Canon EOS-1D X Mark III Advanced User's Manual page 951

Drive system
Drive mode
Continuous shooting speed
Maximum burst
Single shooting, High-speed continuous shooting, Medium-speed continuous
shooting, Low-speed continuous shooting, Single Soft shooting, Soft continuous
shooting, Soft low speed continuous shooting, Self-timer: 10 sec, Self-timer:
2 sec
Drive Mode
One-Shot AF
High-speed
continuous
AI Servo AF/
*1
shooting
Servo AF
One-Shot AF
Medium-speed
continuous
AI Servo AF/
shooting
Servo AF
One-Shot AF
Low-speed
continuous
AI Servo AF/
shooting
Servo AF
Soft continuous shooting
Soft low speed continuous
* 1: May be lower depending on conditions such as shutter speed, aperture, state of
aperture during continuous shooting, use of flash, use of flicker reduction, battery level,
temperature, subject conditions, brightness (as when shooting under low light), type of
lens, type of power, and if internal memory becomes full (which temporarily disables
shooting).
* 2: With the electronic shutter, continuous shooting speed is equivalent to the speed in
high-speed continuous shooting.
* 3: With the mechanical shutter, continuous shooting speed is approx. 8.0 shots/sec.
JPEG Large: 1,000 shots or more
HEIF Large: 1,000 shots or more
RAW: 1,000 shots or more
RAW+JPEG Large: 1,000 shots or more
RAW+HEIF Large: approx. 350 shots
* In viewfinder shooting with a 325 GB card conforming to Canon testing standards
* Varies depending on shooting conditions (such as when JPEG/HEIF image quality is
set to 8, as well as the subject, memory card brand, ISO speed, Picture Style, and
Custom Functions)
951
Viewfinder Shooting
Max. approx. 16 shots/sec.
(setting range: 3–16 shots/
sec.)
Approx. 10 shots/sec.
(setting range: 2–15 shots/
sec.)
Approx. 3.0 shots/sec.
(setting range: 1–14 shots/
sec.)
Approx. 8.0 shots/sec.
(setting range: 2–8 shots/
sec.)
Approx. 3.0 shots/sec.
(setting range: 1–7 shots/
sec.)
Live View
*2
Shooting
Max. approx. 20
shots/sec.
Approx. 10 shots/
3
sec.*
Approx. 3.0 shots/
sec.
Approx. 10 shots/
3
sec.*
Approx. 3.0 shots/
sec.