Further technical details about the EOS R3

Nokishita released what seems to be a small paper on the R3, and some of the technical details have come out of it.

The high-speed readout of the new CMOS sensor significantly suppresses image distortion caused by electronic shutters. Rolling shutter distortion is reduced to about 1/4 compared to the "III" electronic shutter.

As far as we are aware the refresh speed of the 1DX Mark III was around 32ms at its worst, so this should mean somewhere sub-8ms readout speed (or better than 1/125th of a second).

This seems to be confirmed by;

For the first time as his EOS with a high-speed sensor, all shutter methods (mechanical / electronic front curtain / electronic shutter).  The strobe can be dimmed by the electronic shutter at 1/180 sec. and up to approx. 15 frames/sec.

I think this is our reliable measure of the electronic shutter readout speed of 1/180th of a second which is more or less in line with the above commentary.  Don't ask me what dimmed is here. I assume the translation is awkward and this is stating that it is 1/180th of a second shutter speed max flash sync speed with electronic shutter. Which is - well, pretty darn good.

For the first time in his EOS series except "CINEMA EOS SYSTEM", his continuous shooting for 30 minutes or more is possible. Up to 6 hours. It can be recorded and supports long-term continuous shooting such as documentary shooting.

This should make quite a few people happy.  I'm not sure what the 6 hour limitation is - perhaps heat?

Achieved a mass of about 1,015g, which is about 71% of the "EOS-1D X Mark III"

Still a beast of a camera, but lighter than the 1DX Mark III

The entire translated contents are shown below. using DeepL for most of it.  Note to other sites, link back to me if you take this . it was alot of work.  Original is included as a download.

High speed and high image quality realized by the newly developed CMOS sensor and the DIGIC X image engine
The newly developed full-size back-illuminated stacked CMOS sensor with approximately 24.1 effective megapixels, the first of its kind in the EOS series, and the DIGIC X image engine enable the camera to deliver high speed and high image quality with AF/AE tracking of up to 30 frames per second during electronic shutter shooting.

The newly developed full-size back-illuminated stacked CMOS sensor with approximately 24.1 effective megapixels, the first in the EOS series, and the DIGIC X image engine enable high-speed continuous shooting of up to approximately 30 frames per second with AF/AE tracking during electronic shutter shooting. The new CMOS sensor's high-speed readout allows the camera to capture images at a high speed of up to 30 frames per second with AF/AE tracking and high image quality. The high-speed readout of the new CMOS sensor significantly reduces image distortion caused by the electronic shutter. "Compared to the electronic shutter of the EOS-1D X Mark III. Compared to the electronic shutter of the EOS-1D X Mark III, rolling shutter distortion is reduced to about 1/4.  Blackout-free shooting keeps images displayed in the electronic viewfinder (EVF) even during high-speed continuous shooting.

Blackout-free shooting, which keeps the image displayed in the electronic viewfinder (EVF) even during high-speed continuous shooting, allows you to frame a fast-moving subject without losing sight of it. When shooting with a mechanical shutter or electronic first curtain, high-speed continuous shooting of up to approximately 12 frames per second is possible.

A high sensitivity of ISO 102400 is available for still image shooting. The camera has a high sensitivity of ISO 102400 for still images, which allows you to shoot dynamic subjects with low noise even in dark scenes such as at night or indoors. When using an RF lens, the lens side is not affected.  When using RF lenses, the optical image stabilizer on the lens side and the image stabilizer in the body are cooperatively controlled. When using an RF lens, the optical image stabilization mechanism on the lens side and the image stabilization mechanism in the body are cooperatively controlled to achieve the world's highest image stabilization of 8.0 stops.

The camera supports still image/movie recording in the HDR PQ format. The camera also supports still image/movie recording in the HDR PQ mode, in which bracketing is performed at high speed and three photos are combined in the camera.

The camera is also equipped with the HDR mode, which takes bracketed shots at high speed and combines three shots in the camera. This allows for rich tonal image expression.

Advanced high-speed, high-accuracy, wide-range AF for superior tracking and operability
The "Dual Pixel CMOS AF II" provides high-speed, high-precision, wide-area AF with excellent tracking performance.
Dual-pixel CMOS AF II provides high-speed, high-precision, wide-area AF with excellent tracking performance. ・During electronic shutter shooting, AF and tracking operations can be performed simultaneously at up to 60 fps. This enables highly accurate AF even during high-speed continuous shooting at a maximum of approximately 30 frames per second. 

The camera is capable of detecting the eyes, face, head and torso of people, and the eyes, face and whole body of animals (dogs, cats and birds). It also supports the detection of the eyes, face, head and torso of people, and the eyes, face and whole body of animals (dogs[, cats and birds]).  In addition, it supports whole body and spot detection for vehicles (cars and motorcycles in sports). The "EOS iTR AF" is an algorithm that uses deep learning technology. The EOS iTR AF X algorithm, which utilizes deep learning technology, has been enhanced to achieve improved detection functions and high subject tracking performance. 

It is the first Canon digital camera to feature line-of-sight AF when shooting still images. The camera moves according to the movement of the pupil looking through the viewfinder. The AF frame can be quickly moved and the subject switched by moving the pointer, which moves with the movement of the eye looking through the viewfinder, to the subject to be photographed and pressing a button. The AF frame can be moved quickly and the subject can be switched by pressing a button.

A low-luminosity focus limit of EV-7.5 has been achieved. This allows the camera to perform AF even in dark environments where it is difficult to see the subject with the naked eye.

The fastest AF speed in the EOS R series, up to approx. 0.03 seconds, is achieved.

Movie performance to meet a wide range of production needs
With the high-speed signal readout of the new CMOS sensor and the high-speed processing of the DIGIC X image engine, RAW data (12bit) of 6K/60P movies can be captured in a single shot. The high-speed signal readout of the new CMOS sensor and the high-speed processing of the DIGIC X image engine enable internal recording of 6K/60P movies in RAW data (12-bit). 4K/120P high frame rate movie recording is possible. 4K/120P high frame rate movie recording.
It is possible to capture smooth images and obtain detailed and natural slow motion effects while maintaining the clarity of 4K. High quality 4K movies can be generated from a wealth of 6K data. 4K/60P video with oversampling without cropping. This enables 4K/60P video with over-sampling without cropping, and delicate video expression with reduced moiré and noise.

The excellent focus control performance of "Dual Pixel CMOS AF II", including a wide range of brightness measurement and high performance subject detection The superior focus control performance of the Dual Pixel CMOS AF II, including a wide range of brightness and high performance subject detection, supports efficient shooting.

Canon's unique Log gamma "Canon Log 3" is equipped. Canon's unique Log gamma "Canon Log 3" is equipped.
Canon's unique Log gamma, Canon Log 3, makes highlight tones less blown out than with conventional Canon Log, enabling rich tonal expression even in high-contrast scenes.

For the first time in the EOS series (excluding the CINEMA EOS SYSTEM), continuous shooting of more than 30 minutes is possible. It can record up to 6 hours. The camera can record up to 6 hours, making it suitable for long continuous shooting such as documentary shooting.

Pursuit of reliability and operability to support the video production of professional and high amateur users
In addition to the high-definition vari-angle LCD monitor, the camera is equipped with the same dustproof and splashproof performance as the flagship EOS-1D X Mark III. The camera is equipped with a high-definition vari-angle LCD monitor and is dustproof and splashproof to the same level as the flagship EOS-1D X Mark III. The camera has a highly reliable body with an integrated vertical grip and a high-definition vari-angle LCD monitor with approximately 4.15 million dots.

The camera is equipped with a highly reliable body with an integrated vertical grip and a high-definition vari-angle LCD monitor with a resolution of approximately 4.15 million dots, enabling a high degree of freedom in shooting. The exterior of the camera is made of magnesium alloy, which is highly resistant to shock and durability and has excellent electromagnetic shielding effects.

High rigidity and light weight

High rigidity and light weight at the same time. The camera body alone is lighter than the EOS 5Ds. When the battery and CFexpress card are included.  The camera body alone is lighter than that of the EOS 5Ds, and with the battery and CFexpress card included, it weighs approximately 1,015g, or 71% of the weight of the EOS-1D X Mark III.

The new "Multi-Accessory Shoe" has advanced communication functions. The "Multi-Accessory Shoe" with advanced communication functions is newly equipped. The new "Multi-Accessory Shoe" with advanced communication functions allows you to control an external strobe when shooting still images, digitally input audio when shooting movies, and use networks by connecting to a smartphone. The new Multi-Accessory Shoe allows you to control an external strobe during still image shooting, digitally input audio during movie shooting, and connect to a smartphone for networking.

For the first time in an EOS camera, the high-speed sensor can be used with all shutter types (mechanical, electronic first curtain, and electronic shutter). The high-speed sensor enables the first EOS camera to support light control during continuous shooting in all shutter modes (mechanical, electronic first curtain, and electronic shutter). The strobe can be dimmed by the electronic shutter at 1/180 sec. and up to approx. 15 frames/sec. The strobe can be dimmed at 1/180 sec.

The camera is equipped with a "silent shutter function" that allows you to set all the settings related to sound. In addition, the LCD monitor can be turned off at all times.  In addition, the LCD monitor can be turned off at all times, allowing you to quickly shoot with consideration for sound and light.

The camera is powered by the LP-E19 battery pack, which can be shared with the EOS-1D X Mark III.
The camera is equipped with dual slots for CFexpress cards (Type B) and SD memory cards (UHS-II compatible).
Compatible with "Robotic Camera System CR-S700R". "The CR-S700R is compatible with the CR-S700R robotic camera system and the CR-BP200 base plate kit.

With the "Base Plate Kit CR-BP200", remote shooting of still images is possible.

• Nokishita