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Sony a6400 vs a7 III Comparison

Storage & Battery

Sony a6400

Sony A6400 mirrorless camera image

Sony a7 III

Sony A7 III camera
Sony a6400
Sony a7 III
a7 III
Refers to the year this camera was officially made available for sale.
Announcement Date
Refers to the date the manufacturer publicly announced the upcoming release and general specs of this camera.
January 15, 2019
February 27, 2018
Camera Type
Camera Size
Camera Weight

The Sony a7 III outperforms the Sony a6400 with a score of 81 versus 70. Both cameras share similarities as mirrorless cameras, announced in 2018 and 2019 respectively. The a7 III excels with its larger size of 127 x 96 x 74mm and heavier weight of 650g, providing more stability and a more robust build. It also justifies its higher launch price of $2000 compared to the a6400’s $900.

On the other hand, the Sony a6400 has its advantages, such as its compact size (120 x 67 x 60mm) and lighter weight (403g), making it more portable and travel-friendly. While the a7 III takes the lead in overall performance, the a6400 offers a more budget-friendly and compact option for photographers who prioritize portability.

Sony a6400 vs a7 III Overview and Optics

The Sony a7 III outperforms the Sony a6400 in optics with a score of 81/100, a 13-point difference from the a6400’s score of 68/100. Both cameras have 24.2 megapixels, a CMOS sensor, Bionz X processor, and the same shooting speed of 11 and 10 fps, respectively.

The Sony a7 III’s superiority lies in its full-frame sensor size, compared to the a6400’s APS-C sensor. This larger sensor contributes to the a7 III’s higher DXOMARK score of 96, compared to the a6400’s 83. Additionally, the a7 III features image stabilization, an essential factor for capturing sharp, blur-free images, while the a6400 lacks this feature.

The a6400’s main advantage is its Sony E lens mount, which is compatible with a wider range of lenses than the a7 III’s Sony FE mount. This flexibility allows users to expand their lens collection more easily and at a lower cost. Furthermore, the a6400 has a slightly faster shooting speed than the a7 III, which may be beneficial for capturing fast-moving subjects.

The Sony a7 III’s full-frame sensor and image stabilization make it the better camera in terms of optics, providing higher image quality and performance. However, the a6400’s lens compatibility and faster shooting speed may appeal to those who prioritize flexibility and speed in their photography. Ultimately, both cameras have their strengths, and the choice depends on the individual photographer’s needs and preferences.

The higher the number of megapixels, the more detail the cameras sensor can capture.
24.2 MP
24.2 MP
Image Resolution
Image resolution is measured in pixels and megapixels, width by height. The higher the number, the higher its resolution.
6000 x 4000 px
6000 x 4000 px
Sensor Type
The camera sensor captures light and records the image. Sensors vary in physical size, the number of pixels, and quality.
Sensor Size
The sensor size contributes to the overall quality as well as the dynamic and tonal range a camera can capture. As a rule of thumb, the more surface there is to read the light, the more information it will capture.
15.6 x 23.5 mm
23.8 x 35.6 mm
Sensor Format
Refers to the most commonly used sensor sizes.
Full Frame
Frame Rate
The number of sequential frames per second the camera can write to the memory card when shooting in burst or continuous mode.
11 fps
10 fps
Lens Mount
The lens mount will tell you what type of lens range you can fit onto the camera body. Often the same camera company will have different lens ranges for different cameras.
Sony E
Sony FE
Image Processor
The image processor in the camera converts the information collected on the sensor for digital storage on the memory card.
Bionz X
Bionz X
Aspect Ratio
The aspect ratio refers to the proportional difference between width and height. The most popular aspect ratios are 3:2 and 4:3.
Minimum ISO (Native)
Refers to the lowest native (or 'base') ISO setting. Lower ISO are less sensitive to light but make a cleaner image.
Maximum ISO (Native)
Refers to the highest native (or 'base') ISO setting. Higher ISO is necessary for low-light situations or night photography, but higher ISOs often introduce grain or noise.
Minimum ISO (Expanded)
Expanded (or extended) ISO is a digitally enhanced feature available on some cameras. It allows you to push beyond the native ISO range if necessary.
Maximum ISO (Expanded)
Expanded (or extended) ISO is a digitally enhanced feature available on some cameras. It allows you to push beyond the native ISO range if necessary.
Minimum Shutter Speed
The minimum shutter speed will tell you the longest exposure your camera can take without using an external accessory.
30 s
30 s
Maximum Shutter Speed
The maximum shutter speed tells you the length inside 1 second the camera will capture. These can sometimes be extended with accessories such as extra external batteries.
1/ 4000 s
1/ 8000 s
Autofocus Points
Autofocus points show where the camera is focusing graphically as squares or brackets in Live View or on an electronic viewfinder. These points are also used for light meter readings.
In-body Stabilization
In-body Stabilization means the camera has a certain technology embedded that counteracts camera shake.
Viewfinder Type
The viewfinder type is either electronic or optical. Electronic viewfinders will have a small screen in the viewfinder. Optical viewfinders will use prisms and mirrors to look through the lens.
Viewfinder Resolution
2,359,296 dots
2,359,296 dots

Sony a6400 vs a7 III Video Performance

When comparing the video capabilities of the Sony a6400 and the Sony a7 III, the Sony a6400 emerges as the clear winner, with a video score of 91/100, while the Sony a7 III has a score of 70. This difference of 35 points highlights the superiority of the Sony a6400 in terms of video performance.

Both cameras share some common specifications, such as a maximum video resolution of 4K and maximum video dimensions of 3840 x 2160. However, the Sony a6400 outshines the Sony a7 III in other aspects. The a6400 has a maximum video frame rate of 120fps, which is significantly higher than the 30fps offered by the a7 III. This higher frame rate allows for smoother slow-motion videos and better overall video quality.

While the Sony a7 III may not surpass the a6400 in terms of video capabilities, it still offers a respectable video performance with its 4K resolution and 30fps frame rate. This makes it suitable for casual videographers or photographers who occasionally need to record video.

Indicates if this camera is capable of recording video.
Max Video Resolution
The best resolution this camera can capture video in. Modern cameras can capture up to 8K video.
Max Video Dimensions
Video resolution measured by the greatest number of pixels possible in each frame, width by height. A higher resolution means more detail or clarity in your video.
3840 x 2160 px
3840 x 2160 px
Max Video Frame Rate
How many frames per second your video will capture. Most cameras have options for multiple frame rates, depending on the resolution you shoot in. For a general video, 24p or 30p is the standard, but more serious filmmakers may need a higher frame rate for creative effect.
120 p
30 p
Time-Lapse Built In
A built in time-lapse mode will allow continuous shooting throughout a prolonged period of time to be compressed into a sped up video.
Video File Format
Different cameras can record in various video file formats. The File format you record in can impact how you edit and use the files.
MPEG-4, AVCHD Ver. 2.0, XAVC S

Sony a6400 vs a7 III Features and Benefits

The Sony a6400 and Sony a7 III both have a feature score of 81 out of 100, making it a tie in this comparison. These cameras share many specifications, including a 3-inch screen size, 921600-dot screen resolution, touchscreen capabilities, flip screens, and the absence of GPS. Additionally, both cameras offer WiFi and Bluetooth connectivity.

The Sony a6400 excels in certain aspects, such as its lightweight and compact design, making it a more portable option for photographers who need to carry their gear around for extended periods. The a6400 is also known for its fast autofocus system, which allows for quick and accurate focus on subjects. This camera is a suitable choice for those who prioritize portability and quick autofocus capabilities.

On the other hand, the Sony a7 III outperforms the a6400 in areas like image quality and low-light performance, thanks to its full-frame sensor. This camera also features a higher dynamic range, providing more details in both highlights and shadows. The a7 III is an excellent choice for photographers who require superior image quality and better performance in challenging lighting conditions.

In this comparison, both cameras have their advantages. The Sony a6400 is the winner for those who value a lightweight and compact design, along with fast autofocus. The Sony a7 III is the better choice for photographers who prioritize image quality and low-light performance. Ultimately, the decision between these two cameras depends on the individual’s specific needs and preferences.

Built-in Flash
A built-in flash will often be positioned right above the lens. This will automatically pop up when you activate it.
External Flash
External flashes are often connected through a hot shoe at the top of a camera, or a cable at the side of the camera.
GPS features in a camera will include location metadata to each of your photographs.
Weather Sealing
Weather sealing capabilities will give you more confidence when shooting in unfavourable conditions.
Screen Type
Touch Screen
Touchscreen allows you to change camera settings and access menus with a swipe of your finger, instead of using buttons.
Screen Size
Screen Resolution
Screen dots indicate the resolution of the LCD screen by including each sub pixel.
921,600 dots
921,600 dots
Flip Screen
A flip screen (or articulating screen) is a second screen which can flip out from the side or top of the camera. This rotating screen allows you more freedom to take photos at different angles.
Live View
Live View feature allows you to see a continuous live video of what is being seen through your lens.
Bluetooth capabilities allow you wireless control of your camera with other external devices.

Sony a6400 vs a7 III Storage and Battery

The Sony a7 III outperforms the Sony a6400 in storage and battery with a score of 81, compared to the a6400’s 37/100. Both cameras accept SD, SDHC, and SDXC memory cards, as well as Memory Stick Duo. However, the a7 III offers two memory card slots, while the a6400 has only one. This provides more storage flexibility for the a7 III.

In terms of battery life, the a7 III lasts for 750 shots, significantly longer than the a6400’s 410 shots. The a7 III uses the NP-FZ100 battery, whereas the a6400 uses the NP-FW50. The Sony a7 III generally provides better storage options and longer battery life than the Sony a6400.

Storage and Battery
Storage and Battery
Memory Card
SD / SDHC / SDXC, Memory Stick Duo (UHS-I compatible)
SD / SDHC / SDXC, Memory Stick Duo / Pro Duo / Pro-HG Duo
Dual Memory Card Slots
Battery Type
Battery Life
Approximately how long this cameras battery will last measured by how many photographs you will be able to take.
410 shots
750 shots
USB Charging
Sensor scores tested by DXOMARK
Overall Score
DXOMARK overall sensor score.
Portrait (Color Depth)
As described by DXOMARK 'The Portrait score in our camera sensor reviews defines color depth performance and its unit is a number of bits. A color depth of 22 bits is excellent; differences below 1 bit are barely noticeable.'
24 bits
25.1 bits
Landscape (Dynamic Range)
As described by DXOMARK 'The Landscape score in our camera sensor tests defines the maximum dynamic range of the camera sensor and its unit is an exposure value (EV). A value of 12 EV is excellent with differences below 0.5 EV usually not noticeable.'
13.6 EVs
14.7 EVs
Sports (Low-Light ISO)
Described by DXOMARK as 'The maximal value of ISO sensitivity needed to reach a given value of Signal-to-Noise Ratio (SNR). The greater the value, the better'
Main Features
Extra Features
Construction and Durability
Handling and Ergonomics
Value for Money
Total Score

Sony a6400 vs a7 III – Our Verdict

Sony a6400 vs a7 III Comparison image.

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