Canon EOS 5D Mark IV firmware update will change 4K crop factor and tweak other settings

5d4
Canon EOS 5D Mark IV

Canon EOS 5D Mark IV: Amazon | B&H Photo | Digitalrev | eBay | Adorama | Canon USA

At a glance:

  • 30.4MP Full-Frame CMOS Sensor
  • DIGIC 6+ Image Processor
  • 3.2″ 1.62m-Dot Touchscreen LCD Monitor
  • DCI 4K Video at 30 fps; 8.8MP Still Grab
  • 61-Point High Density Reticular AF
  • Native ISO 32000, Expanded to ISO 102400
  • Dual Pixel RAW; AF Area Select Button
  • Dual Pixel CMOS AF and Movie Servo AF
  • 7 fps Shooting; CF & SD Card Slots
  • Built-In GPS and Wi-Fi with NFC

The upcoming Canon EOS 5D Mark IV firmware update appears to change a few things in the EOS 5D Mark IV’s feature set. First ad foremost, the firmware update is said to add C-Log to the 5D4’s capabilities, which for sure will make happy a lot of videographers.

While firmware has not yet been released, this appears to be a big update. Some of the tweaks seem to need a modified heat sink. Existing EOS 5D Mark IV units do not have this new heat sink but can be retrofitted. Future models will have it.

The less, the changes coming with the firmware update have leaked over the web. Canon Rumors summed up what’s going to change, and what is not:

  • 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.

Stay tuned…

  • Thomas E.

    I wonder how much it will cost to add the heat sink to the camera?

  • Tiago Carvalhas

    what about the 1dx mark 2? Will it get this firmware also?

  • Robert Grayston

    This is a pretty amazing firmware update. Makes no sense why they wouldn’t have mentioned a future firmware update at the cameras launch like the GH5. A lot of people would have jumped ship to Sony thinking canon was not serious about video anymore.

    • MdB

      I think this is most likely to do with the 6D II than the GH5 or any other competitors (although they may play a part). The 6D II seemingly has roughly the same video capabilities as the 5D IV, so they are upping the 5D IV as the 6D II comes out. I don’t think they could have launched the 6D II without any sort of 4K.

  • Wade Marks

    Interesting update, in that it not only involves a firmware update but a hardware update as well. So maybe call it the 5d mark IV mark II? :)

    It’s always hard to read into these things, but it seems like an admission by Canon that their video specs on the 5d iv were not that well received by the video community. They certainly could have released the camera with these specs if they had wanted to.

    It will be interesting to see how the whole hardware upgrade shakes out. For instance, for those wanting to buy a 5d iv, many will probably want to wait for the newer hardware, rather than the hassle and expense of shipping in for a hardware upgrade.

    What of pricing? For the hardware upgrade? For the models in inventory without the upgrade…will they be discounted? Will the price of a new 5d iv go up because of this? What about the resale value of the 5d iv’s already purchased? How will one distinguish between the two different versions of the camera?

    This is why I think this is a Canon reaction to a shifting marketplace that they underestimated. Otherwise a whole lot of trouble, not because of software upgrade, but due to hardware upgrade.

  • MdB

    Exciting update, will wait until official but this might finally get me into a 5D IV (want to know more details about the update and shipping products etc). Fixes all the major issues with the video of the 5D IV, not only is there less crop but will also improve low light performance. Better codec, C-Log are huge improvements and make this camera infinitely more useful. Zebras and peaking you can get on a $200 monitor and aren’t a huge issue, but the fundamentals were off previously. 3K 60fps is pretty awesome as well.

  • Jon Hellier

    Are these numbers correct?

    1) Sampling for DCI 4K will be increased to a 5632 x 2970 pixel sensor area resulting in a 1.27x Crop factor.
    2) Sampling for UHD will be from a 5472 x 3078 pixel sensor area resulting in a 1.29x Crop factor.
    3) The current 1:1 4K sampling mode will remain an option for situations benefiting from the 1.78x Crop factor.

    Check:
    1) sqrt(5632^2 + 2970^2) / 4630 (diagonal pixels of DCI 4k) = ~1.38 (not 1.27)?
    2) sqrt(5472^2 + 3078^2) / 4406 (diagonal pixels of UHD 4k) = ~1.42 (not 1.29)?
    3) sqrt(6720 ^2 + 4480^2) / 4630 (diagonal pixels of DCI 4k) = ~1.74 (not 1.78)

    • CW Steve

      This rumor is not coming from my own sources. Seems like an early April joke, let’s hope it’s not

  • If it´s coming in that form – Kudos to Canon. But why not delivering from the beginning?
    Most people (which waited for the Mk.IV for video) switched now to Sony or Panasonic …