of view....just sayin:)

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