Canon EOS Rumors

Canon EOS-1D X Mark III Summary

This site contains affiliate links to products and services. We may receive a commission for purchases made through these links.

The Canon EOS-1D X Mark III will be announced on Monday, and we are just posting a summary of the known features and specifications for the new camera. There are still some questions to be answered, specifically what processors the camera is going to use. We suspect the camera will have at least dual DIGIC 9 processors. The Canon EOS-1D X Mark III is going to need a lot of processing power to match its RAW video and buffer specifications.

Will it have DPAF?

Yes, it will, with a caveat. You will get DPAF in 1080p and 4K at 23p/24p/30p. You will not get DPAF in 4K 50p/60p or RAW video shooting.

The WFT-E9 wireless transmitter is all-new for the Canon EOS-1D X Mark III and will be announced alongside the new flagship Canon DSLR. Canon is boasting industry-leading file transfer speeds and reliability.

What is HEIF?

High Efficiency Image File Format (HEIF), also known as High Efficiency Image Coding (HEIC), is a file format for individual images and image sequences. It was developed by the Moving Picture Experts Group (MPEG) and is defined by MPEG-H Part 12 (ISO/IEC 23008-12). The MPEG group claims that twice as much information can be stored in a HEIF image as in a JPEG image of the same size, resulting in a better quality image. (Wiki)

Canon EOS-1D X Mark III Highlights:

  • 20.1mp
  • 16fps Mechanical
  • 20fps in Liveview
  • ISO 100-102,400 (extends up to 819,200)
  • Dual CFexpress card slots
  • 4K 60p with 10-bit 4:2:2 Canon Log (No DPAF in 4K 50p/60p recording)
  • 5.4K RAW internal video recording (No DPAF in RAW)
  • No crop in 4K or RAW video recording
  • RAW Buffer: 1000+
  • RAW + JPEG Large buffer: 1000+
  • RAW + HEIF Large buffer: approx. 350
  • $6499 USD
  • Announcement January 6, 2020 (EST)
  • Preorder the Canon EOS-1D X Mark III
  • Shipping to start mid-February 2020? (Nok)

You can read the full specifications here.

H. Jones

Aug 1, 2014
Is the first spec list not just literally the 1Dx mark II specs? The list with 20 megapixels even says Cfast 2.0 and 16 fps, and the mark III definitely uses CF Express. Also says no log recording. I cant find anything in the first "leaked" list that isn't from the 1DX mark II. The other spec list that says pixels not specified looks much more accurate.

Edit: as Pekr also just pointed out, Dual Digic 6+ is also the same as 1Dx mark II.
  • Like
Reactions: 5 users


Aug 26, 2015
They are just posting anything again without verifying anything just to get more views.

Those are not the real specs, except the few that are on the end which were already presented with the development announcement.

People are already out shooting with the production version of the camera, so it is not that far off.
  • Like
Reactions: 6 users
Sep 14, 2019
This article is just embarrasing. Did anyone even bother to actually look at specs before reposting this?
  • Like
Reactions: 2 users


EOS M6 Mark II
Jan 27, 2015
As others above, this deffo isn't the correct final spec. I can imagine retailers etc preparing the product page, creating a copy of the older model and editing from there in readiness. You want the page up and indexed by Google, even if final detail isn't ready for public view.
  • Like
Reactions: 1 user


Oct 19, 2011
Middle Europe
Hmmm.... I do not think Canon would dare to make such an mini-evolution of their flag-ship. Not in an Olymic year in Japan. Alkso keep in mind the 24MP of the A9....
Cannot believe this are the final specs.
Where do they have these specs? Maybe someone wrot older specs into "specs sheets" as an placeholder

bhphotovideo writes: CFexpress
Last edited:
  • Like
Reactions: 1 user


CR Pro
Apr 16, 2016
North Carolina
I am surprised they are using dual digic6 processors. You would think after 4 years they could have done a bit better. I suspect this may contain some erroneous info.


I'm New Here
Oct 9, 2018
First reaction: Oh, come on Canon! Why? What's up with the mediocre spec advancements for another $5,500?

10 minutes later after considering all options: Well, I can't switch systems and lenses after spending all that money, and Canon did give me a few more fps and more focal points in live-view than the previous model, so...


But then yet, the real specs haven't been released yet, so there is still hope!....maybe.

tenor (1).gif


  • tenor.gif
    2.1 MB · Views: 1,048
Last edited:
  • Haha
  • Like
Reactions: 9 users