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Sony A7R III vs Sony A9

Sony A7R III vs Sony A9 – Sony A9 the Sony’s flagship camera packs tremendous quality of specifications and the most inventive is its 693 AF points, which is most in any DSLR and mirrorless camera. Sony A7R III, in contrast, looks majestic in terms of specification, such as its AF system that is however doesn’t look better that A9, but it is just outstanding compared to any other DSLR and the Mirrorless camera around the world. Looking at the specs you can say that A7R III wears the coat of A9 and you should know that Sony A7R III uses the image sensor of A9.

Now look into the detail comparison of these two cameras!

Feature/Models

Sony A7R III

Sony A9

Megapixel 42.2 MP 24 megapixels
Sensor size Full frame (36 x 24 mm) Full frame (36 x 24 mm) sdfs
Image processor Bionz X Bionz X
Low pass Filter No No
AF system Contrast detect+ Phase detect Contrast Detect+ Phase detect
AF points

399 phase detection AF points

Contrast AF points: 425

693
ISO 100-102400 ISO 100-51200 (expands to 50-204800)
Shutter speed  1/8000 to 30 sec 1/32000 to 30 sec
Image Stabilization 5-axis 5-axis
Continuous shooting speed  10 fps 20fps
Video 4K @ 30fps 4K Video at 30 fps (3840 x 2160)
Display 3″ Rear Screen Tilting  LCD (1,440,800) 3″ Rear Screen Tilting  LCD (1,228,800)
Hot shoe  Yes  Yes
Wireless Built-in Built-in
Environmentally sealed Yes Yes
Battery life  650 shots 650 shots
Weight 657 g 673 g
Size  127 x 96 x 74 mm 127 x 96 x 74 mm
Price $3,198 $4,498.00

Image quality

Look at the image sensors of both cameras: Sony A7R III and Sony A9! A7R III combines a high-resolution 42.4 MP back-illuminated Exmor R CMOS image sensor, and A9, in contrast, features new stacked 24.2 MP Exmor RS image sensor. Technically, Sony A7R III should give more percentage of sharpness in image quality. However, Sony A9 grabs around 73% more pixels area that enhances the light gathering ability of the camera and we expect the amount of sharpness and detail more by A9. But one big advantage of Sony A7R III is that it employs high-res image of 42.4 MP, which is 75% more pixels than A9 that lets you get large print or high-resolution photos of the desired subject.


ISO

Sony A9 is superior in every place and in ISO it gently beats Sony A7R III, offering you highest sensitivity range of 204800, plus its LSI hardware inside the core, ensuring you very clean and consistent shooting in lowlight and captures images with minimal noise. Sony A7R III, in contrast, has one stop lesser ISO than Sony A9.


AF system

AF system inside both cameras are nearly equal. Both the cameras incorporates Contrast as well as phase detect sensor, but the AF points of Sony A9 is just unassailable with ” 693 focal plane phase detection AF points“, covering 93% of the frame ensuring all fast-moving subjects are captured. On the other hand, Sony A7R III is not short of any astounding (399 + 425 AF points). 399 focal-plane phase-detection AF points that cover approximately 68% of the image area in both the horizontal and vertical directions and 425 contrast AF points, which however, gives 2 times more accurate tracking of the subject compared to Sony A7R II, but unfortunately slightly lags behind A9. Moreover, A9 covers wider area of 93% with 60 AF/AE tracking calculations per second- most wider coverage offered by any camera of the current time. etc.


Shutter Speed

Sony A7R III avails the mechanical shutter of 1/8000 that may not be as superior as of Sony A9. Meanwhile, Sony A9 avails faster shutter speed 1/32000 s electronic shutter to minimizes the “rolling shutter” effect that  are commonly experienced with fast moving subjects. As a result Sony A9 will be able to capture sharp, crystal clear images with a wide open aperture. Due to faster shutter speed in A9, the user can shoot wide open in bright light!


Continuous shooting speed

Sony A9, enabling photographers to shoot at a blazing 20 fps with continuous AF/AE tracking for up to 362 JPEG or 241 RAW images, whereas A7R III offers Continuous Shooting at up to 10 fps with either Silent Shooting or Mechanical Shutter and full Auto Focus/Auto Exposure tracking.


Verdict

Around $1300 more you have to invest to get Flagship Sony A9, but the camera worth each penny since it offers some unparalleled specifications, such as remarkable AF system, burst rate and a few more. Sony A7R III is measured as one of the best high-end professional cameras in terms of specifications and it is a solid upgrade over A7R II. So, Sony A9 is the camera for Sports, peak action, wedding, event and photojournalism etc. Sony A7R III can be the camera for the photographers having no compromise in image quality. Probably the camera is not at all good for sports photography.

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