Adventure photo journalist Jay Goodrich highlights how he overcomes diffraction issues with today's digital cameras and lenses by stacking multiple focal point images in Adobe Photoshop CS6 via Adobe Lightroom 4.
This is a very handy technique for all shooters IMO. I suggest using it on many shoots. At least shoot for and then have your post guy do all the mucky muck of the tweaking. Think of it all as information.
While I am on the topic, ALWAYS shoot plates. Always. Clear the set and take 5 steps back and shoot a clean set. My god people, almost every job the clients asks for more space on the left and we are trying to figure out how to recreate a airport / field / set / bar / gold course / stadium / you name it.