Sony A7II vs A6400 – Check Which One Is Best & Why?

Sony A6400 & Sony A7 II share many similarities, but there are also important differences, such as quality, performance, features, design, and connectivity. If you want the best one between them, I Would recommend the Sony A6400 rather than the Sony A7 II.

Why Do I Recommend The Sony A6400?

  • The Sony A6400 has a 425-point phase-detect autofocus system for faster and more accurate subject acquisition across most of the frame, while the Sony A7 II uses a 117-point phase-detect autofocus system.
  • Sony A6400 supports real-time tracking autofocus for maintaining continuous focus on moving subjects during sports and wildlife shooting, whereas the Sony A7 II lacks real-time tracking autofocus.
  • It includes real-time Eye AF for humans and animals to keep eyes sharply focused in portraits and action scenes, while the Sony A7 II uses a basic Eye AF system limited to human subjects.
  • The Sony A6400 records oversampled 4K video from a 6K readout for sharper detail and reduced moiré in video footage, while the Sony A7 II records only Full HD video.
  • Sony A6400 shoots up to 11 frames per second for capturing fast-moving moments with more usable frames, while the Sony A7 II shoots up to 5 frames per second.
  • It features an electronic shutter for completely silent shooting in events, wildlife, or quiet environments, whereas the Sony A7 II relies on a mechanical shutter only.
  • The Sony A6400 comes with a 180-degree flip-up LCD screen for easy self-recording and vlogging, while the Sony A7 II uses a tilt-only LCD screen.
  • Sony A6400 has a significantly lighter and more compact body for improved portability and reduced fatigue during travel and long handheld sessions, compared to the Sony A7 II’s heavier body.

Maybe the Sony A7 II can make you comfortable because it’s a little bit cheaper than the Sony A6400. But you have to compromise all the above-mentioned features. Now the Decision is Yours. I hope it was helpful to choose the right one.

Side-by-Side Comparison

FeatureSony A6400Sony A7 II
Sensor FormatAPS-CFull Frame
Native ISO Range100–32,000100–25,600
Expanded ISO102,40051,200
Image Processor GenerationNewerOlder
Autofocus Points425 phase-detect117 phase-detect
AF Coverage~84%~65%
Eye AFHuman & AnimalHuman only
Real-Time TrackingYesNo
Continuous Shooting11 fps5 fps
Electronic ShutterYesNo
Video Resolution4K 30pFull HD 60p
Video Readout6K oversampledLine-skipped
Picture ProfilesS-Log2 / S-Log3 / HLGS-Log2
Microphone Input3.5 mmNone
LCD Articulation180° flip-upTilt only
TouchscreenYesNo
PriceCheck Sony A6400 PriceCheck Sony A7 II Price

What Common Both Can Do?

  • Lens Mount: Both cameras use Sony’s E-mount, allowing access to a wide ecosystem of native Sony lenses and third-party options. This compatibility makes it easier to share lenses across APS-C and full-frame Sony mirrorless systems.
  • Mirrorless Design: Each model is built around a mirrorless architecture, enabling shorter flange distance and more compact body construction. This design also supports advanced autofocus and real-time electronic viewfinder previews.
  • Interchangeable Lenses: Both cameras support interchangeable lenses, giving photographers flexibility to choose optics for portraits, landscapes, sports, or video work. This adaptability is essential for growing skill levels and varied shooting needs.
  • CMOS Sensor Type: Sony A6400 and Sony A7 II both use Exmor CMOS sensors, which are known for efficient light capture and low-noise performance. This sensor technology contributes to reliable image quality across different lighting conditions.
  • Image Processor Family: Both models rely on Sony’s BIONZ X image processor family for image handling. This ensures consistent color science, noise reduction behavior, and overall image rendering between the two cameras.
  • RAW Capture: Each camera supports RAW file capture, allowing photographers maximum flexibility in post-processing. RAW files preserve more detail and dynamic range than compressed formats.
  • Rear LCD Screen: Both cameras include a rear LCD for image playback, menu navigation, and live view shooting. The screen enables flexible composition when shooting at unusual angles.
  • Wi-Fi Connectivity: Wireless connectivity is built into both models, enabling image transfer to smartphones or tablets. This feature simplifies sharing photos without removing the memory card.
  • NFC Support: Each camera includes NFC for quick pairing with compatible devices. This allows faster setup when transferring images or controlling the camera remotely.
  • USB Connectivity: Sony A6400 and Sony A7 II both feature USB ports for data transfer and charging. USB support improves workflow efficiency when working with computers or power banks.
  • HDMI Output: Both cameras provide HDMI output for external displays or recorders. This is useful for studio work, monitoring, or video production setups.
  • Silent Shooting Option: Each model supports silent shooting via electronic shutter modes. This is beneficial for events, wildlife, or quiet environments where shutter noise is disruptive.
  • Dust & Moisture Resistance: Both bodies include basic sealing against dust and moisture. This adds durability for outdoor shooting in less-than-ideal weather conditions.
  • Hot Shoe: Each camera features Sony’s Multi Interface Shoe for flashes and accessories. This ensures compatibility with a wide range of lighting and audio equipment.
  • Battery Type: Both cameras use the NP-FW50 battery, allowing shared batteries and chargers. This is convenient for users who own multiple Sony mirrorless bodies.

Common Features

FeatureSony A6400Sony A7 II
Lens MountSony E-mountSony E-mount
Mirrorless DesignYesYes
Interchangeable LensesYesYes
CMOS Sensor TypeExmor CMOSExmor CMOS
Image Processor FamilyBIONZ XBIONZ X
RAW CaptureYesYes
JPEG CaptureYesYes
Manual Exposure ModesYesYes
Electronic ViewfinderOLED EVFOLED EVF
Viewfinder Resolution2.36M-dot2.36M-dot
Rear LCD ScreenYesYes
Wi-Fi ConnectivityYesYes
NFC SupportYesYes
USB ConnectivityYesYes
HDMI OutputYesYes
Silent Shooting OptionYesYes
Dust & Moisture ResistanceYesYes
Hot ShoeMulti Interface ShoeMulti Interface Shoe
Battery TypeNP-FW50NP-FW50
Price Check Sony A6400 Price
Check Sony A7 II Price

FAQ

Which camera has better image quality overall?
Sony A7 II generally delivers better image quality in terms of depth, dynamic range, and low-light rendering because of its full-frame sensor, while Sony A6400 produces very sharp images with excellent detail thanks to its newer sensor design and processing.

Which camera performs better in low light?
Sony A7 II has an advantage in low-light photography due to its larger full-frame sensor and in-body image stabilization, whereas Sony A6400 compensates with higher usable ISO performance from its newer sensor generation.

Is Sony A6400 or Sony A7 II better for video recording?
Sony A6400 is clearly better for video because it supports oversampled 4K recording, modern picture profiles, and reliable continuous autofocus, while Sony A7 II is limited to Full HD video.

Which camera has better autofocus performance?
Sony A6400 has significantly faster and more accurate autofocus with dense phase-detect points, real-time tracking, and Eye AF, whereas Sony A7 II uses an older autofocus system with fewer focus points.

Is in-body image stabilization important between these two cameras?
Sony A7 II includes 5-axis in-body image stabilization, which helps reduce blur with unstabilized lenses, while Sony A6400 relies on lens-based stabilization only.

Which camera is better for sports and wildlife photography?
Sony A6400 is better suited for sports and wildlife due to its 11 fps continuous shooting, advanced subject tracking, and wider autofocus coverage compared to the slower burst rate of Sony A7 II.

Which camera is more portable for travel?
Sony A6400 is more portable because it is smaller, lighter, and pairs well with compact APS-C lenses, while Sony A7 II is heavier and typically requires larger full-frame lenses.

Do both cameras use the same lenses?
Both cameras use the Sony E-mount, but Sony A6400 is optimized for APS-C lenses while Sony A7 II is designed for full-frame lenses, though full-frame lenses can be shared between them.

Which camera is better for beginners?
Sony A6400 is generally easier for beginners due to its newer interface, touchscreen support, and reliable autofocus, while Sony A7 II may require more experience to fully utilize its full-frame advantages.

How do the batteries compare between the two models?
Both cameras use the same NP-FW50 battery, but Sony A6400 tends to achieve slightly better battery efficiency due to newer power management despite similar rated capacities.

Is Sony A7 II still relevant today?
Sony A7 II remains relevant for photographers who prioritize full-frame still photography and stabilization, but it lacks many modern features found in newer mirrorless cameras like Sony A6400.

Which camera is better for portraits?
Sony A7 II is often preferred for portraits because the full-frame sensor produces smoother background blur and better subject separation, while Sony A6400 can still deliver excellent portraits with the right lens.

Are both cameras weather-sealed?
Both Sony A6400 and Sony A7 II include basic dust and moisture resistance, making them suitable for light outdoor use but not for extreme weather conditions.

Which camera has better long-term system value?
Sony A6400 offers better long-term value for users focused on autofocus performance, video, and compact systems, while Sony A7 II appeals to those investing in full-frame lenses for still photography.

Which one should I choose between Sony A6400 and Sony A7 II?
Sony A6400 is the better choice for speed, video, autofocus, and portability, whereas Sony A7 II is better suited for photographers who prioritize full-frame image characteristics and in-body stabilization.