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Sony a7 IV vs a9 II Comparison

Storage & Battery

Sony a7 IV

sony a7 iv

Sony a9 II

Sony a9 II
Sony a7 IV
Sony a9 II
a7 IV
a9 II
Announcement Date
October 21, 2021
October 03, 2019
Camera Type
Camera Size
Camera Weight

The Sony a7 IV emerges as the winner with a score of 84/100, while the Sony a9 II trails closely behind with 82/100. Both cameras are mirrorless, launched in 2021 and 2019 respectively, and share similar dimensions. The a7 IV measures 131 x 96 x 80mm and weighs 659g, while the a9 II measures 129 x 96 x 76mm and weighs 678g.

The a7 IV outperforms the a9 II with a lower launch price of $2499 compared to the a9 II’s $4500. This makes the a7 IV a more budget-friendly option without compromising on quality. On the other hand, the a9 II’s slightly smaller size and marginally higher score indicate that it may offer some advantages in terms of portability and performance.

Taking these factors into account, the Sony a7 IV is a better choice for those seeking a high-quality camera at a more affordable price, while the Sony a9 II may appeal to photographers prioritizing portability and performance.

Sony a7 IV vs a9 II Overview and Optics

The Sony a7 IV is the winner in optics, with a score of 85/100, compared to the Sony a9 II’s score of 82/100. Both cameras share several specifications, such as a CMOS sensor, full-frame sensor size, Sony FE lens mount, and image stabilization. However, the Sony a7 IV has some advantages that contribute to its higher score.

The Sony a7 IV boasts a higher megapixel count at 33, compared to the Sony a9 II’s 24.2 megapixels. This results in a more detailed and sharper image quality, which is particularly beneficial for large prints or heavy cropping. The a7 IV also has a superior processor, the Bionz XR, which enhances image processing speed and performance. Furthermore, the a7 IV has a higher DXOMARK sensor score of 97, indicating better overall image quality compared to the a9 II’s score of 93.

On the other hand, the Sony a9 II has a faster shooting speed at 20 frames per second, compared to the a7 IV’s 10 frames per second. This makes the a9 II more suitable for action and sports photography, where capturing fast-moving subjects is crucial.

Taking these factors into consideration, the Sony a7 IV is the better camera in terms of optics due to its higher megapixel count, superior processor, and better DXOMARK sensor score. However, the Sony a9 II still has its merits, particularly for photographers who prioritize shooting speed. Both cameras offer excellent performance, but the Sony a7 IV edges out the a9 II in the optics department.

33 MP
24.2 MP
Image Resolution
7008 x 4672 px
6000 x 4000 px
Sensor Type
Sensor Size
23.8 x 35.6 mm
23.8 x 35.6 mm
Sensor Format
Full Frame
Full Frame
Frame Rate
10 fps
20 fps
Lens Mount
Sony E
Sony FE
Image Processor
Bionz XR
Bionz X
Aspect Ratio
Minimum ISO (Native)
Maximum ISO (Native)
Minimum ISO (Expanded)
Maximum ISO (Expanded)
Minimum Shutter Speed
30 s
30 s
Maximum Shutter Speed
1/ 8000 s
1/ 32000 s
Autofocus Points
In-body Stabilization
Viewfinder Type
Viewfinder Resolution
3,686,400 dots
3,686,400 dots

Sony a7 IV vs a9 II Video Performance

The Sony a7 IV outperforms the Sony a9 II in video capabilities, scoring 91/100 compared to the a9 II’s 70/100. Both cameras share some common video specifications, including a maximum video resolution of 4K and dimensions of 3840 x 2160. Additionally, both cameras have built-in time-lapse functionality, which is a valuable feature for creating dynamic and engaging videos.

The Sony a7 IV boasts a higher maximum video frame rate of 120fps, while the Sony a9 II only reaches 30fps. This advantage allows the a7 IV to capture smoother, more detailed slow-motion footage, making it a more versatile option for videographers who require varied shooting capabilities. The a7 IV’s higher score reflects its superior performance in this area.

On the other hand, the Sony a9 II does not have any notable video advantages over the a7 IV. With a lower maximum video frame rate and no additional features to differentiate it from the a7 IV, the a9 II’s lower score is justified. The camera’s video performance is not poor, but it does not excel in any specific aspect when compared to the a7 IV.

Considering the differences in video capabilities, the Sony a7 IV is the clear winner. Its higher maximum video frame rate enables more creative and flexible shooting options, while the a9 II does not offer any unique video features to compete with the a7 IV. For those prioritizing video performance, the Sony a7 IV is the superior choice.

Max Video Resolution
Max Video Dimensions
3840 x 2160 px
3840 x 2160 px
Max Video Frame Rate
120 p
30 p
Time-Lapse Built In
Video File Format
MPEG-4, XAVC S, XAVC HS, XAVC S-I, H.264, H.265

Sony a7 IV vs a9 II Features and Benefits

The Sony a7 IV and Sony a9 II both have a feature score of 83/100, making them evenly matched in terms of features. They share several specifications, including a 3-inch screen, touchscreen capability, flip screen, and lack of GPS. Both cameras also have WIFI and Bluetooth connectivity.

The Sony a9 II has a superior screen resolution of 1,440,000 dots compared to the Sony a7 IV’s 1,040,000 dots. This higher resolution provides a clearer and more detailed display, enhancing the user’s experience when reviewing images or composing shots. This is the key advantage of the Sony a9 II over the Sony a7 IV.

However, the Sony a7 IV does not present any significant advantages over the Sony a9 II in terms of features. Both cameras offer a similar set of capabilities, making them suitable for various photography and videography needs.

Based on these comparisons, the Sony a9 II stands out due to its higher screen resolution. This advantage makes it a better choice for those who prioritize image quality and display clarity. On the other hand, the Sony a7 IV offers no unique benefits over the Sony a9 II, making it a less compelling option.

While both cameras have strong feature sets, the Sony a9 II’s superior screen resolution gives it a slight edge over the Sony a7 IV. Users should consider their individual preferences and requirements when choosing between these two high-performing cameras.

Built-in Flash
External Flash
Weather Sealing
Screen Type
Touch Screen
Screen Size
Screen Resolution
1,040,000 dots
1,440,000 dots
Flip Screen
Live View

Sony a7 IV vs a9 II Storage and Battery

The Sony a9 II edges out the Sony a7 IV in storage and battery, scoring 79/100 compared to the Sony a7 IV’s 76/100. Both cameras share similarities in this category, including two memory card slots, NP-FZ100 battery type, and USB charging capabilities.

The a9 II outperforms the a7 IV in battery life, offering 690 shots per charge compared to the a7 IV’s 580 shots. This advantage allows users to capture more images without worrying about recharging or changing batteries as often. In contrast, the a7 IV accepts both CFexpress Type A and SD (UHS-II compatible) memory cards, providing more versatility in storage options compared to the a9 II, which only accepts SD / SDHC / SDXC (UHS-II compatible) cards.

Despite the a7 IV’s storage flexibility, the a9 II’s superior battery life makes it the better choice for photographers who prioritize longer shooting sessions. However, the a7 IV remains a strong contender for those seeking more storage options in their camera.

Storage and Battery
Storage and Battery
Memory Card
CFexpress Type A, SD (UHS-II compatible)
SD / SDHC / SDXC (UHS-II compatible)
Dual Memory Card Slots
Battery Type
Battery Life
580 shots
690 shots
USB Charging
Sensor scores tested by DXOMARK
Overall Score
Portrait (Color Depth)
25.4 bits
25 bits
Landscape (Dynamic Range)
14.7 EVs
14 EVs
Sports (Low-Light ISO)

Sony a7 IV vs a9 II – Our Verdict

Sony a7 IV vs a9 II Comparison image.

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