Canon EOS-1D X Mark III vs Fujifilm X-S20

In this comparison, we will evaluate the Canon EOS-1D X Mark III and the Fujifilm X-S20, highlighting the advantages of each over the other, discussing their pros and cons, shared strengths and weaknesses, and providing a rating based on their available features and specifications to assist you in choosing the one that best suits your needs.

Canon EOS-1D X Mark III was introduced in January 2020 and Fujifilm X-S20 was introduced in May 2023. Let us first list highlights of the models.

Now that we've looked at the most essential specifications and gained a basic understanding of these cameras, we can delve into more details and see the differences between them.

This section shows those features and specifications which are the reason to choose Canon EOS-1D X Mark III over Fujifilm X-S20.

This section shows those features and specifications which are the reason to choose Fujifilm X-S20 over Canon EOS-1D X Mark III.

We already listed pros and cons of each model. However, you may also find useful to look at their common strengths and weaknesses shown side-by-side.

Screen

Canon EOS-1D X Mark III has a 3.2" Fixed screen with 2,100k dot resolution and Fujifilm X-S20 has a 3.0" Fully Articulated screen with 1,840k dot resolution. Fully articulated screen makes Fujifilm X-S20 selfie and vlogger friendly and generally very useful for video shooting. Both models feature touchscreen which has advantages such as easy menu navigation, intuitive controls, quick setting adjustment and most importantly a Touch-to-Focus functionality allowing users to select a specific point on the screen where they want the camera to focus. This feature can be helpful for achieving precise focus in both photo and video recording.

Viewfinder

Canon EOS-1D X Mark III has a built-in Optical (pentaprism) viewfinderFujifilm X-S20 has a built-in 0.39" Electronic (OLED) viewfinder with 2,360k dot resolution. They both have 100% coverage.

Canon EOS-1D X Mark III features a 20.1 megapixel Full Frame CMOS sensor with dimensions of 36 x 24 mm and a total area of 864 mm². Its native ISO range is 100 - 102,400 and expands to 50 - 819,200 in boosted mode. Fujifilm X-S20 features a 26.1 megapixel APS-C BSI-CMOS sensor with dimensions of 23.5 x 15.6 mm and a total area of 243.4 mm². Its native ISO range is 160 - 12,800 and expands to 80 - 51,200 in boosted mode.

Fujifilm X-S20 has BSI-CMOS sensor, short for Backside Illuminated Complementary Metal-Oxide-Semiconductor sensor. In traditional CMOS sensors, the wiring and circuitry are located on the front side of the sensor, which can block some of the incoming light. BSI technology flips this design by placing the photosensitive elements (pixels) on the backside of the sensor, allowing more light to reach the pixels. This significantly enhances light sensitivity and improves low-light performance. BSI-CMOS sensors are particularly effective in low-light conditions, as they can capture more light, resulting in brighter and less noisy images. This makes them well-suited for indoor and night photography. BSI-CMOS sensors deliver a higher SNR and reduced cross-talk.

Here is a sensor size comparison chart where you can see how different sensors compare with each other:

Sensor size chart

	Sensor	Dimensions	Area	Aspect Ratio	Crop Factor
	Medium Format	44 x 33 mm	1452 mm2	4:3	0.79x
	Full Frame	36 x 24 mm	864 mm2	3:2	1x
	APS-H	27 x 18 mm	486 mm2	3:2	1.3x
	APS-C	23.6 x 15.6 mm	368.2 mm2	3:2	1.5x
	APS-C (Canon)	22.3 x 14.9 mm	332.3 mm2	3:2	1.6x
	Micro Four Thirds	17.4 x 13 mm	226.2 mm2	4:3	2x
	1-inch	13.2 x 8.8 mm	116.2 mm2	3:2	2.7x
	1/1.7-inch	7.44 x 5.58 mm	41.5 mm2	4:3	4.7x
	1/2.3-inch	6.17 x 4.55 mm	28.1 mm2	4:3	5.6x

Canon EOS-1D X Mark III is equipped with DIGIC X processor and can take pictures up to 5472 x 3648 resolution. It can also take pictures with lower resolution like 4368 x 2912, 3648 x 2432, 2736 x 1824 with 3:2 aspect ratios. Fujifilm X-S20 is equipped with X-Processor 5 processor and can take pictures up to 6240 x 4160 resolution.

Lens Mount

Canon EOS-1D X Mark III has Canon EF lens mount and Fujifilm X-S20 has Fujifilm X lens mount. Due to Full Frame sensor in Canon EOS-1D X Mark III its crop factor is equal to 1x, this means that a 35mm equivalent focal length of the mounted lens will be equal to its actual focal length. Due to APS-C sensor in Fujifilm X-S20 its crop factor is equal to 1.5x, this means that a 35mm equivalent focal length of the mounted lens will be equal to its actual focal length times 1.5.

No Low-Pass Filter on Fujifilm X-S20

There is no optical low-pass filter (OLPF), also known as an anti-aliasing filter, in front of the sensor on Fujifilm X-S20. This results in a slightly sharper image but may also introduce moiré patterns and aliasing artifacts when photographing subjects with fine, repetitive patterns or details.

In-Body Image Stabilization on Fujifilm X-S20

Fujifilm X-S20 has a built-in 5-Axis Sensor Shift in-body image stabilization (IBIS) with 7 stops of compensation. This means that you are still getting vibration reduction when camera is paired with non-image stabilizied lenses. It also works with lenses with optical image stabilization and in combination can achieve even better compensation.

Built-in GPS on Canon EOS-1D X Mark III

Canon EOS-1D X Mark III has a built-in GPS (Global Positioning System) technology which allows you to automatically tag the location where you took your photos. You can later categorize, organize, and search for photos based on location. This is very useful for travel and outdoor photographers for documenting the locations where images were captured.
  Check out the cameras in our database that have built-in GPS.

Built-in Wi-Fi

Cameras have built-in Wi-Fi (Wi-Fi 5 802.11ac/b/g/n 2.4/5 GHz on Fujifilm X-S20) which allows to easily transfer photos and videos from the camera to other Wi-Fi-enabled devices, such as smartphones, tablets, printers, or computers. This eliminates the need for cables and allows for quick and convenient media sharing and social media integration. It gives you the ability to control your camera remotely using a smartphone or tablet. This is particularly useful for taking self-portraits, group shots, or capturing images in challenging conditions without having to touch the camera. Firmware updates can also be downloaded and installed wirelessly.
  Check out the cameras in our database that have built-in WiFi.

Bluetooth on Fujifilm X-S20

Fujifilm X-S20 has a built-in Bluetooth (version 4.2 LE) which lets you to connect the camera to a smartphone or a dedicated remote control device. This allows you to remotely trigger the camera, adjust settings and controls remotely through a paired mobile app. While Wi-Fi is generally faster for transferring larger files, Bluetooth can be used for small, selective transfers, it can provide real-time information about your camera's battery status, memory card capacity, and other key settings directly on your paired smartphone or smartwatch.
  Check out the cameras in our database that have built-in Bluetooth.

USB Inputs and HDMI Outputs

Both models have USB Type-C inputs for data transfer. Canon EOS-1D X Mark III has a Mini HDMI and Fujifilm X-S20 has a Micro HDMI connector for video signal output.

Battery

Canon EOS-1D X Mark III comes with NB-19 battery pack with battery life of 2850 shots and Fujifilm X-S20 comes with NP-W235 battery pack with battery life of 750 shots.

External Storage Slots

Canon EOS-1D X Mark III has Dual CFexpress Type B (CFexpress 1.0) card slots. Fujifilm X-S20 has a single SD/SDHC/SDXC (UHS-I) [2 TB Maximum] card slot.

Shutter

Canon EOS-1D X Mark III and Fujifilm X-S20 have Electronic shutter and Mechanical Focal Plane. shutter. Shutter speed can go up to 1/8000 sec on Canon EOS-1D X Mark III, and up to 1/32000 sec with electronic shutter and up to 1/4000 sec with mechanical shutter on Fujifilm X-S20. Canon EOS-1D X Mark III can shoot continuously up to 20.0 fps. Fujifilm X-S20 can shoot continuously up to 20.0 fps with electronic shutter and up to 8.0 fps with mechanical shutter.

Focusing

Canon EOS-1D X Mark III has Dual Pixel CMOS AF system with 191 (155 cross-type) focusing points and Fujifilm X-S20 has Intelligent Hybrid AF (TTL contrast AF / TTL phase detection AF) system with 425 focusing points. Canon EOS-1D X Mark III has detection range from -4 to +21 EV.

Exposure

Exposure meterings of Canon EOS-1D X Mark III ranges from 0 to +20 EV and you can set the exposure compensation within the ±5 EV range on Canon EOS-1D X Mark III and ±5 EV range on Fujifilm X-S20. You can also do exposure bracketing and manual exposure adjustment on Canon EOS-1D X Mark III and exposure bracketing and manual exposure adjustment on Fujifilm X-S20.

Flash

Fujifilm X-S20 has a built-in flash with maximum range of 7.00 m at ISO 200 and also accepts external flash which can be connected via Hot Shoe or Proprietary. Canon EOS-1D X Mark III has no built-in flash but an external flash may be connected via Hot Shoe or PC Terminal. The fastest flash synchronization speed is 1/250 sec on Canon EOS-1D X Mark III and 1/180 sec on Fujifilm X-S20.

Canon EOS-1D X Mark III body has dimensions of 158 x 168 x 83 mm (6.22 x 6.61 x 3.27") and Fujifilm X-S20 body has dimensions of 127 x 85 x 65 mm (5 x 3.35 x 2.56"). Canon EOS-1D X Mark III weighs 1440 g (3.17 lb / 50.79 oz) and Fujifilm X-S20 weighs 491 g (1.08 lb / 17.32 oz).

Canon EOS-1D X Mark III

Fujifilm X-S20

158 mm

168 mm

127 mm

85 mm

168 mm

85 mm

83 mm

65 mm