Body
Overall, the camera is about the same size as the 60D: slightly narrower, but a little deeper.
Back controls
Overall, I like the redesigned controls on the back, except perhaps for the new Quick Control dial/multicontroller. It's the same as before, except smaller -- maybe too small. Otherwise, Canon integrates a lot of the best from its other models, including the combination record/movie toggle control, a new lock switch that's much easier to operate than on the 60D, and the placement of the menu and info buttons for left-hand operation.
LCD
The 70D now incorporates a touch-screen display.
Top controls
The only change here is the addition of a button (located between the shutter and the dial), which brings up the new focus information overlay in the viewfinder.
Mode dial
Canon uncluttered the mode dial by removing all the individual scene presets and making the dial turn 360 degrees. It still only offers one custom setting slot.
Connectors
Although it doesn't have any new connections on it -- it's the same set of mic and wired remote inputs, USB connector, and Mini-HDMI out -- they're now staggered, with separate covers.
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