Panasonic GX9 vs Pentax K-x
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60 Features
80 Overall
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Panasonic GX9 vs Pentax K-x Key Specs
(Full Review)
- 20MP - Four Thirds Sensor
- 3" Tilting Display
- ISO 200 - 25600
- Sensor based 5-axis Image Stabilization
- No Anti-Alias Filter
- 3840 x 2160 video
- Micro Four Thirds Mount
- 407g - 124 x 72 x 47mm
- Introduced February 2018
(Full Review)
- 12MP - APS-C Sensor
- 2.7" Fixed Screen
- ISO 100 - 6400 (Expand to 12800)
- Sensor based Image Stabilization
- 1/6000s Maximum Shutter
- 1280 x 720 video
- Pentax KAF2 Mount
- 580g - 123 x 92 x 68mm
- Launched December 2009
Pentax 17 Pre-Orders Outperform Expectations by a Landslide Panasonic GX9 vs Pentax K-x Overview
Its time to look a bit more in depth at the Panasonic GX9 and Pentax K-x, former being a Advanced Mirrorless while the latter is a Entry-Level DSLR by companies Panasonic and Pentax. There exists a large gap among the resolutions of the GX9 (20MP) and K-x (12MP) and the GX9 (Four Thirds) and K-x (APS-C) posses different sensor measurements.
Japan-exclusive Leica Leitz Phone 3 features big sensor and new modesThe GX9 was unveiled 8 years later than the K-x and that is a fairly serious difference as far as camera technology is concerned. Both cameras have different body design with the Panasonic GX9 being a Rangefinder-style mirrorless camera and the Pentax K-x being a Compact SLR camera.
Before we go right into a full comparison, here is a quick synopsis of how the GX9 matches up versus the K-x for portability, imaging, features and an overall grade.
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The following is a preview of the gallery photos for Panasonic Lumix DC-GX9 & Pentax K-x. The full galleries are viewable at Panasonic GX9 Gallery & Pentax K-x Gallery.
Reasons to pick Panasonic GX9 over the Pentax K-x
| GX9 | K-x | |||
|---|---|---|---|---|
| Launched | February 2018 | December 2009 | More recent by 100 months | |
| Screen type | Tilting | Fixed | Tilting screen | |
| Screen dimensions | 3" | 2.7" | Bigger screen (+0.3") | |
| Screen resolution | 1240k | 230k | Sharper screen (+1010k dot) | |
| Touch friendly screen | Quickly navigate |
Reasons to pick Pentax K-x over the Panasonic GX9
| K-x | GX9 |
|---|
Common features in the Panasonic GX9 and Pentax K-x
| GX9 | K-x | |||
|---|---|---|---|---|
| Manual focus | Very exact focus | |||
| Selfie screen | Lacking selfie screen |
Panasonic GX9 vs Pentax K-x Physical Comparison
When you are aiming to lug around your camera, you should take into account its weight and volume. The Panasonic GX9 has got exterior measurements of 124mm x 72mm x 47mm (4.9" x 2.8" x 1.9") having a weight of 407 grams (0.90 lbs) while the Pentax K-x has sizing of 123mm x 92mm x 68mm (4.8" x 3.6" x 2.7") with a weight of 580 grams (1.28 lbs).
Contrast the Panasonic GX9 and Pentax K-x in our newest Camera & Lens Size Comparison Tool.
Bear in mind, the weight of an ILC will differ depending on the lens you are utilizing at that moment. Underneath is a front view sizing comparison of the GX9 against the K-x.

Factoring in dimensions and weight, the portability grade of the GX9 and K-x is 82 and 69 respectively.
Panasonic GX9 vs Pentax K-x Sensor Comparison
Normally, it's difficult to picture the gap in sensor measurements just by viewing a spec sheet. The visual here should offer you a far better sense of the sensor sizing in the GX9 and K-x.
As you can see, both of those cameras have different megapixels and different sensor measurements. The GX9 having a smaller sensor is going to make getting shallower depth of field tougher and the Panasonic GX9 will result in extra detail having an extra 8 Megapixels. Higher resolution can also help you crop photographs a bit more aggressively. The more modern GX9 provides an edge when it comes to sensor innovation.
Panasonic GX9 vs Pentax K-x Screen and ViewFinder
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Panasonic GX9 vs Pentax K-x Specifications
| Panasonic Lumix DC-GX9 | Pentax K-x | |
|---|---|---|
| General Information | ||
| Manufacturer | Panasonic | Pentax |
| Model | Panasonic Lumix DC-GX9 | Pentax K-x |
| Category | Advanced Mirrorless | Entry-Level DSLR |
| Introduced | 2018-02-13 | 2009-12-23 |
| Physical type | Rangefinder-style mirrorless | Compact SLR |
| Sensor Information | ||
| Powered by | Venus Engine | Prime |
| Sensor type | CMOS | CMOS |
| Sensor size | Four Thirds | APS-C |
| Sensor dimensions | 17.3 x 13mm | 23.6 x 15.8mm |
| Sensor area | 224.9mm² | 372.9mm² |
| Sensor resolution | 20 megapixels | 12 megapixels |
| Anti aliasing filter | ||
| Aspect ratio | 1:1, 4:3, 3:2 and 16:9 | 3:2 |
| Maximum resolution | 5184 x 3888 | 4288 x 2848 |
| Maximum native ISO | 25600 | 6400 |
| Maximum boosted ISO | - | 12800 |
| Min native ISO | 200 | 100 |
| RAW pictures | ||
| Min boosted ISO | 100 | - |
| Autofocusing | ||
| Manual focus | ||
| Touch focus | ||
| Autofocus continuous | ||
| Autofocus single | ||
| Autofocus tracking | ||
| Autofocus selectice | ||
| Center weighted autofocus | ||
| Multi area autofocus | ||
| Live view autofocus | ||
| Face detect focus | ||
| Contract detect focus | ||
| Phase detect focus | ||
| Number of focus points | 49 | 11 |
| Lens | ||
| Lens mounting type | Micro Four Thirds | Pentax KAF2 |
| Number of lenses | 107 | 151 |
| Crop factor | 2.1 | 1.5 |
| Screen | ||
| Type of display | Tilting | Fixed Type |
| Display diagonal | 3" | 2.7" |
| Resolution of display | 1,240 thousand dots | 230 thousand dots |
| Selfie friendly | ||
| Liveview | ||
| Touch capability | ||
| Display technology | - | TFT LCD monitor |
| Viewfinder Information | ||
| Viewfinder | Electronic | Optical (pentamirror) |
| Viewfinder resolution | 2,760 thousand dots | - |
| Viewfinder coverage | 100% | 96% |
| Viewfinder magnification | 0.7x | 0.57x |
| Features | ||
| Lowest shutter speed | 60 seconds | 30 seconds |
| Highest shutter speed | 1/4000 seconds | 1/6000 seconds |
| Highest quiet shutter speed | 1/16000 seconds | - |
| Continuous shooting rate | 9.0fps | 5.0fps |
| Shutter priority | ||
| Aperture priority | ||
| Expose Manually | ||
| Exposure compensation | Yes | Yes |
| Custom white balance | ||
| Image stabilization | ||
| Built-in flash | ||
| Flash range | 6.00 m (at ISO 200) | 16.00 m |
| Flash options | Auto, auto w/redeye reduction, forced on, forced on w/redeye reduction, slow sync, slow sync w/redeye reduction, forced off | Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless |
| Hot shoe | ||
| AEB | ||
| White balance bracketing | ||
| Highest flash synchronize | - | 1/180 seconds |
| Exposure | ||
| Multisegment | ||
| Average | ||
| Spot | ||
| Partial | ||
| AF area | ||
| Center weighted | ||
| Video features | ||
| Supported video resolutions | - | 1280 x 720 (24 fps), 640 x 416 (24 fps) |
| Maximum video resolution | 3840x2160 | 1280x720 |
| Video file format | MPEG-4, AVCHD, H.264 | Motion JPEG |
| Mic support | ||
| Headphone support | ||
| Connectivity | ||
| Wireless | Built-In | None |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | Yes | USB 2.0 (480 Mbit/sec) |
| GPS | None | None |
| Physical | ||
| Environment sealing | ||
| Water proof | ||
| Dust proof | ||
| Shock proof | ||
| Crush proof | ||
| Freeze proof | ||
| Weight | 407 grams (0.90 lbs) | 580 grams (1.28 lbs) |
| Physical dimensions | 124 x 72 x 47mm (4.9" x 2.8" x 1.9") | 123 x 92 x 68mm (4.8" x 3.6" x 2.7") |
| DXO scores | ||
| DXO All around score | not tested | 72 |
| DXO Color Depth score | not tested | 22.8 |
| DXO Dynamic range score | not tested | 12.5 |
| DXO Low light score | not tested | 811 |
| Other | ||
| Battery life | 260 pictures | 1900 pictures |
| Form of battery | Battery Pack | Battery Pack |
| Battery model | - | 4 x AA |
| Self timer | Yes (2 or 10 secs, 3 photos over 10 secs) | Yes (2 or 12 sec) |
| Time lapse recording | ||
| Storage type | SD/SDHC/SDXC card (UHS-I supported) | SD/SDHC card |
| Card slots | One | One |
| Pricing at launch | $1,000 | $600 |