If u will use an external recorder like Atmos (or any other) to record 4K videos (Since 8K limited to internal recorder only). Then you can record your videos for more than 1hour + without any issues. The Heat generation problem occurring in Canon EOS R5 camera due to CF express card slots.
NoLife Youtube channel was the first to point out this strange phenomenon, for the test they have used external power source and an external recorder. It was very clear that Canon EOS R5 camera image processor and sensor generate a minimal amount of heat and he was able to record 4 hours of Videos.
2. Canon R5 DOesn’t Over Heat – Carlos Quintero
After noLife others also started testing out the camera, Carlos Quintero only removed the CF express card of the camera and kept the battery inside. He was able to record over an hour + HQ 4K video.
According to the latest information coming through the rumor mills, Canon has delayed the shipment of the Canon EOS R5 camera till November 2020. It looks like Canon is working to FIX the overheating issue, and the expected shipment start date is Nov 2020.
Sony A7S III vs Canon EOS R5 – We have done specs comparison of the recently announced cameras. Let’s take a look
1. Sensor Comparison – Sony A7S III vs Canon EOS R5
If we look at the sensor of both cameras then it looks like they are made for a different purpose, The Sony A7S III uses 12MP BSI CMOS sensor chip which is, of course, 2X faster than of A7S II and now allow us to push the base ISO range up to 40. So, sensitivity wise the sensor will sure outperform the Canon EOS R5 45 MP sensor. But, due to the lower 12MP resolution, the Sony A7S III camera limited to a specific group of shooters.
Get the Sony A7S III Camera from B&H Store | Get EOS R5 from Amazon.com | B&H Store
2. Video centered camera, still photographers may suffocate with 12MP resolution
The 12MP resolution will prevent many professional users to use the Sony A7S III as their primary still shooting machine. On the other side, with 45MP resolution and nearly 2X More Shooting speed, the Canon EOS R5 may become the first choice for wedding, event, and sports shooter.
Lens Mount
Sony E
Canon RF
Camera Format
Full-Frame (1x Crop Factor)
Full-Frame (1x Crop Factor)
Pixels
Actual: 12.9 Megapixel
Effective: 12.1 Megapixel
Actual: 47.1 Megapixel
Effective: 45.0 Megapixel
Maximum Resolution
4240 x 2832
8192 x 5464
Aspect Ratio
1:1, 3:2, 4:3, 16:9
1:1, 3:2, 4:3, 16:9
Sensor Type
CMOS
CMOS
Sensor Size
35.6 x 23.8 mm
36 x 24 mm
Image File Format
JPEG, Raw, HEIF
JPEG, Raw, HEIF
Bit Depth
14-Bit
14-Bit
Image Stabilization
Sensor-Shift, 5-Axis
Sensor-Shift, 5-Axis
3. Sony A7S III – Best Low-light Shooting Mirrorless Camera of 2020?
As we all know Sony is the only FF sensor maker that creates FF BSI CMOS sensor commercially for FF sensor cameras. Canon EOS R6 with lowest 20MP resolution after A7S III uses a plain CMOS sensor and due to that the ISO performance of the camera is slightly better than Canon EOS R5, But, not as good as of Sony A7S III camera. One of the best things with the Sony A7S III camera is you can push your ISO from base ISO 40 to 204800. Sony A7S III undoubtedly best camera when you want to work with natural light aka low-light environment.
4. Sony A7S III forced limitations – Less Continuous shooting speed than 45MP EOS R5
Despite having a new 12MP sensor with 2X readout speed and a brand new image processor, the shooting speed of the camera is even lower than the Canon EOS R5 camera with 45MP massive resolution. It’s a clear indication that Sony wants to protect the sales of their upcoming flagship A9 series camera by limiting the speed of A7S III.
ISO Sensitivity
Auto, 80 to 102400 (Extended: 40 to 409600)
Auto, 100 to 51200 (Extended: 100 to 102400)
Shutter Speed
1/8000 to 30 Second
Bulb Mode
Mechanical Shutter
1/8000 to 30 Seconds Electronic Front Curtain Shutter
1/8000 to 30 Seconds Electronic Shutter
1/8000 to 0.5 Seconds
Up to 10 fps at 12.1 MP for up to 1000 Frames (Raw) / 1000 Frames (JPEG)
Up to 8 fps at 12.1 MP
Up to 6 fps at 12.1 MP
Up to 3 fps at 12.1 MP
Mechanical Shutter
Up to 12 fps at 45 MP for up to 180 Frames (Raw) / 350 Frames (JPEG) Electronic Shutter
Up to 20 fps at 45 MP for up to 83 Frames (Raw) / 170 Frames (JPEG)
Interval Recording
Yes
Yes
Self-Timer
2/5/10-Second Delay
2/10-Second Delay
5. Sony A7S III vs Canon EOS R5 – Best Video Camera
As you can see the Canon EOS R5 camera is capable to deliver 8K resolution and you can record it internally at 4:2:2 10bit. But after 20 min of continuous use of 8K video mode, users may face the overheating issue. The good news is for the first time, the Canon Mirrorless camera is using the Oversampling method while using the entire sensor resolution areas to create a 4K video file.
Sony, on the other hand, limited to 4k Video recording mode up to 60FPS, and as per Sony claims the camera doesn’t overheat even you use it for 1 hour of time. But as usual no 6K or 8K recording mode available in Sony due to the lower resolution sensor.
6. Sony A7S III is more Usable than Canon EOS R5 in real-world condition
If you are shooting long interviews and creating a short movie than it would be more feasible to use the Sony A7S III camera than of Canon EOS R5. At the same time, the Sony A7S III camera doesn’t have any recording limit and continuously records your videos till your card runs out.
Recording Modes
H.265/XAVC HS 4:2:2 10-Bit
UHD 4K (3840 x 2160) at 23.976p/25p/29.97p/50p/59.94p/100p/119.88p [50 to 280 Mb/s] H.265/XAVC HS 4:2:0 10-Bit
UHD 4K (3840 x 2160) at 23.976p/25p/29.97p/50p/59.94p/100p/119.88p [30 to 200 Mb/s] H.264/XAVC S-I 4:2:2 10-Bit
UHD 4K (3840 x 2160) at 23.976p/25p/29.97p/50p/59.94p [240 to 600 Mb/s]
Full HD (1920 x 1080) at 23.976p/25p/29.97p/50p/59.94p [89 to 222 Mb/s] H.264/XAVC S 4:2:2 10-Bit
UHD 4K (3840 x 2160) at 23.976p/25p/29.97p/50p/59.94p/100p/119.88p [100 to 280 Mb/s]
Full HD (1920 x 1080) at 23.976p/25p/29.97p/50p/59.94p/100p/119.88p [50 Mb/s] H.264/XAVC S 4:2:0 8-Bit
UHD 4K (3840 x 2160) at 23.976p/25p/29.97p/50p/59.94p/100p/119.88p [60 to 200 Mb/s]
Full HD (1920 x 1080) at 23.976p/25p/29.97p/50p/59.94p/100p/119.88p [16 to 100 Mb/s]
Raw 12-Bit
DCI 8K (8192 x 4320) at 23.976p/24.00p/25p/29.97p [2600 Mb/s] H.265 4:2:2 10-Bit
DCI 8K (8192 x 4320) at 23.976p/24.00p/25p/29.97p [680 to 1300 Mb/s]
UHD 8K (7680 x 4320) at 23.976p/25p/29.97p [680 to 1300 Mb/s]
DCI 4K (4096 x 2160) at 23.976p/24.00p/25p/29.97p/59.94p/100p/119.88p [170 to 1880 Mb/s]
UHD 4K (3840 x 2160) at 23.976p/25p/29.97p/50p/59.94p/100p/119.88p [170 to 1880 Mb/s]
Full HD (1920 x 1080) at 23.976p/25p/29.97p/50p/59.94p [28 to 230 Mb/s] H.264 4:2:0 8-Bit
DCI 8K (8192 x 4320) at 23.976p/24.00p/25p/29.97p [470 to 1300 Mb/s]
UHD 8K (7680 x 4320) at 23.976p/25p/29.97p [470 to 1300 Mb/s]
DCI 4K (4096 x 2160) at 23.976p/24.00p/25p/29.97p/50p/59.94p/100p/119.88p [120 to 1880 Mb/s]
UHD 4K (3840 x 2160) at 23.976p/25p/29.97p/50p/59.94p/100p/119.88p [120 to 1880 Mb/s]
Full HD (1920 x 1080) at 23.976p/25p/29.97p/50p/59.94p [12 to 180 Mb/s]
External Recording Modes
Raw 16-Bit
4.2K (4264 x 2408) up to 59.94p 4:2:2 10-Bit
UHD 4K (3840 x 2160) at 23.976p/25p/29.97p/50p/59.94p
Full HD (1920 x 1080) at 23.976p/50p/59.94p
Full HD (1920 x 1080) at 50i/59.94i 4:2:0 8-Bit
UHD 4K (3840 x 2160) at 23.976p/25p/29.97p/50p/59.94p
Full HD (1920 x 1080) at 23.976p/50p/59.94p
Full HD (1920 x 1080) at 50i/59.94i
4:2:2 10-Bit
DCI 4K (4096 x 2160) up to 59.94p
UHD 4K (3840 x 2160) up to 59.94p
AAC LC, AC3, Dolby Digital 2ch, Linear PCM (Stereo)
AAC, Linear PCM
Live Streaming
Yes
7. Autofocus – Sony A7S III vs Canon EOS R5
Canon has now upgraded its DPAF system and now the camera quickly tracks animal eyes and even bird eye while shooting videos or still. The AF system is also very fast and accurate. The Canon EOS R5 supports you even when you are using the 20FPS continuous shooting speed. More or less both of them are camera makers makes the world best AF system, you be not disappointed from any of the two camera.
Focus Type
Auto and Manual Focus
Auto and Manual Focus
Focus Mode
Continuous-Servo AF (C), Direct Manual Focus (DMF), Manual Focus (M), Single-Servo AF (S)
Continuous-Servo AF (C), Manual Focus (M), Single-Servo AF (S)
Autofocus Points
Phase Detection: 759
Contrast Detection: 425
Phase Detection: 1053
Autofocus Sensitivity
-6 to +20 EV
-6 to +20 EV
8. Sony A7S III features a better viewfinder
Sony A7S III us using a higher resolution viewfinder with a more magnification ratio than of Canon EOS R5. And, Canon EOS R5 features a better display unit system than of A7S III.
Viewfinder Type
Electronic (OLED)
Electronic (OLED)
Viewfinder Size
0.64″
0.5″
Viewfinder Resolution
9,437,184 Dot
5,760,000 Dot
Viewfinder Eye Point
25 mm
23 mm
Viewfinder Coverage
100%
100%
Viewfinder Magnification
Approx. 0.9x
Approx. 0.76x
Diopter Adjustment
-4 to +3
-4 to +2
Monitor Size
3″
3.2″
Monitor Resolution
1,440,000 Dot
2,100,000 Dot
Monitor Type
Articulating Touchscreen LCD
Free-Angle Tilting Touchscreen LCD
Physical
Battery
1 x NP-FZ100 Rechargeable Lithium-Ion, 7.2 VDC, 2280 mAh (Approx. 600 Shots)
1 x LP-E6NH Rechargeable Lithium-Ion
Dimensions (W x H x D)
5.07 x 3.81 x 2.74″ / 128.9 x 96.9 x 69.7 mm
5.43 x 3.84 x 3.46″ / 138 x 97.5 x 88 mm
Weight
1.35 lb / 614 g (Body Only)
1.62 lb / 738 g (Body with Battery and Memory)
9. Conclusion:
For still shooters, EOS R5 is the best option and Video A7S III is more user friendly.
Get the Sony A7S III Camera from B&H Store | Get EOS R5 from Amazon.com | B&H Store
Canon finally issued an official statement related to the heating issue of Canon EOS R5 and Canon EOS R6 camera. Take a look at what Canon saif related to the heating issues of Canon EOS R5 and Canon EOS R6 camera.
Canon Press Release Related to Canon EOS R5 and R6 Heating issue
The EOS R5, one of the latest additions to Canon’s full-frame mirrorless camera line, offers class-leading autofocus with high-resolution and high frame rate video recording options using the maximum width of the full-frame sensor at high bit rates. Inevitably, this combination of features has the potential to generate some significant heat, which will limit recording time.
Canon has taken several steps to manage the potential for overheating, including:
Magnesium alloy was used in the body to dissipate heat away from internal components
An “overheat control” function to reduce heat generation when the camera is in standby
In regard to the installation of a fan: The decision not to install a fan within the body was made in order to maintain the EOS R5’s compact size, lightweight construction, and weather resistance.
Before recording starts, the EOS R5 and EOS R6 display an estimate of the recordable time based on the current camera temperature and the set recording mode.
Canon has published and included below the approximate recording and estimated recovery times for 23°C / 73°F environments and ensures that the camera will warn users when it is getting too hot. Additionally, tips to reduce overheating as well as recovering time are listed below.
What about the EOS R6?
Like the EOS R5, the EOS R6 offers powerful movie recording and stills capabilities within a compact body design. At the highest frame rates and resolutions, heat is inevitably generated. We believe the EOS R6 offers the best in class performance, especially for enthusiast photographers and video content creators.
Canon EOS R5 will soon have 120FPS in Full HD video mode, according to the latest rumors we have, Canon is working to improve the Canon EOS R5 and Canon EOS R6 more and more, take a look at the details below
Upcoming Canon EOS R5 Firmware Update:
FullHD 120p
Adding a low bitrate mode for RAW & IPB in all recording modes
Canon EOS R5 Heating issue is now floating up. As per the latest reports, the Canon EOS R5 camera gets heat up once you reach the recording time limit in 8K or 4K [over-sampling] video recording mode. Once the time limit is reached the Camera needs a standby time of 10min after that in 4K video recording mode you can record an additional 10min clip and then again you have to take a 10min break. More details in table below
Canon EOS R5 Over-Heating Details
Movie Recording Time Size & Limit
Recording Time MAX
8k RAW 30p
20 Min
8k 30p
20 Min
4k 120p
15 Min
4k 60p NO CROP
35 Min (30 + 5 Min)
4k 60p YES CROP – 5.1K Oversampling
25 Min
4k HQ 30p – 8.2k Oversampling
30 Min
4k 30p
No Limit By Heat / No Overheating issue
So, if you are recording 4K videos in normal mode, you will face no overheating issue. It’s better to invest in the Canon EOS R6 camera if you are interested in recording 4K videos with you Canon Camera. Since the Canon EOS R6 also creates 4K HQ videos by 5.2K oversampling and we haven’t heard any overheating issues related to Canon EOS R6.
Finally, we have the official sample images of the Canon EOS R5 camera. The Canon EOS R5 camera uses a 45MP High-Resolution sensor and advance DPAF sensor paired up with Digic X image processor for an amazing performance. Get Canon EOS R5 from B&H Store
One of the best thing I like about Canon EOS R5 is you can shoot up to 20FPS with AF/AF, the camera also features large buffer so you can save upto 80RAW files in a single row.
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