Sony Alpha SLT-A99 II vs Fujifilm X-S10

In this comparison, we will evaluate the Sony Alpha SLT-A99 II and the Fujifilm X-S10, 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.

Sony Alpha SLT-A99 II was introduced in September 2016 and Fujifilm X-S10 was introduced in October 2020. 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 Sony Alpha SLT-A99 II over Fujifilm X-S10.

This section shows those features and specifications which are the reason to choose Fujifilm X-S10 over Sony Alpha SLT-A99 II.

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

Sony Alpha SLT-A99 II and Fujifilm X-S10 have 3.0" Fully Articulated screens with 1,229k dot and 1,040k 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 (available only on Fujifilm X-S10) 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

Sony Alpha SLT-A99 II has a built-in 0.51" Electronic viewfinder with 2,359k dot resolution and Fujifilm X-S10 has a built-in 0.5" Electronic (OLED) viewfinder with 2,360k dot resolution. They both have 100% coverage.

BSI-CMOS Sensor

Sony Alpha SLT-A99 II features a 42.4 megapixel Full Frame BSI-CMOS sensor with dimensions of 35.9 x 24 mm and a total area of 861.6 mm². Its native ISO range is 100 - 25,600 and expands to 50 - 102,400 in boosted mode. 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 243.4 mm². Its native ISO range is 160 - 12,800 and expands to 80 - 51,200 in boosted mode.

The cameras have 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

Sony Alpha SLT-A99 II is equipped with BIONZ X processor and can take pictures up to 7952 x 5304 resolution. Fujifilm X-S10 is equipped with X-Processor 4 processor and can take pictures up to 6240 x 4160 resolution.

Lens Mount

Sony Alpha SLT-A99 II has Sony A lens mount and Fujifilm X-S10 has Fujifilm X lens mount. Due to Full Frame sensor in Sony Alpha SLT-A99 II 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-S10 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

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 5-Axis Sensor Shift in-body image stabilization (IBIS) (6 stops of compensation in Fujifilm X-S10). 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

Sony Alpha SLT-A99 II and Fujifilm X-S10 have built-in Bluetooth (version 4.1 on Sony Alpha SLT-A99 II, version 4.2 LE on Fujifilm X-S10) 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.

NFC on Sony Alpha SLT-A99 II

Sony Alpha SLT-A99 II has Near Field Communication (NFC) technology which simplifies the process of pairing it with other NFC-enabled devices like smartphones or tablets. It allows to quickly transfer photos and videos or remotely control the camera from compatible device. NFC can also be used for authentication and security purposes. It can verify your identity before accessing certain features or transferring sensitive data. It can be used with NFC-enabled accessories as well, such as lenses, flashes and GPS devices.

USB Inputs and HDMI Outputs

Both models have USB inputs for data transfer. Sony Alpha SLT-A99 II has a Micro HDMI and Fujifilm X-S10 has a Micro HDMI connector for video signal output.

Battery

Sony Alpha SLT-A99 II comes with NP-FM500H battery pack with battery life of 490 shots and Fujifilm X-S10 comes with NP-W126 battery pack with battery life of 325 shots.

External Storage Slots

Sony Alpha SLT-A99 II has two card slots - one for SD/SDHC/SDXC (UHS-II) and one for SD/SDHC/SDXC/Memory Stick Duo Hybrid (UHS-I). Fujifilm X-S10 has a single SD/SDHC/SDXC (UHS-I) card slot.

Shutter

Fujifilm X-S10 has Electronic shutter and Mechanical Focal Plane shutter. Shutter speed can go up to 1/8000 sec on Sony Alpha SLT-A99 II, and up to 1/32000 sec with electronic shutter and up to 1/4000 sec with mechanical shutter on Fujifilm X-S10. Sony Alpha SLT-A99 II can shoot continuously up to 12.0 fps. Fujifilm X-S10 can shoot continuously up to 20.0 fps with electronic shutter and up to 8.0 fps with mechanical shutter.

Focusing

Sony Alpha SLT-A99 II has TTL Phase-detection AF system with 399 (15 cross-type) focusing points and Fujifilm X-S10 has Intelligent Hybrid AF (TTL contrast AF / TTL phase detection AF) system with 425 focusing points. Sony Alpha SLT-A99 II has detection range from -4 to +18 EV.

Exposure

Exposure meterings of Sony Alpha SLT-A99 II ranges from -2 to +17 EV and you can set the exposure compensation within the ±5 EV range on Sony Alpha SLT-A99 II and ±5 EV range on Fujifilm X-S10. You can also do exposure lock, exposure bracketing and manual exposure adjustment on Sony Alpha SLT-A99 II and exposure bracketing and manual exposure adjustment on Fujifilm X-S10.

Flash

Fujifilm X-S10 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. Sony Alpha SLT-A99 II has no built-in flash but an external flash may be connected via Hot Shoe or Proprietary. The fastest flash synchronization speed is 1/250 sec on Sony Alpha SLT-A99 II and 1/180 sec on Fujifilm X-S10.

Sony Alpha SLT-A99 II body has dimensions of 143 x 104 x 76 mm (5.63 x 4.09 x 2.99") and Fujifilm X-S10 body has dimensions of 126 x 85 x 65 mm (4.96 x 3.35 x 2.56"). Sony Alpha SLT-A99 II weighs 849 g (1.87 lb / 29.95 oz) and Fujifilm X-S10 weighs 465 g (1.03 lb / 16.40 oz).

Sony Alpha SLT-A99 II

Fujifilm X-S10

143 mm

104 mm

126 mm

85 mm

104 mm

85 mm

76 mm

65 mm