Gordon Laing explains the updates in firmware v1.1.0 for the Canon EOS R5

Canon Rumors Guy

CR Pro
Jul 20, 2010
Canon has released a firmware update for the Canon EOS R5, this version will be 1.1.0.
Firmware Version 1.1.0 incorporates the following fixes and enhancements:

Useful messaging is now displayed when [HDMI display: Camera+External monitor] and [Overheat control: on] settings are enabled.
When using certain RF lenses for movie shooting, the in-lens image stabilization mechanism has been improved.Fixes a phenomenon in which the “Slow Synchro” setting screen is not accurately displayed, when the language is set to English.
Fixes a typo displayed on the communication setting screen, when the language is set to Korean.
Connectivity during FTP transmission has been improved.
Fixes a phenomenon, in which the card access time may take longer, when using certain CFexpress cards.
Temperature detection and shooting time control in video shooting have been improved. In addition, the total shooting time when the short-time recording and power-on/off are performed repeatedly at room...

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EF 800L
May 29, 2019
That is enough improvement that I can't see heating ever getting in my way. An aside to those who would whine about having to shut the camera off - if it isn't cooling as fast turned on, it is also eating your battery, so turning it off makes sense on at least 2 counts.


5D4 + R5
Jul 13, 2020
Out of all the reviewers, Gordon is one of the only ones worth anything. Constructive, intelligent, and not a sensationalist. Adult enough to be nuanced and careful even when criticism is warranted, and able to realize when it is not.

His conclusions make a ton of physical sense. The amount of capability in this camera generates real, problematic heat, just like any decent test shows where people aren't forcing it or disabling safeties. Canon is using 3 sensors to protect internal components for long life of the components, just like any other modern high speed circuit that throttles or shuts down (hard drives, CPU, tons of things have thermal limits). Overheating ASIC and sensors repeatedly can and will degrade them.

Very sensible that ambient temperature is measured in order to predict record time as a function of starting temp plus expected temp rise over time in that mode. That isn't actually a bad way to do it if you want to keep a conservative safe limit for the dies of the chips and sensor. Sure, if the product didn't have the huge sensor and processor activity and strong IBIS and weather sealing, it would cool better and run longer or indefinitely, but we are back to square one where any intelligent testing shows real thermal issues and the product does what Canon says without any conspiracy. People can hack all they want or complain that Canon should sample the temperature constantly and raise the limit, but without the whole engineering picture it is irresponsible to say we know better.

In my own thermal tests in hot sun, the camera was quite predictable and did overheat, and disabling IBIS and the EVF made things cool much faster and last longer. It makes perfect sense to me that even idle, just running the processor and EVF and IBIS, produces enough heat inside the sealed body that must flow away from the sensitive components where temp sensors will be placed. So no conspiracy after all, just a sub optimal algorithm that has now been improved. Can it be improved more without compromising safety and long term reliability of the camera? Can lighter codecs help? How many people actually need this and cannot just use an external recorder vs all the whining and negativity?

Sadly the comments on Gordon's video are the same confirmation bias trash we knew they would be be already: proof of the cripple hammer, fake timer, blah blah blah. I'd say these people are all paid shills for another brand, but the truth is sadder than that- average video crowd is just that dense and spoiled.
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I'm New Here
Mar 4, 2020
Update went well although it was stuck on 0% for what seemed minutes :) In hindsight I did the upgrade with a rather empty battery so that's a thing to check. Anyway, I did some shots, made some movies. All is well but I did not check heating issues yet.


EOS M6 Mark II
Jun 5, 2020
Update went well although it was stuck on 0% for what seemed minutes :) In hindsight I did the upgrade with a rather empty battery so that's a thing to check. Anyway, I did some shots, made some movies. All is well but I did not check heating issues yet.

I was stuck at 0% for a while, too...and the whole time I was thinking "I SHOULD'VE SWITCHED TO P MODE LIKE THE INSTRUCTIONS STATED!!". (I have pretty much every mode except for M and Av disabled, so I was too lazy to go in and enable P) :LOL:
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CR Pro
Aug 29, 2016
Well this is embarrassing.....

I took a sledgehammer to my brand new R5 after Chelsea Northrup's husband and full-time viagra salesman told me that the 4K was unusable.
But now Gordon says that, providing I carry around a small British refrigerator, that I should be able to shoot the biopic that I have been planning, at 120 fps, called "Andrew slays the Giant. The story of one man, armed with only a giant chip on his shoulder, defeating the nemesis of all aspiring Hollywood DoPs".

Lights, camera.... oh wait..... what's that flashing red symbol mean?