Released February 2019

Real-time Eye AF for Stable Eye Tracking
Pursuing stunning image quality with an APS-C Exmor CMOS sensor and the next-generation BIONZ X image processing engine
High-resolution 4K video recording and video functions for professional photography / [ILCE6400S] ILCE6400S Released February 2019
High-speed, high-precision, high-tracking AF that instantly captures and holds the subject. The high-density 425-point phase-detection AF sensor inherits the motion prediction algorithm of full-frame cameras, and the world's fastest response time of 0.02 seconds*. Equipped with "High-density AF Tracking Technology," it delivers high AF accuracy and moving subject tracking performance. Even moving subjects with complex movements that are difficult to capture can be tracked more quickly and accurately. *: Based on Sony research as of the press release in January 2019. For an APS-C sensor digital SLR camera. CIPA guidelines compliant, internal measurement method. Pre-AF off, viewfinder in use. E 18-135mm F3.5-5.6 OSS lens attached. Real-time Eye AF with improved detection accuracy and speed. Thanks to the advanced image processing capabilities of BIONZ X and technology cultivated in full-frame cameras, eye detection accuracy, speed, and tracking have been significantly improved over the α6300's Eye AF. Maintaining focus on the eye is now easy and reliable, even in portraits of moving subjects. Stable eye tracking ensures smooth shooting. [Fast] Fast Hybrid AF: World's fastest* AF speed of 0.02 seconds. The Fast Hybrid AF system combines phase-detection AF, which boasts excellent speed and tracking, with high-precision contrast-detection AF. Furthermore, the high-speed processing of the new-generation BIONZ X, optimized for the α6400, achieves the world's fastest AF speed of 0.02 seconds*, instantly capturing even fast-moving subjects. *: As of the press release in January 2019, according to Sony research. For digital SLR cameras with an APS-C sensor. Compliant with CIPA guidelines, internal measurement method. With pre-AF off and viewfinder in use. With E 18-135mm F3.5-5.6 OSS attached.
Touchpad function that allows you to adjust the focus while looking through the viewfinder. The touchpad function allows you to move the focus frame by tracing the monitor with your finger like a touchpad. The focus position moves according to the amount of finger movement on the monitor, allowing you to smoothly adjust the focus while looking through the viewfinder.
APS-C Exmor CMOS sensor with approximately 24.2 effective megapixels and an advanced image processing system. The camera is equipped with an APS-C size CMOS sensor with approximately 24.2 effective megapixels. The use of copper wiring and a highly efficient circuit process provide high light-gathering efficiency, achieving a wide sensitivity range and excellent low-noise performance even when shooting at high sensitivity. The increased readout speed enables features such as 4K video recording with full pixel readout without pixel binning and Full HD 120fps shooting. Furthermore, the new-generation image processing engine, BIONZ X, is equipped with a front-end LSI that supports BIONZ X's image processing. Optimized image processing algorithms further improve resolution and texture depiction. Dramatically improved light collection efficiency, achieving even higher sensitivity and lower noise. The adoption of copper wiring and finer circuit processes has resulted in "high light collection process technology" that minimizes the pixel wiring layer, and an improved "wide photodiode design" that expands the light-receiving area of ​​the photodiode that captures light. This dramatically increases light collection efficiency and significantly improves the signal-to-noise ratio per pixel, achieving higher sensitivity and lower noise for higher image quality. High-sensitivity shooting performance with a maximum ISO of 102400. Taking full advantage of the APS-C image sensor's performance, the camera achieves a standard ISO range of 100-32000, with an extended ISO range of up to 102400*. It combines high resolution and low noise across a wide sensitivity range. A high-speed shutter allows for blur-free photos even in low-light conditions, preserving the atmosphere without the need for a flash. *High-sensitivity shooting performance with a maximum ISO of 102400. This is the maximum extended ISO limit for still photography. For video, the maximum ISO is 32000. Silent shooting with AF/AE tracking. Silent continuous shooting at up to approximately 8 frames per second is now possible, even during high-speed continuous shooting. Capture silent shots without worrying about the shutter sound, ensuring you never miss a decisive moment. It can also be used in conjunction with AF-C, Real-time Eye AF, and Real-time Tracking. Supports 1:1 aspect ratio for easy social media posting. In addition to 3:2 and 16:9 aspect ratios, you can now also select the 1:1 aspect ratio commonly used on social media. This eliminates the need for post-capture cropping. A 180-degree tilting LCD monitor makes selfies easy. The camera's tilting LCD monitor can be adjusted up to approximately 90 degrees upward and down to approximately 74 degrees downward. Easily capture selfies from a variety of positions and angles, whether you're shooting high or lowering it to match the eye level of a child or animal. It can also be flipped 180 degrees, making it easy to check the composition while taking selfies. Furthermore, focusing, shutter release, and automatic subject tracking can be controlled simply by touching the LCD monitor, further enhancing the flexibility of position and angle. [Accessories] Rechargeable battery pack "NP-FW50", AC adapter "AC-UUD12", shoulder strap, body cap, accessory shoe cap, eyepiece cup, micro USB cable ■ Specifications ■ Lens mount: E-mount Image sensor: APS-C size (23.5 x 15.6 mm), Exmor CMOS sensor Effective pixels: Approximately 24.2 million pixels Recording media: Memory Stick PRO Duo, Memory Stick PRO-HG Duo, Memory Stick Micro (M2) SD memory card, SDHC memory card (UHS-I compatible), SDXC memory card (UHS-I compatible), microSD memory card, microSDHC memory card, microSDXC memory card Shutter: Electronically controlled vertical-travel focal-plane shutter Shutter speed range: Still photography: 1/4000 to 30 seconds, Bulb video photography: 1/4000 to 1/4 second (in 1/3 increments), up to 1/60 second in AUTO mode, up to 1/30 second in Auto slow shutter mode Image stabilization: Compatible with interchangeable lenses (depending on lens specifications) LCD monitor: 3.0-inch wide TFT, 921600 dots Angle adjustment: Approximately 180 degrees up and 74 degrees down from the back of the camera, touch panel compatible NFC: One-touch remote, One-touch sharing Wi-Fi: Smartphone transfer, remote control from smartphone, PC transfer, TV viewing Interface: Compatible accessories: Multi-interface shoe Wireless LAN (built-in): Wi-Fi compliant, IEEE 802.11b/g 802.11b/g/n (2.4GHz band) Bluetooth: Standard version 4.1 (2.4GHz band) HDMI micro connector (Type D), microphone connector (3.5mm stereo mini connector), multi/micro USB connector Audio: Built-in microphone (stereo), speaker (monaural) Power source: Rechargeable battery pack NP-FW50 External power source: AC adapter AC-PW20 (sold separately) Weight: Approx. 359g Size: Approx. 120.0 (W) x 66.9 (H) x 59.7 (D) mm (projections not included) Operating temperature range: Approx. 0 to 40°C □ [α Autumn Cash Back Campaign 2025] Customers who purchase eligible products during the campaign period and submit their application within the application period in accordance with the manufacturer's procedures will receive a cash back of the specified amount for each eligible product! [Purchase period] Friday, August 29, 2025 to Tuesday, October 14, 2025 *The same product cannot be applied for multiple campaigns. Applications for products that have already been applied for in the past (products with the same serial number) will also be invalid. Manufacturer's warranty period: 1 year