New for IBC, the EOS 5D Mark IV is a significant upgrade for the camera line that popularised shooting video on a DSLR; it now offers internal 4K (4096x2160) recording at up to 30fps in 8-bit, 4:2:2 Motion JPEG at up to 500Mbps. It can also do HD 50/60p at up to 180Mbps (i-frame) and 1080p HDR movies.
The camera offers improved auto focus for video, and has built-in WiFi and GPS. However, it lacks some video features (peaking, C-Log, 4K HDMI output and Ultra HD recording).
It uses a Super 35-size crop for 4K, so it should match other digital cinema cameras quite nicely, but anyone wanting it for shallowest full-frame depth of field may be disappointed.
As a stills camera it also gets lots of improvements, including a Dual Pixel Raw file format, allowing greater post production adjustments, such as (slightly) changing the focus point, shifting foreground bokeh or reducing image ghosting.
Canon also has two new high-performance L-series lenses: the EF 24-105mm f/4L IS II USM, with improved four-stop image stabilisation and quieter focusing during video; and the EF 16-35mm f/2.8L III USM with advanced autofocus and nine-blade circular aperture.