Sony Alpha 6400 vs Sigma fp

In this comparison, we will evaluate the Sony Alpha 6400 and the Sigma fp, 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 6400 was introduced in January 2019 and Sigma fp was introduced in July 2019. 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 6400 over Sigma fp.

This section shows those features and specifications which are the reason to choose Sigma fp over Sony Alpha 6400.

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 6400 has a 3.0" Tilting screen with 922k dot resolution and Sigma fp has a 3.15" Fixed screen with 2,100k dot resolution. Tilting screen makes Sony Alpha 6400 very useful for photography purposes but not so 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.

Electronic Viewfinder on Sony Alpha 6400

Sony Alpha 6400 has a built-in 0.39" Electronic viewfinder with 2,359k dot resolution. It has a 100% coverage and 1.07x (0.71x 35mm equivalent) magnification. There is no built-in or optional viewfinder available on Sigma fp.

Sony Alpha 6400 features a 24.2 megapixel APS-C CMOS sensor with dimensions of 23.5 x 15.6 mm and a total area of 366.6 mm². Its native ISO range is 100 - 32,000 and expands to 100 - 102,400 in boosted mode. Sigma fp features a 24.6 megapixel Full Frame BSI-CMOS sensor with dimensions of 35.9 x 23.9 mm and a total area of 571.2 mm². Its native ISO range is 100 - 25,600 and expands to 6 - 102,400 in boosted mode.

Sigma fp 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

Sony Alpha 6400 is equipped with BIONZ X processor and can take pictures up to 6000 x 4000 resolution. Sigma fp can take pictures up to 6000 x 4000 resolution.

Lens Mount

Sony Alpha 6400 has Sony E lens mount and Sigma fp has Leica L lens mount. Due to APS-C sensor in Sony Alpha 6400 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. Due to Full Frame sensor in Sigma fp 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.

No Image Stabilization

The cameras do not have image stabilization. On Sony Alpha 6400 it means that you need lenses with optical image stabilization for vibration reduction. As for Sigma fp nothing can be done. On Sigma fp it means that you need lenses with optical image stabilization for vibration reduction. As for Sony Alpha 6400 nothing can be done.

Built-in Wi-Fi on Sony Alpha 6400

Sony Alpha 6400 has a 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 Sony Alpha 6400

Sony Alpha 6400 has a built-in Bluetooth 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 6400

Sony Alpha 6400 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 and battery charging. Sony Alpha 6400 has a Micro HDMI and Sigma fp has a Micro HDMI connector for video signal output.

Battery

Sony Alpha 6400 comes with NP-FW50 battery pack with battery life of 410 shots and Sigma fp comes with BP-51 battery pack.

External Storage Slots

Sony Alpha 6400 has a single SD/SDHC/SDXC/Memory Stick Duo Hybrid (UHS-I) card slot. Sigma fp has a single SD/SDHC/SDXC (UHS-II) card slot.

Shutter

Sony Alpha 6400 and Sigma fp have Electronic. shutter. Shutter speed can go up to 1/4000 sec on Sony Alpha 6400, and up to 1/8000 sec on Sigma fp. Sony Alpha 6400 can shoot continuously up to 11.0 fps. Sigma fp can shoot continuously up to 18.0 fps.

Focusing

Sony Alpha 6400 has 425 focusing points and Sigma fp has 49 focusing points. Sony Alpha 6400 has detection range from -2 to +20 EV and Sigma fp has detection range from -5 to +18 EV.

Exposure

Exposure meterings of Sony Alpha 6400 and Sigma fp range from -2 to +20 EV and -5 to +18 EV respectively and you can set the exposure compensation within the ±5 EV range on Sony Alpha 6400 and ±5 EV range on Sigma fp. You can also do exposure bracketing and manual exposure adjustment on Sony Alpha 6400 and exposure bracketing and manual exposure adjustment on Sigma fp.

Flash

Sony Alpha 6400 has a built-in flash with maximum range of 6.00 m at ISO 100 and also accepts external flash which can be connected via Intelligent Hot Shoe or Wireless connection. Sigma fp has no built-in flash but an external flash may be connected via Hot Shoe. The fastest flash synchronization speed is 1/160 sec on Sony Alpha 6400 and 1/30 sec on Sigma fp.

Sony Alpha 6400 body has dimensions of 120 x 67 x 60 mm (4.72 x 2.64 x 2.36") and Sigma fp body has dimensions of 113 x 70 x 45 mm (4.45 x 2.76 x 1.77"). Sony Alpha 6400 weighs 403 g (0.89 lb / 14.22 oz) and Sigma fp weighs 422 g (0.93 lb / 14.89 oz).

Sony Alpha 6400

Sigma fp

120 mm

67 mm

113 mm

70 mm

67 mm

70 mm

60 mm

45 mm