Panasonic G9 vs Sony A7R III

Panasonic G9 uses the latest AF technology called “Depth From Focus”, whereas Sony A7R III is Hunk! Not only in case of AF system but it is totally an expensive package comes with class leading Full-Frame image sensor and a few more specifications at the core. Panasonic G9, on the other hand, for its unrivaled 4K video capability takes the cinematographers to the next level of shooting.

Let’s go in detail comparison and see which camera is going to top the contrast!

Panasonic G9 vs Sony A7R III!

Features / Models

Panasonic G9

Sony A7R III

Megapixel 20 Megapixels 42.2 MP
Sensor size / type Four Thirds (17.3 x 13 mm) Full frame (36 x 24 mm)
Image processor
Venus Engine 10 Bionz X
Low pass filter No No
Image stabilization 5-Axis Sensor Stabilization; Dual I.S. 2 5-Axis
AF System Contrast detect sensor Contrast detect sensor + Phase detection
AF points 225

399 phase detection AF points

Contrast AF points: 425

ISO 100-25600 100-102400
Shutter Min/Max 60 1/32000 s 30sec 1/8000 sec
Top Continuous Shooting Speed 20 fps 10fps
Video  4K @ 60p 4K @ 30fps
Display 3.0″ 1.04m-Dot Free-Angle Touchscreen 3″ Rear Screen Tilting  LCD (1,440,800)
Hot-shoe Yes Yes
Battery Life (CIPA) 650 shots 350 shots
Wireless connectivity Built-In Built-In
Weather sealed  Yes Yes
Dimensions  137 x 97 x 92 mm 127 x 96 x 74 mm
Weight 658 g 657 g

Image quality

High Resolution of 42 MP and Full-Frame BIS sensor at the heart of A7R III, which combines gapless on-chip lens design and AR (anti-reflective) on the surface of the sensor that ultimately increases the ability to capture enormous light. As a result, high sensitivity with low-noise performance and wide dynamic range will be surely achieved. On the other hand, Panasonic G9 looks slim down because uses M4/3 sensors, which is comparatively smaller than Full frame of Sony A7R II and offers only 20 MP resolution (22 MP lesser than A7R II), which clearly indicates that we can notice real difference in the image quality.

But Panasonic G9 gets advantage since comes with new High Resolution mode that superbly produces an 80-megapixel equivalent (10368 x 7776) image by fabricating 8 consecutively shot images while shifting the sensor. This method ensures that without the need for software processing the camera can produce even RAW also along with JPEG. That high resolution photo is ideal for landscape and product photography using a tripod.

AF system

Both have different AF hardware inside. However, Panasonic claimed the blazing fast focusing of the subjects that lock onto the subjects as quickly just 0.04 sec since its latest AF technology called “DFD (Depth from Focus)”. On the other hand, A7R III does also have an advanced image sensor and AF algorithm. We can see that Sony A7R III employs the Fast Hybrid AF system (Contrast + Phase) that delivers far superior AF coverage, speed and tracking performance. Moreover, Moreover, A7R II offers comprehensive AF coverage that offers creative 399 focal-plane phase-detection AF points – that work together with 425 contrast AF points, allowing camera to achieve super fast focus response.

Now, take a look to the AF system of Panasonic G9 — Honestly, G9 is best in the Micro Four Thirds range, but it looks like A7R II is the unassailable challenger for G9 standing in front, looking by the incredible AF system. However, Panasonic G9 comes with a Depth from Defocus and Contrast AF technology that works together with contrast AF technology that comprehensively calculates the distance of the subjects and analyze as per form, size and even motion of the subjects. The image sensor inside the core of G9 features distinctive 225 AF points, allowing the users to choose focus areas as per the specific composition required and with the help of joystick located on the thumb position, they can control it easily.

As we are moving further Panasonic added some marvelous features to G9 including Post Focus Function, which is highly beneficial for macro shooting. Next feature is Focus stacking Function enables users to take multiple images of the same frame with different focus points then you can combine them into one image with the defocus as you like.


If you want to get more lowlight flexibility then Sony A7R III offers expandable ISO range of 102400, plus this camera is backed up with 42.4 MP back-illuminated CMOS sensor that fairly helps the users to snap much clear images with minimum noise without degrading details. On the other hand, Panasonic G9 uses highest Expandable ISO of 25600, mayn’t be so effective in lowlight shooting.

Shutter speed

The big advantage of faster shutter speed is that it allows the users to shoot wide open at bright light. Moreover, the camera with faster shutter speed comfortably captures fast moving subjects. Here, in this comparison, you can see that G9 avails faster shutter speed of 1/32000 sec, whereas the A7R III users have to rely on 1/8000 sec only.

Continuous shooting speed

Sports photographers must be happy seeing G9 burst speed that is 20fps. Yes! With the help of 20 fps, sports photographers can take advantage of every single frame to seize the subject and capture stunning sports photos. On the other side, A7R III offers 10fps only.


G9 offers 3480 x 2160p@ 60fps (4K) with no time limit, making it the top rating camera for the cinema photographers. On the other hand, Sony A7R III does also offer 3840 x 2160p@ 30 FPS (with time limit). Moreover, Panasonic also added extra video features in the line to give the professional shooters never before experience.


Panasonic G9 lets you capture around 650 shots at a time, whereas A7R III allows you take almost 350 shots only in one time charge.


Between these two cameras, Sony A7R III manages its things in every section, whereas Panasonic G9 comes with enhanced 4K facility and has dedicated AF system that trades excellency in the affordable price tag. Sony A7R III is a massive camera for professional shooters who love shooting videos equally as stills. So, the video lovers should go with G9 that gives some unconditional features to give you wonderful experience of video shooting.

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