cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

5D Mark III - HDMI - Mirroring

shariff01
Apprentice
Hi,

I had recently upgraded to 1.3.6 and it appears that mirroring function isn’t working. I didn’t need that function before but need it now and I am unable to make it work. The camera screen goes blank and the monitor shows all the settings. Interestingly the camera options you can view full screen but when it comes to live vide it has a border around it and a AF point box that doesn’t go away and becomes larger if I go manual mode.

Also, I have tried to connect the HDMI to an HP monitor and also Elgato capture card but in both cases I get consistent 480p/59fps.I have tried to adjust all possible settings and don’t appear to be bettering 1080p/30.

I am hoping not to use ML but is that the only option to make it work on this camera? Also downgrading from 1.3.6 seems difficult and I am concerned if the camera may get bricked.
3 REPLIES 3

JustinTArthur
Apprentice

I have the same problem on a 5D Mark III running firmware 1.3.5. The HDMI output is always 480i59.94 with absolutely no mirroring despite the preference being set. I purchased a brand new Canon HTC-100 mini-HDMI cable just in case. It's the same 480i59.94 on both a BlackMagic UltraStudio Recorder 3G and a LG WebOS OLED TV.

This may have broken somewhere in the 1.3.x firmware range.

JustinTArthur
Apprentice

After downgrading to every possible firmware from 1.3.5 to 1.2.1, I found I still couldn't get more than 480i59.94 output with any display or capture card (shown on less advanced displays as 480p). Finally I took a close look at the mini-HDMI port and found that half of one of the DDC data pads is missing, and it's one that's critical for EDID negotiation. This explains why it never escalates to Full HD. I suspect it could also be why mirroring mode never activates for clean HDMI output. For anyone else having this exact problem of no FHD and no mirroring, chances are you need to replace the HDMI C port (mini-HDMI), which is unfortunately surface-mount electronics.

PXL_20220702_235530555.jpg

do you have the 1.2.1 firmware?

Announcements
01/18/2023: New firmware version 1.1.1 is available for EOS R6 Mark II
01/09/2023: Help ensure your autofocus is properly aligned with a Canon Precision Alignment
01/03/2023: Welcome to CES 2023!
12/08/2022: New firmware version 1.0.5.1 is available for EOS C70
12/07/2022: New firmware version 1.7.0 is available for EOS R5
12/07/2022: New firmware version 1.7.0 is available for EOS R6
11/22/2022: New firmware available for EOS R3, EOS R7 and EOS R10
11/16/2022: We're thrilled to be ranked among the Best Employers for Veterans in 2022 by Forbes.
08/31/2022: New firmware version 1.1.1 is available for RF 70-200mm L IS USM
08/09/2022: New firmware version 1.2.0 is available for CR-N 300
08/09/2022: New firmware version 1.2.0 is available for CR-N 500
07/14/2022: New firmware version 1.0.1 is available for CR-X300
06/10/2022: Service Notice:UPDATE: Canon Inkjet Printer continuous reboot loop or powering down
06/07/2022: New firmware version 1.3.2 is available for PowerShot G7 X Mark III
05/31/2022: Did someone SAY Badges?
05/26/2022: New firmware version 1.0.5.1 is available for EOS-C500 Mark II
05/26/2022: New firmware version 1.0.3.1 is available for EOS-C300 Mark III
05/10/2022: Keep your Canon gear in optimal condition with a Canon Maintenance Service
05/05/2022: We are excited to announce that we have refreshed the ranking scale within the community!
04/26/2022: New firmware version 1.0.1.1 is available for EOS R5 C
03/23/2022: New firmware version 1.0.3.1 is available for EOS-C70
02/09/2022: Share Your Photos is back!
02/07/2022: New firmware version 1.6.1 is available for EOS-1DX Mark III
01/19/2022: READY FOR ANYTHING EOS-R5 C
01/13/2022: Community Update. We will be retiring the legacy profile avatars on 01/20/2022. Click this link to read more.