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>hyperfocal distance
Learn hyperfocal distance on your different lenses.
Carry a tape measure in gear bag for shots where you need to nail perfect focus. Tape measure is also a great tool to see DOF and exactly how aperture affects dropoff.
Try shooting tethered to tablet or laptop. I found a free app for androids to control DSLR. In liveview, it can auto or manually focus. Best feature imho were blue highlights that appear exactly on what's focused.