Sony a7R IV vs a9 II Comparison
Sony a7R IV
Sony a9 II
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Brand | Sony | Sony | |
Model | a7R IV | a9 II | |
Released Refers to the year this camera was officially made available for sale. | 2019 | 2019 | |
Announcement Date Refers to the date the manufacturer publicly announced the upcoming release and general specs of this camera. | July 16, 2019 | October 03, 2019 | |
Camera Type |  Mirrorless | Mirrorless | |
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The Sony a7R IV outperforms the Sony a9 II with a score of 84/100 compared to 82/100. Both cameras are mirrorless and were released in 2019, sharing similar dimensions (129 x 96 x 78mm for the a7R IV and 129 x 96 x 76mm for the a9 II) and weight (665g for the a7R IV and 678g for the a9 II). The a7R IV has the advantage of a lower launch price of $3500 compared to the a9 II’s $4500.
Despite its higher price, the a9 II does not surpass the a7R IV in terms of specifications. The a7R IV delivers better performance and offers more value for money. Both cameras are solid choices, but the Sony a7R IV stands out as the winner in this comparison.
Sony a7R IV vs a9 II Overview and Optics
The Sony a7R IV outperforms the Sony a9 II in optics with a score of 85/100 compared to 82/100. Both cameras share several specifications, including a CMOS sensor, Bionz X processor, full-frame sensor size, Sony FE lens mount, and image stabilization.
The a7R IV has a higher megapixel count at 61.2, resulting in more detailed and higher resolution images. Additionally, its sensor has a DXOMARK score of 99, which is superior to the a9 II’s score of 93. This difference indicates that the a7R IV has better color depth, dynamic range, and low-light performance.
On the other hand, the a9 II has a faster shooting speed of 20 frames per second (fps), double the a7R IV’s 10 fps. This makes the a9 II more suitable for capturing fast-moving subjects and action photography. However, it has a lower megapixel count of 24.2, which may not be ideal for photographers who prioritize image resolution.
In terms of optics, the Sony a7R IV is the better choice for photographers who need high-resolution images and better overall sensor performance. The higher DXOMARK score and megapixel count ensure that the a7R IV delivers superior image quality. Meanwhile, the Sony a9 II is better suited for those who require faster shooting speeds for action photography, despite having a lower megapixel count and DXOMARK score. Each camera caters to different photography needs, and the choice between them depends on the individual’s priorities and preferences.
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Optics
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Megapixels The higher the number of megapixels, the more detail the cameras sensor can capture. | 61.2 MP | 24.2 MP | |
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Image Resolution Image resolution is measured in pixels and megapixels, width by height. The higher the number, the higher its resolution. | 9504 x 6336 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. | CMOS | CMOS | |
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. | 23.8 x 35.7 mm | 23.8 x 35.6 mm | |
Sensor Format Refers to the most commonly used sensor sizes. |  Full Frame | 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. | 10 fps | 20 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 FE | 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. |  3:2 | 3:2 | |
Minimum ISO (Native) Refers to the lowest native (or 'base') ISO setting. Lower ISO are less sensitive to light but make a cleaner image. | 100 | 100 | |
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. | 32,000 | 51,200 | |
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. | 50 | 50 | |
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. | 102400 | 204800 | |
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/ 8000 s | 1/ 32000 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. | 425 | 693 | |
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. | Electronic | Electronic | |
Viewfinder Resolution | 5,760,000 dots | 3,686,400 dots |
Sony a7R IV vs a9 II Video Performance
The Sony a7R IV and Sony a9 II both have a video score of 70/100, indicating that their video capabilities are on par with each other. These cameras share several video specifications, such as a maximum video resolution of 4K, maximum video dimensions of 3840 x 2160, a maximum video frame rate of 30fps, and built-in time-lapse functionality.
While the video scores are equal, there may be certain aspects where one camera performs better than the other. For example, the Sony a7R IV might have a slight advantage in terms of video quality, dynamic range, or color rendition. On the other hand, the Sony a9 II could potentially excel in areas like autofocus performance, video stabilization, or low-light capabilities. However, these differences are not significant enough to impact the overall video score.
The Sony a7R IV and Sony a9 II both offer excellent video capabilities, making them suitable choices for videographers and content creators. Their shared features, such as 4K video resolution, 30fps frame rate, and time-lapse functionality, ensure that users can capture high-quality footage with ease. The equal video scores demonstrate that neither camera has a clear advantage over the other in terms of video performance.
Considering their video capabilities, both the Sony a7R IV and Sony a9 II are reliable and capable options for those looking to capture high-quality video content. The similarities in their video specifications make it difficult to declare a definitive winner, as both cameras are well-suited for a variety of video applications. Ultimately, the choice between these two cameras will depend on individual preferences and specific requirements for video production.
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Video
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Video Indicates if this camera is capable of recording video. |  | | |
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Max Video Resolution The best resolution this camera can capture video in. Modern cameras can capture up to 8K video. |  4K | 4K | |
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. | 30 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. | XAVC S, AVCHD Ver. 2.0, MP4 | XAVC S, AVCHD |
Sony a7R IV vs a9 II Features and Benefits
The Sony a7R IV and Sony a9 II both have a feature score of 83/100, making them equally strong competitors in terms of camera features. They share several specifications, including a 3-inch screen size, 1,440,000-dot screen resolution, touchscreen capabilities, flip screen, and the absence of GPS. Both cameras also come equipped with WiFi and Bluetooth connectivity.
The Sony a7R IV excels in its higher resolution, making it ideal for photographers who prioritize capturing highly detailed images. This camera’s high-resolution capabilities make it particularly suitable for landscapes, architecture, and studio work where fine details matter.
On the other hand, the Sony a9 II stands out for its impressive speed and autofocus performance. This camera is designed for fast-paced situations, such as sports and wildlife photography, where capturing the decisive moment is crucial. Its superior autofocus system ensures sharp images even when subjects are in motion.
While the Sony a7R IV is the better choice for high-resolution photography, the Sony a9 II is the better option for capturing fast action. Both cameras offer a strong set of features, including a 3-inch touchscreen with a flip screen, WiFi, and Bluetooth connectivity. Ultimately, the decision between these two cameras comes down to the specific needs and preferences of the photographer. The Sony a7R IV is ideal for those who prioritize high-resolution images, while the Sony a9 II is perfect for photographers who need speed and autofocus performance.
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Features
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Built-in Flash A built-in flash will often be positioned right above the lens. This will automatically pop up when you activate it. |   | | |
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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 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 | LCD | LCD | |
Touch Screen Touchscreen allows you to change camera settings and access menus with a swipe of your finger, instead of using buttons. |  | | |
Screen Size |  3" | 3" | |
Screen Resolution Screen dots indicate the resolution of the LCD screen by including each sub pixel. | 1,440,000 dots | 1,440,000 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. |  | | |
Wi-Fi |  | | |
Bluetooth Bluetooth capabilities allow you wireless control of your camera with other external devices. |  | | |
Sony a7R IV vs a9 II Storage and Battery
The Sony a7R IV and Sony a9 II tie in storage and battery with a score of 79/100. Both cameras have two memory card slots and accept SD, SDHC, and SDXC cards, with UHS-II compatibility. They also share the same NP-FZ100 battery type and offer USB charging capabilities.
The Sony a9 II slightly surpasses the a7R IV in battery life, providing 690 shots compared to the a7R IV’s 670 shots. This advantage may be beneficial for photographers who require longer shooting sessions without recharging or changing batteries.
On the other hand, the Sony a7R IV does not outperform the a9 II in any aspect of storage and battery. Consequently, the two cameras are essentially equal in this category.
Considering their storage and battery features, both the Sony a7R IV and Sony a9 II deliver reliable performance. Although the a9 II has a marginally longer battery life, the difference is minimal and may not impact the overall user experience.
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Storage and Battery
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Memory Card | SD / SDHC / SDXC (UHS-II compatible) | SD / SDHC / SDXC (UHS-II compatible) | |
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Dual Memory Card Slots |  | | |
Battery Type | NP-FZ100 | NP-FZ100 | |
Battery Life Approximately how long this cameras battery will last measured by how many photographs you will be able to take. | 670 shots | 690 shots | |
USB Charging |  | |
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DXOMARK Scores
Sensor scores tested by DXOMARK |
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Overall Score DXOMARK overall sensor score. | |||
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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.' | 26 bits | 25 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.' | 14.8 EVs | 14 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' | 3344 | 3434 |
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Scores
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Alternatives to the Sony a7R IV and a9 II
Are you still undecided about which camera is right for you? Have a look at these popular comparisons that feature the Sony a7R IV or the Sony a9 II:
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User Scores
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Sony a7R IV
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Sony a9 II
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B&H photo video |
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