Fujifilm X-S10 vs Pentax KF

In this comparison, we will evaluate the Fujifilm X-S10 and the Pentax KF, 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.

Fujifilm X-S10 was introduced in October 2020 and Pentax KF was introduced in November 2022. 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 Fujifilm X-S10 over Pentax KF.

This section shows those features and specifications which are the reason to choose Pentax KF over Fujifilm X-S10.

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

Fujifilm X-S10 and Pentax KF have 3.0" Fully Articulated screens with 1,040k dot and 1,037k dot resolutions respectively. Fully articulated screen makes cameras selfie and vlogger friendly and generally very useful for video shooting. Fujifilm X-S10 also features 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

Fujifilm X-S10 has a built-in 0.5" Electronic (OLED) viewfinder with 2,360k dot resolution and Pentax KF has a built-in Optical (pentaprism) viewfinder. They both have 100% coverage.

Fujifilm X-S10 features a 26.1 megapixel APS-C BSI-CMOS sensor with dimensions of 23.5 x 15.6 mm and a total area of 366.6 mm². Its native ISO range is 160 - 12,800 and expands to 80 - 51,200 in boosted mode. Pentax KF features a 24.24 megapixel APS-C CMOS sensor with dimensions of 23.5 x 15.6 mm and a total area of 243.4 mm². Its native ISO range is 100 - 102,400.

Fujifilm X-S10 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

Fujifilm X-S10 is equipped with X-Processor 4 processor and can take pictures up to 6240 x 4160 resolution. Pentax KF is equipped with PRIME MII processor and can take pictures up to 6000 x 4000 resolution. It can also take pictures with lower resolution like 4608 x 3072, 3072 x 2048, 1920 x 1280 with 3:2 aspect ratios.

Lens Mount

Fujifilm X-S10 has Fujifilm X lens mount and Pentax KF has Pentax K_AF2 lens mount. Due to their APS-C sensor their crop factor (also called lens multiplier) 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

There is no optical low-pass filter (OLPF), also known as an anti-aliasing filter, in front of the sensor on either of the cameras. 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

The cameras have a built-in in-body image stabilization (IBIS) (6 stops of compensation in Fujifilm X-S10 and 4.5 stops of compensation in Pentax KF). This means that you are still getting vibration reduction when cameras are 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 Wi-Fi

Cameras have built-in Wi-Fi (802.11b/g/n, 2.4 GHz) 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-S10

Fujifilm X-S10 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 inputs for data transfer. Fujifilm X-S10 has a Micro HDMI and Pentax KF has a Mini HDMI connector for video signal output.

Battery

Fujifilm X-S10 comes with NP-W126 battery pack with battery life of 325 shots and Pentax KF comes with D-LI109 battery pack with battery life of 410 shots.

External Storage Slots

Cameras have a single SD/SDHC/SDXC (UHS-I) card slot.

Shutter

Fujifilm X-S10 has Electronic shutter and Mechanical Focal Plane shutter. Pentax KF has Electronic shutter. Shutter speed can go up to 1/32000 sec with electronic shutter and up to 1/4000 sec with mechanical shutter on Fujifilm X-S10, and up to 1/6000 sec on Pentax KF. Fujifilm X-S10 can shoot continuously up to 20.0 fps with electronic shutter and up to 8.0 fps with mechanical shutter. Pentax KF can shoot continuously up to 6.0 fps.

Focusing

Fujifilm X-S10 has Intelligent Hybrid AF (TTL contrast AF / TTL phase detection AF) system with 425 focusing points and Pentax KF has 11 (9 cross-type) focusing points. Pentax KF has detection range from -3 to +18 EV.

Exposure

Exposure meterings of Pentax KF ranges from 0 to +22 EV and you can set the exposure compensation within the ±5 EV range on Fujifilm X-S10 and ±5 EV range on Pentax KF. You can also do exposure bracketing and manual exposure adjustment on Fujifilm X-S10 and exposure lock, exposure bracketing and manual exposure adjustment on Pentax KF.

Flash

Cameras have built-in flash with maximum range of 7.00 m at ISO 200 on Fujifilm X-S10 and 12.00 m at ISO 100 on Pentax KF. They also accept external flash which can be connected via Hot Shoe to Fujifilm X-S10 and via Hot Shoe or Wireless connection to Pentax KF. The fastest flash synchronization speed is 1/180 sec on both cameras.

Fujifilm X-S10 body has dimensions of 126 x 85 x 65 mm (4.96 x 3.35 x 2.56") and Pentax KF body has dimensions of 126 x 93 x 74 mm (4.94 x 3.66 x 2.91"). Fujifilm X-S10 weighs 465 g (1.03 lb / 16.40 oz) and Pentax KF weighs 688 g (1.52 lb / 24.27 oz).

Fujifilm X-S10

Pentax KF

126 mm

85 mm

126 mm

93 mm

85 mm

93 mm

65 mm

74 mm