Here are some key advantages of the 70D with ML that spring to mind. How great they are depends how you like to shoot video.
Key video advantages in the 70D with ML include
- zebras for highlights & other curves/waves etc.
- Magic zoom PIP zoom on LCD, and or focus peaks for MF/AF focusing
- rgb parade with warnings
Cinemascope (1:2.35 aspect) Video Resolutions and Durations with full AF options.
- 10 bit raw, 1600x680 @30fps. Max resolution continuous for 30fps.
- 10 bit raw, 1824x774 @30 fps, 709 frames about 23.6s.
- 10 bit raw, 1824x774 @24 fps. Max resolution continuous 24fps.
Cinemascope / Near FHD to 2.5k. These are Zoomed with MF, the Zoomed AF only does centre point Single Zone
- 10 bit raw, 3X, 1856x790 @24fps. Max resolution continuous, 24fps, also note 3X has no alias/moire.
- 10 bit raw, 5X, 1920x818 @30fps, was 494 frames about 16.4s.
- 10 bit raw, 5X, 2240x954 @30fps, was 197 frames about 8s.
- 10 bit raw, 5X, 2550x1072 @30fps, was 124 frames about 4s.
Cinemascope /Slo-Mo (Note some camcorders have only 4s buffers for slo-mo)
- 10 bit raw, 1824x466 @60fps, was 759 frames, about 12.6s. Note vertical has to be stretched, but all AF options.
- 10 bit raw, 5X, 1920x804 @60fps, was 525 frames about 8.75s. 5X zoom uses MF.
Highest Bit Depth Cinemascope
- 14 bit raw continuous video for 720p @24 fps, full AF options. H264 720p for high ISO slo-mo.
** 80D greater sensor DR for H264 video, yet 70D raw video has highlight/lowlight recovery over its DR, more bits used the harder you can push it in post. Yet raw video supports lower ISO 400 max, because of hot pixels, and shadow banding. If you want to shoot low light high ISO with 70D H264 is good to ISO 1600 **
- 3rd party VAF to reduce moire and aliasing
- ML for stills HDR has more bracketing options, and dual ISO
- ML for timelapse has a valometer and silent / shutter click free, supports 4k video
- ML has clean HDMI output, 422 8bit H264 at 1600p horizontal max. resolution (needs crop)
Common strengths with 80D
- 3rd party flat or log picture profile improves DR (est. 1.5 stops) in H264 over standard Canon profiles
- PDAF with touchscreen for focus pulls
- PDAF with facial recognition permits tracking of slow to fast moving objects
- PDAF with facial recognition achieves parfocal like behavior when zooming with non-parfocal glass
- PDAF on LCD for stills shooting with focal extenders, means you arent limitted by f-stop for AF (birders/action)
- 3X zoom video does a digital zoom, which some have used to about 6X
- 3X zoom video does not line skip (no moire or aliasing)
- twistflex LCD supports shots at low/high angles
- Remote H264 video shooting can be done by wire with EOS on windows or DSLR controller app on Android, with drag/drop focus set. There are some 3rd party wireless router solutions (ex. TGP, but have not used these so others have to confirm their status).
These are just a few