Canon R5 Announced with 8k
- Thread starter Ken1212
- Start date
Clermond
Veteran
he did below the video. Just give him credit by watching
1.Internal Recording to the SD Card, Overheated at 28:58
2. Internal Recording to the CFexpress, Overheated at 27:33 C2001102
Then I switched over to external recording with my Atomos Shogun, again, capturing 24P 422LT 4k.
3. External Recording, SD Card, Screen on, Overheated 15:02
4. External Recording, No Cards, Screen off, Bateries died 2h49
5. External Recording, SD Card Inside, Screen off, Overheated at 1h53
6. External Recording, CFEXPRESS Card Inside, Screen off, Overheated After 2 Hours
7. External Recording, No Cards, Screen on, Overheated 41:56
Bassman2003
Veteran
The screens make more sense than the cards. But it all might be linked together. Either Canon will fix this or make it worse by eliminating the behavior! We will see now that the cats are out of the bag. I am very intrigued to see how Canon is going to handle this as there are a lot of eyes on them right now and this is their new flagship stills/hybrid camera.
This actually makes a lot more sense than the presence of the cards alone being the determining factor in overall runtime. Because when the internal screen is on and the camera is outputting to an external recorder, the camera has to produce two different versions of the video: a clean 4K version for the HDMI output and a version with overlays that is scaled to the resolution of the internal screen. So you could imagine that this requires the camera to do additional processing that generates more heat internally.
And this also fits with the behavior of the camera's Overheat Control menu option, about which the manual says:
"Overheat Control: Set to [On] to conserve battery power and help prevent the camera from overheating while waiting to shoot. As a result, it may enable you to record movies over a longer period.
Image quality on the standby screen may differ from image quality on the screen during movie recording."
Which suggests that at least one of the things the Overheat Control setting is doing is reducing the display resolution of the internal screen, and this evidently causes less heat to be generated internally. So you could imagine that having the screen off entirely uses even less power (and generates less heat) than sending it a low resolution image.
This is also fairly consistent with Gerald Undone's tests of external recording, as he was able to get about 75% longer external record times with Overheat Control set to ON, which indicates that the camera really does generate less heat when generating a lower-res image for the internal display.
Yeah, if you have the screen set to power saving mode, it seems like you can wake it up periodically throughout the external recording session with minimal impact on the overall recording times (this is based on other tests with multi-hour record times). But leaving the internal screen on continuously does seem like it may be an issue.
Guess you have to rely on the camera's autofocus tracking for the most part in this kind of operation or go full manual focus using the larger screen on the external recorder.
It would be interesting to know what the performance is like if you use wi-fi control, but have the screen off. This would allow you to touch focus from a phone or tablet, but it would also require the camera to generate a secondary scaled image for sending over wi-fi, which might have some thermal impact.
Bassman2003
Veteran
It probably has been shown but has anybody done image analysis on the externally recorded footage that went for 2+ hours to KNOW it was 4kHQ? With all of the hocus pocus going on it would not surprise me to find out the pixel binned 4k is being sent out to the external recorder in certain circumstances.
ahalpert
Major Contributor
Uh....yeah of course we do
Liam Hall
Veteran
Clermond
Veteran
I only could watch it on my iPad but it looks fantastic. Love the chicken.
Liam Hall
Veteran
Thanks Clermond. I like their eggs!
So, just so everyone is clear. This is straight out of the box. Filmed in Clog. Just a standard technical LUT applied. No grading. WB is all over the place as I simply left it on 5600K.
Exposure was done with the inbuilt meter and nothing else. No histograms or zebras.
All the lenses were EF. I used the Canon adapter with drop-in Vari ND. The ND gets progressively colder the more strength you apply. It's minimal and easily correctable.
Normally, I shoot 90% on primes, and my primes mostly work great with the R5, but I wanted to see how my zooms fared as they are older than my primes.
I cut this in FCPX. I haven't used FCPX since the day it was launched. It's improved...
In my mind, and from the testing I've done, which has included stress testing the codecs, ISOs etc, the R5 is a great little camera. Some of the YouTubers making mischief should hang their heads in shame.
The first part is AF testing, then there's an informal comparison between normal and HQ, then there's some IBIS.
Shout with any questions or comments.
andykwilkinson
Well-known member
Only watching it on my iPhone right now but the hand-held IBIS shots look incredibly impressive. Will watch it properly soon. Thanks for posting.
ahalpert
Major Contributor
Can't tell the difference between normal and HQ on my phone. So that's something. AF looked pretty good. How are the focus transitions? I was watching a lens comparison recently between EF and RF 70-200 and the RF seemed to transition more smoothly, though not by much.
Very, very pretty colors (or "colours" if you must)
How was the AF on the 24-70 mk1? Actually I guess the IBIS test was AF too so it was pretty darn good...
Very, very pretty colors (or "colours" if you must)
How was the AF on the 24-70 mk1? Actually I guess the IBIS test was AF too so it was pretty darn good...
Yes, it was verified that 4K HQ is in fact is being sent out to the external recorder in this test:
And I believe Gerald Undone found the same thing in his tests of external recording. So it seems pretty clear that the camera is changing the sensor readout mode, even if not recording internally.
Liam Hall
Veteran
The AF works great on my 24-70mm. I'm slightly shocked to be honest.
You can see the difference between 'normal mode' and 'HQ mode' if you zoom-in and pixel peep like a "Tony 'no idea' Northrup." But the 'normal' is way, way better than we were led to believe by the early YouTubers.
AF works better on my newer Sigma lenses than the older ones, but it's still great on those. It works really well on all my Canon lenses. I'm still working out how to control it better. I'm fairly new to this AF thing...
G
Guest
Guest
Yeah, I feel like the way they compared the 4K modes was by zooming in to 400% and going "Aha, it is less sharp!" By their methods, the Alexa would have been inferior as well, likely.
I just don't know where all the 2K advocates went, and now people are complaining about a bad 4K downsample. LOL. The R5's lower quality 4K is still supersampled 2K in many ways! =)
Clermond
Veteran
That’s my own experience. I shot my first test and thought it was HQ.
Feed back from my colleague: that’s sharp.. I liked to too - but it was standard. ��