Panasonic GX1 vs Sony HX99
The Panasonic Lumix DMC-GX1 and the Sony Cyber-shot DSC-HX99 are two digital cameras that were officially introduced, respectively, in November 2011 and August 2018. The GX1 is a mirrorless interchangeable lens camera, while the HX99 is a fixed lens compact. The cameras are based on a Four Thirds (GX1) and a 1/2.3-inch (HX99) sensor. The Panasonic has a resolution of 15.8 megapixels, whereas the Sony provides 18 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DMC-GX1 and the Sony Cyber-shot DSC-HX99? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.
The side-by-side display below illustrates the physical size and weight of the Panasonic GX1 and the Sony HX99. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All size dimensions are rounded to the nearest millimeter.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony HX99 is notably smaller (25 percent) than the Panasonic GX1. In this context, it is worth noting that neither the GX1 nor the HX99 are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the HX99 has a lens built in, whereas the GX1 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the GX1 and their specifications in the Micro Four Thirds Lens Catalog.
Concerning battery life, the GX1 gets 320 shots out of its DMW-BLD10 battery, while the HX99 can take 370 images on a single charge of its NP-BX1 power pack. The power pack in the HX99 can be charged via the USB port, which can be very convenient when travelling.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.
|1.||Panasonic GX1||116 mm||68 mm||39 mm||318 g||320||n||Nov 2011||699|
|2.||Sony HX99||102 mm||58 mm||36 mm||242 g||370||n||Aug 2018||449|
|3.||Canon SX730||110 mm||64 mm||40 mm||300 g||250||n||Apr 2017||399|
|4.||Panasonic G6||122 mm||85 mm||71 mm||390 g||340||n||Apr 2013||599|
|5.||Panasonic GM1||99 mm||55 mm||30 mm||204 g||230||n||Oct 2013||749|
|6.||Panasonic G5||120 mm||83 mm||71 mm||396 g||320||n||Jul 2012||599|
|7.||Panasonic GF5||108 mm||67 mm||37 mm||267 g||360||n||Apr 2012||499|
|8.||Panasonic G3||115 mm||84 mm||47 mm||336 g||270||n||May 2011||599|
|9.||Panasonic GF3||108 mm||67 mm||32 mm||264 g||300||n||Jun 2011||549|
|10.||Panasonic G2||124 mm||84 mm||74 mm||428 g||360||n||Mar 2010||599|
|11.||Panasonic GF2||113 mm||68 mm||33 mm||310 g||300||n||Nov 2010||549|
|12.||Panasonic GH2||124 mm||90 mm||76 mm||442 g||330||n||Sep 2010||899|
|13.||Panasonic GF1||119 mm||71 mm||36 mm||385 g||380||n||Sep 2009||749|
|14.||Sony HX95||102 mm||58 mm||36 mm||242 g||370||n||Aug 2018||429|
|15.||Sony WX800||102 mm||58 mm||36 mm||233 g||370||n||Oct 2018||399|
|16.||Sony HX90V||102 mm||58 mm||36 mm||245 g||360||n||Apr 2015||429|
|17.||Sony HX400V||130 mm||93 mm||103 mm||660 g||300||n||Feb 2014||499|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will naturally be influenced heavily by the price. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The HX99 was launched at a lower price than the GX1, despite having a lens built in. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
The size of the sensor inside a digital camera is one of the key determinants of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Panasonic GX1 features a Four Thirds sensor and the Sony HX99 a 1/2.3-inch sensor. The sensor area in the HX99 is 88 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 5.6. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.
In terms of underlying technology, both cameras are build around CMOS sensors.
Despite having a smaller sensor, the HX99 offers a higher resolution of 18 megapixels, compared with 15.8 MP of the GX1. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 1.25μm versus 3.77μm for the GX1). However, it should be noted that the HX99 is much more recent (by 6 years and 9 months) than the GX1, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that the HX99 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sony HX99 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the HX99 for good quality output (200 dots per inch) amounts to 24.5 x 18.4 inches or 62.2 x 46.6 cm, for very good quality (250 dpi) 19.6 x 14.7 inches or 49.7 x 37.3 cm, and for excellent quality (300 dpi) 16.3 x 12.2 inches or 41.5 x 31.1 cm. The corresponding values for the Panasonic GX1 are 23 x 17.2 inches or 58.3 x 43.8 cm for good quality, 18.4 x 13.8 inches or 46.7 x 35 cm for very good quality, and 15.3 x 11.5 inches or 38.9 x 29.2 cm for excellent quality prints.
The Panasonic Lumix DMC-GX1 has a native sensitivity range from ISO 160 to ISO 12800. The corresponding ISO settings for the Sony Cyber-shot DSC-HX99 are ISO 80 to ISO 3200, with the possibility to increase the ISO range to 80-6400.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|1.||Panasonic GX1||Four Thirds||15.8||4592||3448||1080/60p||20.8||10.6||703||55|
|4.||Panasonic G6||Four Thirds||15.9||4608||3456||1080/60p||21.3||11.5||639||61|
|5.||Panasonic GM1||Four Thirds||15.8||4592||3448||1080/60i||22.3||11.7||660||66|
|6.||Panasonic G5||Four Thirds||15.9||4608||3456||1080/60p||22.3||11.9||643||66|
|7.||Panasonic GF5||Four Thirds||12.0||4000||3000||1080/60i||21.4||11.6||618||61|
|8.||Panasonic G3||Four Thirds||15.8||4592||3448||1080/60i||21.0||10.6||667||56|
|9.||Panasonic GF3||Four Thirds||12.0||4000||3000||1080/60i||20.6||10.0||458||49|
|10.||Panasonic G2||Four Thirds||12.0||4000||3000||720/30p||21.2||10.3||493||53|
|11.||Panasonic GF2||Four Thirds||12.0||4000||3000||1080/60i||21.2||10.3||506||54|
|12.||Panasonic GH2||Four Thirds||15.9||4608||3456||1080/60i||21.2||11.3||655||60|
|13.||Panasonic GF1||Four Thirds||12.0||4000||3000||720/30p||21.2||10.3||513||54|
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the HX99 provides a better video resolution than the GX1. It can shoot movie footage at 4K/30p, while the Panasonic is limited to 1080/60p.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the HX99 has an electronic viewfinder (638k dots), which can be very helpful when shooting in bright sunlight. In contrast, the GX1 relies on live view and the rear LCD for framing. That said, the GX1 can be equipped with an optional viewfinder – the DMW-LVF2. The adjacent table lists some of the other core features of the Panasonic GX1 and Sony HX99 along with similar information for a selection of comparators.
|1.||Panasonic GX1||optional||n||3.0 / 460||fixed||Y||1/4000s||4.2||Y||n|
|2.||Sony HX99||638||n||3.0 / 922||tilting||Y||1/2000s||10.0||Y||Y|
|3.||Canon SX730||none||n||3.0 / 922||tilting||n||1/3200s||5.9||Y||Y|
|4.||Panasonic G6||1440||n||3.0 / 1036||swivel||Y||1/4000s||7.0||Y||n|
|5.||Panasonic GM1||none||n||3.0 / 1036||fixed||Y||1/500s||5.0||Y||n|
|6.||Panasonic G5||1440||n||3.0 / 920||swivel||Y||1/4000s||6.0||Y||n|
|7.||Panasonic GF5||none||n||3.0 / 920||fixed||Y||1/4000s||4.0||Y||n|
|8.||Panasonic G3||1440||n||3.0 / 460||swivel||Y||1/4000s||4.0||Y||n|
|9.||Panasonic GF3||none||n||3.0 / 460||fixed||Y||1/4000s||3.2||Y||n|
|10.||Panasonic G2||1440||n||3.0 / 460||swivel||Y||1/4000s||2.6||Y||n|
|11.||Panasonic GF2||optional||n||3.0 / 460||fixed||Y||1/4000s||2.6||Y||n|
|12.||Panasonic GH2||1534||n||3.0 / 460||swivel||n||1/4000s||3.0||Y||n|
|13.||Panasonic GF1||optional||n||3.0 / 460||fixed||n||1/4000s||3.0||Y||n|
|14.||Sony HX95||638||n||3.0 / 922||tilting||n||1/2000s||10.0||Y||Y|
|15.||Sony WX800||none||n||3.0 / 922||tilting||Y||1/2000s||10.0||Y||Y|
|16.||Sony HX90V||638||n||3.0 / 921||tilting||n||1/2000s||10.0||Y||Y|
|17.||Sony HX400V||210||n||3.0 / 921||tilting||n||1/4000s||10.0||Y||Y|
The GX1 writes its imaging data to SDXC cards, while the HX99 uses SDXC or Memory Stick PRO Duo cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.
For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Panasonic Lumix DMC-GX1 and Sony Cyber-shot DSC-HX99 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Panasonic GX1||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|2.||Sony HX99||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|3.||Canon SX730||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|4.||Panasonic G6||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|5.||Panasonic GM1||-||stereo / mono||-||-||micro||2.0||Y||-||-|
|6.||Panasonic G5||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|7.||Panasonic GF5||-||stereo / mono||-||-||mini||2.0||-||-||-|
|8.||Panasonic G3||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|9.||Panasonic GF3||-||stereo / mono||-||-||mini||2.0||-||-||-|
|10.||Panasonic G2||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|11.||Panasonic GF2||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|12.||Panasonic GH2||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|13.||Panasonic GF1||Y||mono / mono||-||-||mini||2.0||-||-||-|
|14.||Sony HX95||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|15.||Sony WX800||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|16.||Sony HX90V||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|17.||Sony HX400V||Y||stereo / mono||-||-||micro||2.0||Y||Y||-|
It is notable that the GX1 has a hotshoe, while the HX99 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
The HX99 is a recent model that features in the current product line-up of Sony. In contrast, the GX1 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the GX1 was succeeded by the Panasonic GX7. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Panasonic and Sony websites.
So how do things add up? Which of the two cameras – the Panasonic GX1 or the Sony HX99 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.
Arguments in favor of the Panasonic Lumix DMC-GX1:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
- Richer colors: The pixel size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
- Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
- More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- More heavily discounted: Has been available for much longer (launched in November 2011).
Advantages of the Sony Cyber-shot DSC-HX99:
- More detail: Has more megapixels (18 vs 15.8MP), which boosts linear resolution by 7%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
- Easier framing: Has an electronic viewfinder for image composition and settings control.
- More detailed LCD: Has a higher resolution rear screen (922k vs 460k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (10 vs 4.2 flaps/sec) to capture the decisive moment.
- Ready to shoot: Has an integrated lens, whereas the GX1 necessitates an extra lens.
- More compact: Is smaller (102x58mm vs 116x68mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the GX1).
- Longer lasting: Gets more shots (370 versus 320) out of a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More modern: Reflects 6 years and 9 months of technical progress since the GX1 launch.
If the count of relative strengths (bullet points above) is taken as a measure, the HX99 is the clear winner of the contest (19 : 9 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.
How about other alternatives? Do the specifications of the Panasonic GX1 and the Sony HX99 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best Superzoom Camera listings whether the two cameras rank among the cream of the crop.
In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the GX1 or the HX99. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
This is why expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.
|1.||Panasonic GX1||3/5||+||..||77/100||4.5/5||4.5/5||Nov 2011||699|
|2.||Sony HX99||..||..||..||..||4/5||4.5/5||Aug 2018||449|
|3.||Canon SX730||..||+||..||..||4/5||4/5||Apr 2017||399|
|4.||Panasonic G6||4/5||+ +||..||..||5/5||4.5/5||Apr 2013||599|
|5.||Panasonic GM1||3/5||+||..||78/100||5/5||4.5/5||Oct 2013||749|
|6.||Panasonic G5||3/5||+ +||..||..||4.5/5||4.5/5||Jul 2012||599|
|7.||Panasonic GF5||3/5||..||..||..||4.5/5||4.5/5||Apr 2012||499|
|8.||Panasonic G3||3/5||+ +||..||75/100||4.5/5||5/5||May 2011||599|
|9.||Panasonic GF3||3/5||82/100||..||71/100||4.5/5||4/5||Jun 2011||549|
|10.||Panasonic G2||..||..||..||72/100||4/5||4.5/5||Mar 2010||599|
|11.||Panasonic GF2||3/5||82/100||..||70/100||4.5/5||4.5/5||Nov 2010||549|
|12.||Panasonic GH2||5/5||+ +||..||79/100||4.5/5||5/5||Sep 2010||899|
|13.||Panasonic GF1||..||85/100||..||69/100||4.5/5||4.5/5||Sep 2009||749|
|14.||Sony HX95||..||..||..||..||..||..||Aug 2018||429|
|15.||Sony WX800||..||..||..||..||..||..||Oct 2018||399|
|16.||Sony HX90V||4/5||+ +||..||..||4/5||4.5/5||Apr 2015||429|
|17.||Sony HX400V||4/5||+ +||..||..||4/5||4/5||Feb 2014||499|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.
Other camera comparisons
Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 60D vs Panasonic GX1
- Canon G15 vs Sony HX99
- Canon R vs Panasonic GX1
- Fujifilm X-T4 vs Sony HX99
- Nikon B500 vs Panasonic GX1
- Nikon D500 vs Sony HX99
- Nikon P900 vs Panasonic GX1
- Olympus E-PL8 vs Sony HX99
- Olympus XZ-1 vs Sony HX99
- Panasonic FZ330 vs Panasonic GX1
- Panasonic GF7 vs Panasonic GX1
- Sony A7 II vs Sony HX99
Specifications: Panasonic GX1 vs Sony HX99
Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.
|Camera Model||Panasonic GX1||Sony HX99|
|Camera Type||Mirrorless system camera||Fixed lens compact camera|
|Camera Lens||Micro Four Thirds lenses||24-720mm f/3.5-6.4|
|Launch Date||November 2011||August 2018|
|Launch Price||USD 699||USD 449|
|Sensor Specs||Panasonic GX1||Sony HX99|
|Sensor Format||Four Thirds Sensor||1/2.3" Sensor|
|Sensor Size||17.3 x 13.0 mm||6.17 x 4.55 mm|
|Sensor Area||224.9 mm2||28.0735 mm2|
|Sensor Diagonal||21.6 mm||7.7 mm|
|Sensor Resolution||15.8 Megapixels||18 Megapixels|
|Image Resolution||4592 x 3448 pixels||4896 x 3672 pixels|
|Pixel Pitch||3.77 μm||1.25 μm|
|Pixel Density||7.04 MP/cm2||64.04 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/60p Video||4K/30p Video|
|ISO Setting||160 - 12,800 ISO||80 - 3,200 ISO|
|ISO Boost||no Enhancement||80 - 6,400 ISO|
|Image Processor||Venus FHD||BIONZ X|
|DXO Sensor Quality (score)||55||..|
|DXO Color Depth (bits)||20.8||..|
|DXO Dynamic Range (EV)||10.6||..|
|DXO Low Light (ISO)||703||..|
|Screen Specs||Panasonic GX1||Sony HX99|
|Viewfinder Type||Viewfinder optional||Electronic viewfinder|
|Viewfinder Field of View||100%|
|Viewfinder Resolution||638k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||460k dots||922k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Panasonic GX1||Sony HX99|
|Focus System||Contrast-detect AF||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||no Peaking Feature|
|Continuous Shooting||4.2 shutter flaps/s||10 shutter flaps/s|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDXC cards||MS or SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Panasonic GX1||Sony HX99|
|External Flash||Hotshoe||no Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||micro HDMI|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Bluetooth Support||no Bluetooth||Bluetooth built-in|
|Body Specs||Panasonic GX1||Sony HX99|
|Battery Life (CIPA)||320 shots per charge||370 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
116 x 68 x 39 mm
(4.6 x 2.7 x 1.5 in)
102 x 58 x 36 mm
(4.0 x 2.3 x 1.4 in)
|Camera Weight||318 g (11.2 oz)||242 g (8.5 oz)|
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