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Sony a7R IV vs a9 Comparison

Optics
Video
Features
Storage & Battery

Sony a7R IV

sony a7r iv
Winner!
84%

Sony a9

Sony a9 Camera image
80%
Sony a7R IV
vs
Sony a9
Price
Brand
Sony
Sony
Model
a7R IV
a9
Released
2019
2017
Announcement Date
July 16, 2019
April 19, 2017
Camera Type
Mirrorless
Mirrorless
Camera Size
Camera Weight

The Sony a7R IV outperforms the Sony a9 with a score of 84/100 compared to 80/100. Both cameras are mirrorless, announced in 2019 and 2017, respectively. They share similar dimensions, with the a7R IV measuring 129 x 96 x 78mm and the a9 at 127 x 96 x 63mm. Their weight is almost identical, with the a7R IV weighing 665g and the a9 at 673g.

The a7R IV has the advantage of a lower launch price of $3500 compared to the a9’s $4500. However, the a9’s slimmer depth may be appealing to some users. Despite the slight difference in size, the a7R IV offers better overall performance, justifying its higher score. Both cameras have their unique features, but the a7R IV stands out as the superior option.

Sony a7R IV vs a9 Overview and Optics

The Sony a7R IV takes the lead in optics with a score of 85/100, outperforming the Sony a9, which scored 81/100. Both cameras share common specifications, including a CMOS sensor, Bionz X processor, full-frame sensor size, Sony FE lens mount, and image stabilization.

The a7R IV excels with its 61.2-megapixel resolution, significantly higher than the a9’s 24.2 megapixels, enabling it to capture more detail and produce higher-quality images. Additionally, the a7R IV boasts a DXOMARK sensor score of 99, compared to the a9’s score of 92, indicating better overall sensor performance.

On the other hand, the Sony a9 does have some advantages over the a7R IV, particularly in shooting speed. The a9 can capture images at a rapid 20 frames per second, double the a7R IV’s 10 frames per second. This makes the a9 more suitable for fast-paced action and sports photography, where capturing the perfect moment is crucial.

In terms of optics, the Sony a7R IV is the superior camera, offering higher resolution and better sensor performance. However, the Sony a9’s faster shooting speed may be more appealing to photographers who prioritize capturing fast-moving subjects. Ultimately, the choice between these two cameras depends on the specific requirements and preferences of the photographer.

Optics
Optics
85%
81%
Megapixels
61.2 MP
24.2 MP
Image Resolution
9504 x 6336 px
6000 x 4000 px
Sensor Type
CMOS
CMOS
Sensor Size
23.8 x 35.7 mm
23.8 x 35.6 mm
Sensor Format
Full Frame
Full Frame
Frame Rate
10 fps
20 fps
Lens Mount
Sony FE
Sony FE
Image Processor
Bionz X
Bionz X
Aspect Ratio
3:2
3:2
Minimum ISO (Native)
100
100
Maximum ISO (Native)
32,000
51,200
Minimum ISO (Expanded)
50
50
Maximum ISO (Expanded)
102400
204800
Minimum Shutter Speed
30 s
30 s
Maximum Shutter Speed
1/ 8000 s
1/ 8000 s
Autofocus Points
425
693
In-body Stabilization
Viewfinder Type
Electronic
Electronic
Viewfinder Resolution
5,760,000 dots
3,686,400 dots

Sony a7R IV vs a9 Video Performance

The Sony a7R IV outperforms the Sony a9 in video capabilities, scoring 70 out of 100 compared to the a9’s 56. Both cameras have 4K max video resolution, 3840 x 2160 max video dimensions, and 30fps max video frame rate. However, there are differences that contribute to the a7R IV’s higher score.

The a7R IV has built-in time-lapse functionality, which the a9 lacks. This feature allows the a7R IV to capture a series of images over a period of time and combine them into a single video, showcasing changes in the scene. This makes the a7R IV more versatile for creative videography.

The Sony a9, on the other hand, does not have any significant advantages over the a7R IV in terms of video capabilities. Both cameras share the same core video specs, but the a9’s lower score results from its lack of time-lapse functionality.

Considering these points, the Sony a7R IV is the better option for videography due to its time-lapse feature, which enhances its creative potential. The Sony a9, while still a capable camera, does not offer any major advantages in video capabilities compared to the a7R IV. Therefore, for those who prioritize video performance, the Sony a7R IV is the superior choice.

Video
Video
70%
56%
Video
Max Video Resolution
4K
4K
Max Video Dimensions
3840 x 2160 px
3840 x 2160 px
Max Video Frame Rate
30 p
30 p
Time-Lapse Built In
Video File Format
XAVC S, AVCHD Ver. 2.0, MP4
XAVC S, AVCHD Ver. 2.0, MP4

Sony a7R IV vs a9 Features and Benefits

The Sony a7R IV and the Sony a9 both have a feature score of 83 out of 100, making them equally competitive in terms of specifications. Both cameras have a 3-inch screen size, a screen resolution of 1,440,000 dots, and a touchscreen. Additionally, both models feature a flip screen, GPS, Wi-Fi, and Bluetooth connectivity.

Despite the identical scores, the Sony a7R IV has some advantages over the Sony a9. The a7R IV offers a higher resolution sensor at 61 megapixels compared to the a9’s 24 megapixels, which results in greater image detail and larger print sizes. Furthermore, the a7R IV has a better color depth and dynamic range, allowing for more vibrant and detailed images in various lighting conditions.

On the other hand, the Sony a9 has some benefits over the a7R IV. The a9 provides faster continuous shooting at 20 frames per second versus the a7R IV’s 10 frames per second, making it better suited for capturing fast-moving subjects, such as in sports and wildlife photography. Additionally, the a9 has a superior autofocus system with more focus points and faster tracking, ensuring sharper images and improved subject tracking in challenging situations.

After analyzing the features of both cameras, it is clear that the Sony a7R IV excels in image quality and detail, while the Sony a9 is better suited for action and sports photography due to its faster continuous shooting and autofocus capabilities. Both cameras provide excellent overall performance, with their shared features making them versatile choices for various photography needs.

Features
Features
83%
83%
Built-in Flash
External Flash
GPS
Weather Sealing
Screen Type
LCD
LCD
Touch Screen
Screen Size
3"
3"
Screen Resolution
1,440,000 dots
1,440,000 dots
Flip Screen
Live View
Wi-Fi
Bluetooth

Sony a7R IV vs a9 Storage and Battery

The Sony a7R IV outperforms the Sony a9 in storage and battery with a score of 79/100, compared to the a9’s 65/100. Both cameras share common specifications, including two memory card slots and compatibility with SD, SDHC, and SDXC (UHS-II) cards. They also use the same NP-FZ100 battery type.

The a7R IV has a slightly longer battery life, allowing for 670 shots, while the a9 provides 650 shots. Additionally, the a7R IV offers USB charging, a feature absent in the a9. This advantage makes the a7R IV more convenient for on-the-go charging and extended shooting sessions.

On the other hand, the a9 does not have any notable advantages in storage and battery over the a7R IV. Therefore, the a7R IV is the better choice for photographers who prioritize longer battery life and charging flexibility.

Storage and Battery
Storage and Battery
79%
65%
Memory Card
SD / SDHC / SDXC (UHS-II compatible)
SD / SDHC / SDXC (UHS-II compatible)
Dual Memory Card Slots
Battery Type
NP-FZ100
NP-FZ100
Battery Life
670 shots
650 shots
USB Charging
DXOMARK Scores
Sensor scores tested by DXOMARK
Overall Score
99%
92%
Portrait (Color Depth)
26 bits
24.9 bits
Landscape (Dynamic Range)
14.8 EVs
13.3 EVs
Sports (Low-Light ISO)
3344
3517
Scores

Sony a7R IV vs a9 – Our Verdict

Sony a7R IV vs a9 Comparison image.

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