Yes, the shift movement will let you eliminate keystoning, and the tilt movement would let you put the plane of the grapefruit into focus even if it's not aligned with the plane of the camera.
Search for "shift" in this article (http://photo.net/learn/architectural/exterior) for a striking comparison, or read this one for simple illustrations (http://photo.net/equipment/canon/tilt-shift). It's surprisingly difficult to find clear illustrations of what tilt is good for right now, but some good triptychs in this one (https://luminous-landscape.com/focusing-tilt-shift-lenses/).
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branchandroot
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Date: 2016-12-20 04:12 am (UTC)Search for "shift" in this article (http://photo.net/learn/architectural/exterior) for a striking comparison, or read this one for simple illustrations (http://photo.net/equipment/canon/tilt-shift). It's surprisingly difficult to find clear illustrations of what tilt is good for right now, but some good triptychs in this one (https://luminous-landscape.com/focusing-tilt-shift-lenses/).