Stable, fast, versatile, and compact, the Sony Alpha a6400 is an APS-C-format mirrorless camera that adopts many of the features normally reserved for their full-frame lineup. This includes an autofocus acquisition of 0.02 seconds, Real-time Eye AF and Real-time Tracking capabilities, high-speed shooting up to 11 fps and silent shooting up to 8 fps, both with AF/AE tracking, an upgraded BIONZ X image processing engine, an LCD touchscreen that tilts 180° up and 74° down, UHD 4K movie recording with full pixel readout and no pixel binning, internal recording for time-lapse videos, and more.
Complementing the imaging assets, the a6400 sports a robust magnesium-alloy body with sealed buttons and dials to help keep out dust and moisture, plus anti-dust functionality that protects the optical filter. The compact profile incorporates a high-resolution XGA Tru-Finder 2.36m-dot OLED electronic viewfinder for bright, clear, eye-level viewing, and this EVF features a 120 fps viewing mode for smooth tracking of fast-moving subjects. A rear 3.0" 921.6k-dot touchscreen TFT LCD monitor is also available and tilts 180° up and 74° down to benefit from shooting from high and low working angles. The touchscreen design also allows for intuitive touch-to-focus control. Additionally, for wireless remote control over the camera, or for just sharing imagery online, built-in Wi-Fi with NFC permits linking with a mobile device for intuitive wireless control.
The autofocus system on the a6400 inherits many technologies from Sony's lineup of full-frame cameras, including the a9, a7R III, and a7 III models. The a6400 features 425 phase-detection AF points and 425 contrast-detection AF points that are placed densely over the entire image area, covering approximately 84% of the image area. This high-speed, high-performance tracking AF system is paired with a BIONZ X image processing engine that together allows the camera to acquire focus in as little as 0.02 seconds and maintain subject lock effectively, ensuring even the fastest moving subjects can be tracked and captured with ease.
The a6400 introduces advanced "Real-time Eye AF," the latest version of Sony's Eye AF technology. This capability employs artificial intelligence-based object recognition to detect and process eye data in real-time, resulting in improved accuracy, speed, and tracking performance of Eye AF. In all autofocus modes, the camera now automatically detects the eyes of the subject and activates Eye AF with a half-press of the shutter button, and when in AF-C or AF-A mode, the preferred eye (left or right) of your subject can be selected as the focus point. Choices include Auto / Right Eye / Left Eye, and a Switch Right / Left Eye function is able to be assigned to a custom function as well. This technology frees the photographer to focus solely on composition with trust that focus will be tack sharp on the subject's eye. Eye AF support for animals will be added in summer 2019 via a system software update.
Also debuting on the a6400 is Sony's "Real-time Tracking." This mode utilizes Sony's algorithm that includes artificial intelligence (AI) based object recognition and processes colour, subject distance (depth), and pattern (brightness) as spatial information to ensure that all subjects can be captured with accuracy. Additionally, when photographing or videographing humans or animals, face and eye position information are recognized by AI and the subject's eye is monitored in real-time with high tracking precision. This can be activated by a simple half-press of the shutter button or can be assigned to a custom function
In terms of overall shooting speeds, the camera can shoot at up to 11 fps with full AF/AE tracking while utilizing the mechanical shutter, and up to 8 fps with full AF/AE tracking while silent shooting. It can shoot at each of these speeds for up to 116 frames JPEG Standard / 46 frames raw compressed, greatly increasing the chances of capturing the moment
Sony's a6400 is equipped with a 24.2MP APS-C image sensor that is paired with an upgraded BIONZ X processor to deliver improved image quality and colour reproduction in all types of shooting conditions. Standard ISO ranges up to ISO 32,000 for both stills and movies and is expandable up to ISO 102,400 for still images, with good noise reduction at medium and high sensitivities.
The camera also inherits many of the image processing algorithms from Sony's full-frame cameras, suppressing noise while preserving resolution and improving texture depiction.
The versatile a6400 is a solid video camera, offering internal 4K UHD (3840 x 2160) movie recording with full pixel readout and no pixel binning to collect about 2.4x the amount of data required for 4K movies, and then oversamples it to produce high quality 4K footage with detail and depth. Focusing during movie shooting is fast and stable thanks to upgraded Fast Hybrid AF technology, which keeps the subject in constant smooth focus, even if an object crosses in front of the camera. This advanced AF plus touch focus functionality makes it a suitable camera choice for many vloggers and video creators that are regularly creating and uploading content online.
For time-lapse movie creation, the camera features built-in interval recording that can be set anywhere between 1 and 60 seconds, with a total number of shots from 1 to 9999. AE tracking sensitivity can be adjusted to "High", "Mid," or "Low" during interval shooting, allowing for reduced changes in exposure over the shooting interval.
Additionally, for the first time in a Sony APS-C mirrorless camera, this model includes an HLG (Hybrid Log-Gamma) picture profile, which supports an Instant HDR workflow, allowing HDR (HLG) compatible TVs to playback beautiful, true-to-life 4K HDR imagery. Further, both S-Log2 and S-Log3 are available for increased colour grading flexibility, as well as Zebra functionality, Gamma Display Assist, and proxy recording. The camera can also record Full HD at 120 fps at up to 100 Mb/s, allowing footage to be reviewed and eventually edited into 4x or 5x slow-motion video files in Full HD resolution with AF tracking.
This camera is designed to offer a high level of functionality and customization to maximize shooting freedom. The a6400 features a fully tiltable 180° 3.0" LCD flip screen with 921,600 dots of resolution that allows for simple and effective framing of selfie-style shooting for both still and video capture. Utilizing this capability, vloggers will be able to check and monitor composition throughout their entire creative process. The LCD screen is also equipped with touch functionality, with options for TouchPad, Touch Focus, Touch Shutter, and Touch Tracking, which quickly activates "Real-time Tracking" through the touch screen.
The camera features a high-quality XGA OLED Tru-finder viewfinder, extensive customization with 89 functions that are assignable to 8 custom keys, My Dial and My Menu functionality, enhanced overall menu usability, a help screen for menus, star rating for images, and many other features that allow for a seamless shooting experience. It is also built with a tough magnesium-alloy design and has a durable shutter that is rated for approximately 200,000 cycles. It also is capable of seamlessly transferring files to a smartphone or tablet when connected to the new Imaging Edge Mobile application.
The included E PZ 16-50mm f/3.5-5.6 OSS lens provides a 24-75mm equivalent focal length range, covering wide-angle to portrait-length perspectives to suit working in a wide variety of situations. It features Optical SteadyShot image stabilization to help minimize the appearance of camera shake by up to four shutter speed steps to greatly benefit working in low-light conditions and with greater zoom magnifications. One extra-low dispersion element and four aspherical elements are integrated into the optical construction to help reduce chromatic aberrations as well as increase clarity, sharpness, and contrast and the Power Zoom electronically-driven zoom mechanism brings greater efficiency to controlling the zoom position of the lens.
|Lens Mount||Sony E|
|Camera Format||APS-C (1.5x Crop Factor)|
|Sensor Resolution||Actual: 25 Megapixel
Effective: 24.2 Megapixel (6000 x 4000)
|Maximum Resolution||6000 x 4000|
|Aspect Ratio||3:2, 16:9|
|Sensor Size||23.5 x 15.6 mm|
|Image File Format||JPEG, Raw|
|ISO Sensitivity||100 to 32000 (Extended: 100 to 102400)|
|Shutter Speed||Electronic Front Curtain Shutter
1/4000 to 30 Seconds
|Metering Method||Average, Center-Weighted Average, Highlight Weighted, Multi-Zone, Spot|
|Exposure Modes||Aperture Priority, Auto, Manual, Program, Shutter Priority|
|Exposure Compensation||-5 to +5 EV (1/3, 1/2 EV Steps)|
|Metering Range||-2 to 20 EV|
|White Balance||Auto, Cloudy, Color Temperature, Color Temperature Filter, Custom, Daylight, Flash, Fluorescent (Cool White), Fluorescent (Day White), Fluorescent (Daylight), Fluorescent (Warm White), Incandescent, Shade, Underwater|
|Continuous Shooting||Up to 11 fps at 24.2 MP for up to 46 Frames (Raw) / 116 Frames|
|Recording Modes||XAVC S
UHD 4K (3840 x 2160) at 24.00p/25p/29.97p [60 to 100 Mb/s]
Full HD (1920 x 1080) at 100p/119.88p [60 to 100 Mb/s]
Full HD (1920 x 1080) at 24.00p/25p/29.97p/50p/59.94p [50 Mb/s]
Full HD (1920 x 1080) at 50p/59.94p [25 Mb/s]
Full HD (1920 x 1080) at 25p/29.97p [16 Mb/s]
Full HD (1920 x 1080) at 50i/59.94i [17 to 24 Mb/s]
|External Recording Modes||4:2:2 8-Bit
UHD 4K (3840 x 2160) at 24.00p/25p/29.97p
Full HD (1920 x 1080) at 24.00p/50i/50p/59.94i/59.94p
|Audio Recording||Built-In Microphone (Stereo)
External Microphone Input
|Audio File Format||AC3, Dolby Digital 2ch, Linear PCM|
|Focus Type||Auto and Manual Focus|
|Focus Mode||Automatic (A), Continuous-Servo AF (C), Direct Manual Focus (DMF), Manual Focus (M), Single-Servo AF (S)|
|Autofocus Points||Phase Detection: 425
Contrast Detection: 425
|Autofocus Sensitivity||-2 to +20 EV|
|Viewfinder Resolution||2,359,296 Dot|
|Viewfinder Eye Point||23 mm|
|Viewfinder Magnification||Approx. 1.07x|
|Diopter Adjustment||-4 to +3|
|Display Type||180° Tilting Touchscreen LCD|
|Flash Modes||Auto, Fill Flash, Hi-Speed Sync, Off, Rear Sync, Red-Eye Reduction, Slow Sync, Wireless|
|Guide Number||19.69' / 6 m at ISO 100|
|Maximum Sync Speed||1/160 Second|
|Flash Compensation||-3 to +3 EV (1/3, 1/2 EV Steps)|
|Dedicated Flash System||TTL|
|External Flash Connection||Hot Shoe, Wireless|
|Media/Memory Card Slot||Single Slot: SD/SDHC/SDXC/Memory Stick Duo Hybrid (UHS-I)|
|Connectivity||3.5mm Microphone, HDMI D (Micro), Wired Remote Port, USB Micro-B (USB 2.0)|
|Operating Temperature||32 to 104°F / 0 to 40°C|
|Battery||NP-FW50 Rechargeable Lithium-Ion, 7.2 VDC, 1080 mAh|
|Dimensions (W x H x D)||4.7 x 2.6 x 2.4" / 120 x 66.9 x 59.7 mm|
|Weight||14.22 oz / 403 g (Body with Battery and Memory)|
|Focal Length||16 to 50mm (35mm Equivalent Focal Length: 24 to 75mm)|
|Maximum Aperture||f/3.5 to 5.6|
|Minimum Aperture||f/22 to 36|
|Angle of View||32° to 82°|
|Minimum Focus Distance||0.82' / 25 cm|
|Optical Design||9 Elements in 8 Groups|
|Filter Size||40.5 mm (Front)|
|Dimensions (ø x L)||2.63 x 1.19" / 66.8 x 30.23 mm|
|Weight||0.26 lb / 116 g|