Sensor. The story of the Canon EOS 70D begins and ends with its 20.2 megapixel, APS-C CMOS image sensor. It's absolutely unique, with two photodiodes sitting under a single shared microlens at each pixel location. This, as we've described in much more detail further up the page, allows Canon to provide for on-chip phase detection at every pixel location over almost two-thirds of the sensor's surface area.
The main issue is autofocus; DSLRs shoot aesthetically pleasing video with shallow depth of field, but actually keeping what you want in focus—let alone tracking your subject anywhere—is extraordinarily difficult. Even when cameras get it right, most often it's the result of a noisy, staccato performance by the camera's autofocus motor. Enter: the Canon EOS 70D (MSRP $1,199.99 body-only) and its Dual Pixel AF technology, allowing for quick, easy, smooth autofocus performance in video.
It is clear the best macro lens for Canon EOS 70D is form Zeiss. Both Zeiss 50mm, 100mm lenses are great Macro lens for 70D. If you need cheap one, the EF-S 60mm f/2.8 Macro is another great lens.