Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Panasonic G9 and Sony A99 side-by-side from the front, back and top in their relative dimensions. Panasonic G9 has external dimensions of 137 x 97 x 92 mm (5.39 x 3.82 x 3.62″) and weighs 658 g (1.45 lb / 23.21 oz) (including batteries). Sony A99 has external dimensions of 147 x 111 x 78 mm (5.79 x 4.37 x 3.07″) and weighs 812 g (1.79 lb / 28.64 oz) (including batteries).
Below you can see the front view size comparison of Panasonic G9 and Sony A99. Panasonic G9 is 10mm narrower and 14mm shorter than Sony A99 but it is also 14mm thicker.
![Panasonic G9 vs Sony A99 Camera Size Comparison - Front View]()
Comparison image of Panasonic G9 and Sony A99 Size, Weight and External Dimensions - Front View
Now lets look at the top view comparison of Panasonic G9 and Sony A99.
![Panasonic G9 vs Sony A99 Camera Size Comparison - Top View]()
Top View Comparison image of Panasonic G9 and Sony A99 Size
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Panasonic G9 is significantly lighter (154g ) than the Sony A99 which may become a big advantage especially on long walking trips.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you have to also take into account the lenses that you will be using with these bodies. Since Sony A99 has a Full frame sensor and Panasonic G9 has a smaller Four Thirds sensor, Panasonic G9's lenses for a similar focal length and aperture will generally be lighter and smaller than the Sony A99 lenses.
Weight Comparison
DSLR Cameras
Thickness Comparison
DSLR Cameras
Weather Sealing
Both G9 and A99 have weather sealings in their body, making them resistant to water and dust.
LCD Screen Size and Features
Panasonic G9 and Sony A99's LCD screens has the same diagonal size of 3".
Both cameras feature
Fully Articulating screens where you can change the angle of the screen to make it easier to shoot from waist or over the head levels. Fully articulating screens are also useful for taking Selfie shots and video.
Panasonic G9 has a 20.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor . On the other hand, Sony A99 has a 24.0MP Full frame (35.8 x 23.8 mm ) sized CMOS sensor and features Bionz processor.
Another difference between these two cameras is that Panasonic G9's sensor lacks anti-alias (Low-Pass) filter. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moire occurring in certain scenes.
Below you can see the G9 and A99 sensor size comparison.
![Panasonic G9 vs Sony A99 Sensor Size Comparison]()
Sensor Size and Resolution Comparison image of Panasonic G9 and Sony A99 Cameras
As seen above, Sony A99 has a 3.8x Larger sensor area than Panasonic G9. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.
Number of available lenses is a big decision factor while choosing your interchangeable lens camera. When we look at the available lenses for these two cameras, we see that Sony A99 has an advantage over Panasonic G9 There are 143 lenses for Sony A99's Sony/Minolta Alpha mount, on the other hand there are only 107 lenses for Panasonic G9's Micro Four Thirds lens mount.
Another important factor is the availability of image stabilization. Both Panasonic G9 and Sony A99 has Sensor based Image stabilization which means that all the lenses will be stabilized in these bodies. G9's built-in Image stabilization system is effective to compensate vibration up to 6.5-stops according to CIPA standards.
| Lens Type |
# of Panasonic G9 Lenses |
# of Sony A99 Lenses |
| Standard Zoom |
15 |
20 (9 Full Frame) |
| Standard Prime |
13 |
9 (7 Full Frame) |
| Wideangle Zoom |
5 |
11 (4 Full Frame) |
| Wideangle Prime |
29 |
18 (16 Full Frame) |
| Telephoto Zoom |
18 |
26 (22 Full Frame) |
| Telephoto Prime |
9 |
12 (12 Full Frame) |
| SuperZoom |
8 |
19 (4 Full Frame) |
| Wideangle Fisheye Prime |
5 |
4 (2 Full Frame) |
| Macro Prime |
4 |
12 (9 Full Frame) |
| Perspective Control Prime |
n/a |
10 (10 Full Frame) |
| Telephoto Mirror Prime |
1 |
2 (1 Full Frame) |
| TOTAL |
107 |
143 (96 Full Frame) |
Now let's compare some sample lenses from each mount with typical Focal ranges for Panasonic G9 and Sony A99 to see how these lenses compares:
Fast Standard Zoom Lenses
Fast Tele Zoom Equivalent Lenses
Fast Normal Prime Equivalent Lenses
Fast Wideangle Zoom Equivalent Lenses
24-105mm f4 Equivalent Lenses
Super-Tele Zoom Equivalent Lenses
In this section, we rank and compare Panasonic G9 and Sony A99 for five different photography types in order to make your decision process easier in case you are specifically interested in one or more of these areas.
Panasonic G9 for Portrait Photography
Sony A99 for Portrait Photography
Large Four Thirds (17.3 x 13 mm) sensor
Very High Resolution Sensor: 20.0MP
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Read the details
Large Full frame (35.8 x 23.8 mm) sensor
Very High Resolution Sensor: 24.0MP
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Read the details
Panasonic G9 for Street Photography
Sony A99 for Street Photography
Large Four Thirds (17.3 x 13 mm) sensor
Image Stabilization
Electronic Built-in Viewfinder
Live-view
Face-Detection Focusing
Fully Articulated LCD Screen
Medium sized Body
Read the details
Large Full frame (35.8 x 23.8 mm) sensor
Image Stabilization
Electronic Built-in Viewfinder
Live-view
Face-Detection Focusing
Fully Articulated LCD Screen
Large Body
Read the details
Panasonic G9 for Sports Photography
Sony A99 for Sports Photography
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Fast Continuous Shooting: 20.0fps
Environmental Sealings
Fast Max shutter speed: 1/8000s
225 Focus Points
Wireless Connection
Read the details
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Fast Continuous Shooting: 10.0fps
Environmental Sealings
Fast Max shutter speed: 1/8000s
11 Cross Type Focus sensors
19 Focus Points
Good Low Light ISO
Read the details
Panasonic G9 for Daily Photography
Sony A99 for Daily Photography
Large Four Thirds (17.3 x 13 mm) sensor
Environmental Sealings
Medium size Body
658g
Body Thickness 92mm
Read the details
Large Full frame (35.8 x 23.8 mm) sensor
Environmental Sealings
Large Body
812g
Body Thickness 78mm
Read the details
Panasonic G9 for Landscape Photography
Sony A99 for Landscape Photography
Large Four Thirds (17.3 x 13 mm) sensor
Very High Resolution Sensor: 20.0MP
Environmental Sealings
Live-view
Read the details
Large Full frame (35.8 x 23.8 mm) sensor
Very High Resolution Sensor: 24.0MP
Environmental Sealings
Live-view
Built-in GPS
Read the details
You may have already made your decision about which camera suits better for your needs and your budget so far but in case you wonder how we rated Panasonic G9 and Sony A99, below you can find their scores in five different aspects.
Our Decision Algorithm dynamically scores cameras using 63 different specs, current price and DxO Mark scores (where possible) in order to make a more objective and consistent comparison.
Here is a summary of how Panasonic G9 and Sony A99 scores compare:
Panasonic G9
Ranked
#35 out of 85 in SLR-style mirrorless cameras
Ranked
#59 out of 1219 in all Cameras
Sony A99
Ranked
#17 out of 94 in Mid-size SLR cameras
Ranked
#67 out of 1219 in all Cameras
Panasonic G9 has a higher Overall Score than the Sony A99. It also has more features, more compact body and offers higher value for the money. But there is one area that G9 trails behind the A99: Imaging.
If image quality is the most important aspect in a camera, choose the Sony A99. If not, we recommend the Panasonic G9.
| General |
Panasonic Lumix DC-G9 |
Sony SLT-A99 |
| Brand |
Panasonic |
Sony |
| Announced |
2017-11-08 |
2012-12-12 |
| Body Type |
SLR-style mirrorless |
Mid-size SLR |
Sensor |
|
|
| Type |
CMOS |
CMOS |
| Size |
Four Thirds |
Full frame |
| Dimensions |
17.3 x 13 mm |
35.8 x 23.8 mm |
| Area |
224.90mm2 |
852.04mm2 |
| Megapixels |
20 megapixels |
24 megapixels |
| Max Resolution |
5184 x 3888 |
6000 x 4000 |
| Max Native Light sensitivity |
25,600 ISO |
25,600 ISO |
| Min Native Light sensitivity |
200 ISO |
100 ISO |
| Min Boosted Light Sensitivity |
100 ISO |
- |
| RAW Support |
|
|
Autofocus |
|
|
| AF Touch |
|
|
| AF Continuous |
|
|
| AF Single |
|
|
| AF Tracking |
|
|
| AF Selective |
|
|
| AF Center |
|
|
| AF Multi Area |
|
|
| AF Live View |
|
|
| AF Face Detection |
|
|
| AF Contrast Detection |
|
|
| AF Phase Detection |
|
|
| Number of Focus Points |
225 |
19 |
Lens |
|
|
| Manual Focus |
|
|
| Lens Mount |
Micro Four Thirds |
Sony/Minolta Alpha |
| Number of Available Lenses |
107 |
143 |
Screen |
|
|
| Type |
Fully Articulated |
Fully Articulated |
| Size |
3" |
3" |
| Resolution |
1,040k dots |
1,229k dots |
| Touch Screen |
|
|
Viewfinder |
|
|
| Viewfinder |
Electronic |
Electronic |
| Viewfinder Resolution |
3,680k dots |
2,359k dots |
| Viewfinder Coverage |
100% |
100% |
| Viewfinder Magnification |
0.83x |
0.71x |
Photography Features |
|
|
| Max Mechanical Shutter |
1/8000s |
1/8000s |
| Max Electronic Shutter |
1/32000s |
n/a |
| Shutter Priority |
|
|
| Aperture Priority |
|
|
| Manual Exposure Mode |
|
|
| Custom White Balance |
|
|
| Image Stabilization |
Sensor-shift |
Sensor-shift |
| Built-in Flash |
|
|
| Max Flash Sync |
n/a |
1/250s |
| External Flash |
|
|
| Continuous Shooting |
20.0 fps |
10.0 fps |
| Multi-Segment |
|
|
| Average |
|
|
| Spot |
|
|
| Partial |
|
|
| AF-Area |
|
|
| Center Weighted |
|
|
| AE Bracketing |
|
|
| WB Bracketing |
|
|
Video Features |
|
|
| Max Video Resolution |
3840 x 2160 |
1920 x 1080 |
| Video Formats |
MPEG-4, AVCHD, H.264 |
MPEG-4, AVCHD, H.264 |
| Microphone Port |
|
|
| Headphone Port |
|
|
Connectivity |
|
|
| Wireless Connectivity |
Built-In |
None |
| HDMI |
|
|
Physical |
|
|
| Environmental Sealing |
|
|
| Weight |
658g |
812g |
| Dimensions |
137 x 97 x 92mm |
147 x 111 x 78mm |
| Battery Life |
400 shots |
500 shots |
Other Features |
|
|
| Timelapse Recording |
|
|
| GPS |
None |
BuiltIn |
DxO Sensor Scores |
|
|
| DxO Overall Score |
not tested |
89 |
| DxO Color Depth |
not tested |
25.0 |
| DxO Dynamic Range |
not tested |
14.0 |
| DxO Low Light ISO |
not tested |
1555 |
|
Report a correction |
Report a correction |