Panasonic GX1 vs TZ90
The Panasonic Lumix DMC-GX1 and the Panasonic Lumix DC-TZ90 (labelled Panasonic ZS70 in some countries) are two digital cameras that were officially introduced, respectively, in November 2011 and April 2017. The GX1 is a mirrorless interchangeable lens camera, while the TZ90 is a fixed lens compact. The cameras are based on a Four Thirds (GX1) and a 1/2.3-inch (TZ90) sensor. The GX1 has a resolution of 15.8 megapixels, whereas the TZ90 provides 20.2 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Panasonic GX1||Panasonic TZ90|
|Mirrorless system camera||Fixed lens compact camera|
|Micro Four Thirds lenses||24-720mm f/3.3-6.4|
|15.8 MP, Four Thirds Sensor||20.2 MP, 1/2.3" Sensor|
|1080/60p Video||4K/30p Video|
|ISO 160-12,800||ISO 80-3,200 (80 - 6,400)|
|Viewfinder optional||Electronic viewfinder (1166k dots)|
|3.0 LCD, 460k dots||3.0 LCD, 1040k dots|
|Fixed touchscreen||Tilting touchscreen|
|4.2 shutter flaps per second||10 shutter flaps per second|
|320 shots per battery charge||380 shots per battery charge|
|116 x 68 x 39 mm, 318 g||112 x 67 x 41 mm, 322 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DMC-GX1 and the Panasonic Lumix DC-TZ90? 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 Panasonic TZ90. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter.
The TZ90 can be obtained in two different colors (black, silver), while the GX1 is only available in black.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic TZ90 is somewhat smaller (5 percent) than the Panasonic GX1. In this context, it is worth noting that neither the GX1 nor the TZ90 are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the TZ90 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 TZ90 can take 380 images on a single charge of its DMW-BLG10 power pack. The power pack in the TZ90 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. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.
|Panasonic GX1||4.6 in||2.7 in||1.5 in||11.2 oz||320||n||Nov 2011||699|
|Panasonic TZ90||4.4 in||2.6 in||1.6 in||11.4 oz||380||n||Apr 2017||449|
|Canon SX730||4.3 in||2.5 in||1.6 in||10.6 oz||250||n||Apr 2017||399|
|Fujifilm XF10||4.4 in||2.5 in||1.6 in||9.8 oz||330||n||Jul 2018||499|
|Panasonic TZ95||4.4 in||2.7 in||1.7 in||11.5 oz||380||n||Feb 2019||449|
|Panasonic FT7||4.6 in||3.0 in||1.5 in||11.3 oz||300||Y||May 2018||449|
|Panasonic G6||4.8 in||3.3 in||2.8 in||13.8 oz||340||n||Apr 2013||599|
|Panasonic GM1||3.9 in||2.2 in||1.2 in||7.2 oz||230||n||Oct 2013||749|
|Panasonic G5||4.7 in||3.3 in||2.8 in||14.0 oz||320||n||Jul 2012||599|
|Panasonic GF5||4.3 in||2.6 in||1.5 in||9.4 oz||360||n||Apr 2012||499|
|Panasonic G3||4.5 in||3.3 in||1.9 in||11.9 oz||270||n||May 2011||599|
|Panasonic GF3||4.3 in||2.6 in||1.3 in||9.3 oz||300||n||Jun 2011||549|
|Panasonic G2||4.9 in||3.3 in||2.9 in||15.1 oz||360||n||Mar 2010||599|
|Panasonic GF2||4.4 in||2.7 in||1.3 in||10.9 oz||300||n||Nov 2010||549|
|Panasonic GH2||4.9 in||3.5 in||3.0 in||15.6 oz||330||n||Sep 2010||899|
|Panasonic LX5||4.3 in||2.6 in||1.7 in||9.6 oz||400||n||Jul 2010||499|
|Panasonic GF1||4.7 in||2.8 in||1.4 in||13.6 oz||380||n||Sep 2009||749|
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.
The price is, of course, an important factor in any camera decision. 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 TZ90 was launched at a lower price than the GX1, despite having a lens built in. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. 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.
The size of the imaging sensor is a crucial determinant 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. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its 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 Panasonic TZ90 a 1/2.3-inch sensor. The sensor area in the TZ90 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.
Despite having a smaller sensor, the TZ90 offers a higher resolution of 20.2 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 1.18μm versus 3.77μm for the GX1). However, it should be noted that the TZ90 is much more recent (by 5 years and 5 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 TZ90 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Panasonic TZ90 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the TZ90 for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 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 Panasonic Lumix DC-TZ90 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 is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). Of the two cameras under review, the GX1 provides substantially higher image quality than the TZ90, with an overall score that is 19 points higher. This advantage is based on 1.7 bits higher color depth, and 2.7 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|Panasonic GX1||Four Thirds||15.8||4592||3448||1080/60p||20.8||10.6||703||55|
|Panasonic G6||Four Thirds||15.9||4608||3456||1080/60p||21.3||11.5||639||61|
|Panasonic GM1||Four Thirds||15.8||4592||3448||1080/60i||22.3||11.7||660||66|
|Panasonic G5||Four Thirds||15.9||4608||3456||1080/60p||..||..||..||..|
|Panasonic GF5||Four Thirds||12.0||4000||3000||1080/60i||21.4||11.6||618||61|
|Panasonic G3||Four Thirds||15.8||4592||3448||1080/60i||21.0||10.6||667||56|
|Panasonic GF3||Four Thirds||12.0||4000||3000||1080/60i||20.6||10.0||458||49|
|Panasonic G2||Four Thirds||12.0||4000||3000||720/30p||21.2||10.3||493||53|
|Panasonic GF2||Four Thirds||12.0||4000||3000||1080/60i||21.2||10.3||506||54|
|Panasonic GH2||Four Thirds||15.9||4608||3456||1080/60i||21.2||11.3||655||60|
|Panasonic GF1||Four Thirds||12.0||4000||3000||720/30p||21.2||10.3||513||54|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the TZ90 provides a better video resolution than the GX1. It can shoot movie footage at 4K/30p, while the GX1 is limited to 1080/60p.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the TZ90 has an electronic viewfinder (1166k 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 following table reports on some other key feature differences and similarities of the Panasonic GX1, the Panasonic TZ90, and comparable cameras.
The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the TZ90 is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).
Concerning the storage of imaging data, both the GX1 and the TZ90 write their files to SDXC 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 Panasonic Lumix DC-TZ90 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
It is notable that the GX1 has a hotshoe, while the TZ90 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
Both the GX1 and the TZ90 have been discontinued, but can regularly be found used on eBay. The GX1 was replaced by the Panasonic GX7, while the TZ90 was followed by the Panasonic TZ95. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Panasonic website.
So what conclusions can be drawn? Is there a clear favorite between the Panasonic GX1 and the Panasonic TZ90? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.
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: Scores substantially higher (19 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (1.7 bits more color depth).
- Better low-light sensitivity: Requires less light for good images (2.7 stops ISO advantage).
- 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 Panasonic Lumix DC-TZ90:
- More detail: Has more megapixels (20.2 vs 15.8MP), which boosts linear resolution by 13%.
- 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 (1040k 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.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Ready to shoot: Has an integrated lens, whereas the GX1 necessitates an extra lens.
- Longer lasting: Gets more shots (380 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.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More modern: Reflects 5 years and 5 months of technical progress since the GX1 launch.
If the count of individual advantages (bullet points above) is taken as a guide, the TZ90 is the clear winner of the contest (15 : 8 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision 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 Panasonic TZ90 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 technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the GX1 or the TZ90 perform in practice. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.
This is why hands-on reviews by experts are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
|Panasonic GX1||+||77/100||4.5/5||4.5/5||4.5/5||Nov 2011||699|
|Panasonic TZ90||+ +||..||4/5||..||4/5||Apr 2017||449|
|Canon SX730||+||..||4/5||..||4/5||Apr 2017||399|
|Fujifilm XF10||..||75/100||4/5||..||4.5/5||Jul 2018||499|
|Panasonic TZ95||+ +||..||4.5/5||..||..||Feb 2019||449|
|Panasonic FT7||+||..||3.5/5||..||3.5/5||May 2018||449|
|Panasonic G6||+ +||..||5/5||..||4.5/5||Apr 2013||599|
|Panasonic GM1||+||78/100||5/5||4.5/5||4.5/5||Oct 2013||749|
|Panasonic G5||+ +||..||4.5/5||4.5/5||4.5/5||Jul 2012||599|
|Panasonic GF5||..||..||4.5/5||4/5||4.5/5||Apr 2012||499|
|Panasonic G3||+ +||75/100||4.5/5||4.5/5||5/5||May 2011||599|
|Panasonic GF3||82/100||71/100||4.5/5||4.5/5||4/5||Jun 2011||549|
|Panasonic G2||..||72/100||4/5||4/5||4.5/5||Mar 2010||599|
|Panasonic GF2||82/100||70/100||4.5/5||4.5/5||4.5/5||Nov 2010||549|
|Panasonic GH2||+ +||79/100||4.5/5||4.5/5||5/5||Sep 2010||899|
|Panasonic LX5||+||73/100||4.5/5||5/5||4.5/5||Jul 2010||499|
|Panasonic GF1||85/100||69/100||4.5/5||4.5/5||4.5/5||Sep 2009||749|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
Other camera comparisons
Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 20D vs Panasonic GX1
- Canon 600D vs Panasonic GX1
- Canon 6D Mark II vs Panasonic GX1
- Leica V-LUX 1 vs Panasonic TZ90
- Nikon D5300 vs Panasonic TZ90
- Nikon D5600 vs Panasonic TZ90
- Nikon D7100 vs Panasonic GX1
- Panasonic GX1 vs Panasonic LX7
- Panasonic GX1 vs Sony NEX-5T
- Panasonic GX1 vs Sony RX1
- Panasonic GX7 vs Panasonic TZ90
- Panasonic TZ90 vs Ricoh GR II
Specifications: Panasonic GX1 vs Panasonic TZ90
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||Panasonic TZ90|
|Camera Type||Mirrorless system camera||Fixed lens compact camera|
|Camera Lens||Micro Four Thirds lenses||24-720mm f/3.3-6.4|
|Launch Date||November 2011||April 2017|
|Launch Price||USD 699||USD 449|
|Sensor Specs||Panasonic GX1||Panasonic TZ90|
|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||20.2 Megapixels|
|Image Resolution||4592 x 3448 pixels||5184 x 3888 pixels|
|Pixel Pitch||3.77 μm||1.18 μm|
|Pixel Density||7.04 MP/cm2||71.80 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||Venus|
|DXO Sensor Quality (score)||55||36|
|DXO Color Depth (bits)||20.8||19.1|
|DXO Dynamic Range (EV)||10.6||10.6|
|DXO Low Light (ISO)||703||106|
|Screen Specs||Panasonic GX1||Panasonic TZ90|
|Viewfinder Type||Viewfinder optional||Electronic viewfinder|
|Viewfinder Field of View||100%|
|Viewfinder Resolution||1166k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||460k dots||1040k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Panasonic GX1||Panasonic TZ90|
|Focus System||Contrast-detect AF||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/2000s|
|Continuous Shooting||4.2 shutter flaps/s||10 shutter flaps/s|
|Electronic Shutter||no E-Shutter||up to 1/16000s|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Panasonic GX1||Panasonic TZ90|
|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|
|Body Specs||Panasonic GX1||Panasonic TZ90|
|Battery Life (CIPA)||320 shots per charge||380 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)
112 x 67 x 41 mm
(4.4 x 2.6 x 1.6 in)
|Camera Weight||318 g (11.2 oz)||322 g (11.4 oz)|
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