All video output will still be 8-bit.
Sampling for DCI 4K will be increased to a 5632 x 2970 pixel sensor area resulting in a 1.27x Crop factor.
Sampling for UHD will be from a 5472 x 3078 pixel sensor area resulting in a 1.29x Crop factor.
Both modes are accurately down-sampled to their final resolutions.
Existing frame rates will remain the same.
The current 1:1 4K sampling mode will remain an option for situations benefiting from the 1.78x Crop factor.
There will also be new full-sensor 3K modes added including 60fps and HDR 24fps.[…]
FullHD 1080p will also use this 3K full-sensor mode with down-sampling for a noticeable improvement in perceived resolution.
FullHD 1080p will also receive a modest frame rate boost to 72/75fps.
The EOS 5D Mark IV will gain the XF-AFC file format at 120Mbps (4:2:0) and 200Mbps (4:2:2). Both formats should require low enough data rates to accommodate UHS-I U3 type SD Cards.
Reports relating to a possible service job for the 5D Mark IV are the result of the heat sinks on current units not performing well in some environments when used with the newer firmware. […]
The newer firmware will still work in non-serviced cameras, but this may result in premature temperature warnings.
2017-04-15 0:52 發佈
最後再補上這句:Reports relating to a possible service job for the 5D Mark IV are the result of the heat sinks on current units not performing well in some environments when used with the newer firmware
EOS 5D Mark IV Firmware Version 1.0.4
1. Fixes a phenomenon in which a red-colored area may appear at the bottom-center of a captured image when shooting in bulb mode or during a long exposure.
2. Fixes a phenomenon in which the autofocus may not respond when the autofocus is initiated via pressing the shutter button, the AF-ON button or the AE lock button when configured in the custom control menu.
3. Enhances the reliability of communications between the camera and SD card.
4. Fixes incorrect wording on the Finnish language menu screen