The builtin flash popup is now fully mechanical and the flash can’t be raised programmatically. An unexpected change that’s made more annoying by the fact that the flash button no longer doubles as a shortcut to the flash menu which was a very convenient feature in the 80D.
There’s focus peaking in Live View. I suspect the 90D and M6 II firmwares are largely identical, obviously excepting features depending on hardware unique to either body.
Focus bracketing is there, but may only be supported by specific lenses.
The panning mode is interesting, and there are a handful of lenses which support sort of extra panning assist.
The electronic shutter mode does not support continuous shooting, which is likely to frustrate some people.
The electronic level is still just single-axis, which is a shame. If the 6D2 and the RP have a dual-axis level, the 90D deserves it as well.
There are still only two f/8 lens+extender combos that support AF points other than the center one. Though it’s not like I could afford any of them anyway.
Some buttons can be assigned more functions than on the 80D (eg. One-Shot/Servo AF toggle to the * button), but not on the level of Canon’s higher-end bodies.
The manual is silent on any IQ differences regarding cropped vs. uncropped 4K, only describing it as a way to get a bit more reach. But the crop factor is so small that there’s obviously some technical reason behind it. My theory is the camera records 6K and downsamples to 4K, which is in line with the better IQ that some Canon reps apparently mentioned in Atlanta.
There's no longer movie digital zoom. On that note, would have been nice if they had kept 3840x2160 center crop recording as an option.
There's clean 8- or 10-bit 4:2:2 HDMI output.
