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Sony a6400 vs a7R II Comparison

Storage & Battery

Sony a6400

Sony A6400 mirrorless camera image

Sony a7R II

Sony A7R II camera image
Sony a6400
Sony a7R II
a7R II
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
June 10, 2015
Camera Type
Camera Size
Camera Weight

The Sony a6400 and Sony a7R II both scored 70/100, making them equal in our evaluation. These mirrorless cameras share similarities such as their camera type and identical scores. However, differences in their specifications can be observed.

The Sony a6400, released in 2019, has a lower launch price of $900 and is lighter, weighing 403g (0.89lbs). Its dimensions are 120 x 67 x 60mm, making it more compact than the a7R II. These features make the a6400 more affordable and portable.

On the other hand, the Sony a7R II, released in 2015, has a higher launch price of $3198 and is heavier, weighing 625g (1.38lbs). Its dimensions are 127 x 96 x 60mm, making it slightly larger than the a6400. Despite these downsides, some users may prefer the a7R II for its build quality and features that justify the higher price.

Choosing between these cameras depends on individual preferences, such as budget and portability. Both cameras perform well, but the Sony a6400 offers a more affordable and lightweight option, while the Sony a7R II caters to users seeking more advanced features at a higher price.

Sony a6400 vs a7R II Overview and Optics

The Sony a7R II triumphs over the Sony a6400 in optics with a score of 81/100 compared to the a6400’s 68/100. Both cameras share several specifications such as a CMOS sensor, Bionz X processor, and a compatible lens mount – Sony E for the a6400 and Sony FE for the a7R II.

The a7R II outperforms the a6400 in several aspects. It boasts a higher megapixel count of 42.4, allowing for more detailed and sharper images. The full-frame sensor size in the a7R II also contributes to better image quality, particularly in low light situations. Additionally, the a7R II has a higher DXOMARK sensor score of 98, which reflects its superior image quality. Furthermore, the a7R II features image stabilization, which helps in reducing camera shake and improving image sharpness.

On the other hand, the Sony a6400 has a faster shooting speed of 11 frames per second, compared to the a7R II’s 5 frames per second. This makes the a6400 more suitable for capturing fast-paced action or sports photography. However, this advantage does not compensate for the overall superior optics of the a7R II.

Considering the optics, the Sony a7R II is the clear winner due to its higher megapixel count, full-frame sensor, better DXOMARK score, and image stabilization. These features contribute to better image quality and performance. The Sony a6400, with its faster shooting speed, may be more suitable for specific situations like action photography, but it does not surpass the a7R II in terms of optics.

The higher the number of megapixels, the more detail the cameras sensor can capture.
24.2 MP
42.4 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
7952 x 5304 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
24 x 35.9 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
5 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 a7R II Video Performance

The Sony a6400 emerges as the clear winner in the video capabilities comparison, boasting a video score of 91/100, while the Sony a7R II lags behind with a score of 56/100. Both cameras share some common video specifications, such as a maximum video resolution of 4K and video dimensions of 3840 x 2160. However, the Sony a6400 surpasses the a7R II in other areas that contribute to its higher score.

The Sony a6400 offers an impressive maximum video frame rate of 120fps, allowing for smoother, more detailed slow-motion footage. This is a significant advantage over the Sony a7R II’s maximum frame rate of 30fps, which limits its slow-motion capabilities. Additionally, the a6400 features built-in time-lapse functionality, providing users with creative options for capturing stunning visuals over extended periods. The a7R II lacks this built-in feature, which may require users to invest in additional equipment or software to achieve a similar result.

The Sony a7R II does not hold any notable advantages over the a6400 in terms of video capabilities. Both cameras offer 4K video resolution and the same video dimensions, but the a7R II falls short in frame rate and time-lapse functionality. The a6400’s higher video score clearly reflects its superior video capabilities.

When comparing the video capabilities of the Sony a6400 and the Sony a7R II, the a6400 stands out as the superior choice. With a higher video score, faster maximum frame rate, and built-in time-lapse functionality, the Sony a6400 offers users a more comprehensive and versatile video experience.

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 a7R II Features and Benefits

The Sony a6400 emerges as the winner in the features comparison with a score of 81/100, while the Sony a7R II scores 57/100. Both cameras share common specifications, including a 3-inch screen size, flip screen functionality, and the absence of GPS. Additionally, both cameras are equipped with WiFi capabilities.

The a6400 outperforms the a7R II in several aspects. First, it comes with a touchscreen, a feature that the a7R II lacks. This allows for easier navigation and control of the camera settings. Second, the a6400 has Bluetooth connectivity, which is not present in the a7R II. This enables seamless connection with other devices, such as smartphones and tablets, for quick file transfers and remote control.

On the other hand, the a7R II has a superior screen resolution of 1,228,800 dots compared to the a6400’s 921,600 dots. This results in a sharper and clearer display, providing a better user experience when reviewing images and videos on the camera screen.

In terms of features, the Sony a6400 offers a more user-friendly and connected experience with its touchscreen and Bluetooth capabilities. However, the a7R II provides a higher quality display, which may be important for some users. Ultimately, the choice between these cameras depends on individual preferences and priorities regarding these specific features.

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
1,228,800 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 a7R II Storage and Battery

The Sony a6400 triumphs over the Sony a7R II in storage and battery with a score of 37/100 compared to the a7R II’s 16/100. Both cameras share some common specifications, such as having a single memory card slot and compatibility with SD/SDHC/SDXC and Memory Stick Duo cards. They also use the same battery type, the NP-FW50.

The a6400 outshines the a7R II in battery life, offering 410 shots per charge, while the a7R II only provides 290 shots. Additionally, the a6400 has the advantage of USB charging, which the a7R II lacks.

On the other hand, the a7R II accepts Memory Stick Pro Duo and Pro-HG Duo cards, giving it a slight edge in memory card compatibility. However, this advantage is not enough to make up for its shorter battery life and lack of USB charging.

Considering the storage and battery aspects, the Sony a6400 is the superior choice due to its longer battery life and convenient USB charging capability. The a7R II’s additional memory card compatibility does not compensate for its shortcomings in this category.

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
290 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
26 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
13.9 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 a7R II – Our Verdict

Sony a6400 vs a7R II Comparison image.

Are you still undecided about which camera is right for you? Have a look at these popular comparisons that feature the Sony a6400 or the Sony a7R II:

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