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5d Mark IV stops recording when locked off not while panning


Anyone else see this issue.  FYI:  I understand the limitations of cards and buffer memory.  Read on...


In this cse while the 5d is locked off, shooting Log C, I am lucky to get :20s of continuous recording




If I whip pan the camera like a monkey on crack, I can record up to 2 plus minutes continuos. I stopped whip panning at 2:10 and the camera stopped recording at 2:30. 


Anyone?  know how to fix this glitch?  


quite annoying.


Jimmy [Removed personal info per forum guidelines]





What type of footage are you capturing? DCI 4K or HD?  What card(s) are you trying to record to?  e.g. don't attempt to record DCI 4K to the SD card slot.  Even U3 Class 10 cards will only guarantee around 30 MBps (240 Mbps).  And the MJPEG codec used by DCI 4K needs 500 Mbps.  CF cards will give you sustained writes of 65 MBps (520 Mbps).


Next question... what size card are you recording to?  DCI 4K eats tons of space.


In terms of why panning would record more... my only thought is that with the insane amount movement, you'd end up with an extreme blurry mess.  But, that may compress very well.  Whereas when you're capturing more detail, more data needs to be written (less compression).   So you're either hitting the sustained write issue or perhaps filling up the card.


Finally, I am compelled to provide the following advice: for video work, do consider a dedicated video unit (camcorder, cinema camera).


EOS 5D IV, EF 50mm f/1.2L, EF 135mm f/2L, 600EX-RT (x6), ST-E3-RT
EOS C70, RF 24-70 f/2.8L IS, EF-EOS R 0.71x

I am a cinematographer and tech specialist of sorts by trade 30 years behind the lens. I was running into the issue of the camera stopping after :20s and wondered if it was a sleep mode issue, hence the whip panning, to keep the camera awake. It was purely a test out of frustration because the project I am shooting is all locked camera, takes would be great if the lasted up to 1:00 in C log mode. So for now we still have no answer, other than a glitch with the firmware...

Are there any warnings before it shuts down?

Have you formatted the card in the camera lately?

Have you called Canon support? They can try it with their camera to see if it does the same thing.

Camera displays recording has stopped. Yes I have done all the standards, reformatting and such example same card yesterday: whip panning shot for 3+ miuntes.  I stopped whip panning and camera stopped recording in 10 seconds.  


I went in and changed auto shut off still stops recording.


This is quite curious and if any of you have a 5D Mark Iv   Id be curious to know if you have a similar issue.


next up yes   contacting canon.  



What do you mean by "locked off"?

by locked off I mean static, no panning no tilting.  no one is operating the camera.  

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