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Panasonic TZ100 versus Panasonic GX850

The Panasonic Lumix DMC-TZ100 (called Panasonic ZS100 in some regions) and the Panasonic Lumix DMC-GX850 (labelled Panasonic GX800 in some countries) are two digital cameras that were revealed to the public, respectively, in January 2016 and January 2017. The TZ100 is a fixed lens compact, while the GX850 is a mirrorless interchangeable lens camera. The cameras are based on an one-inch (TZ100) and a Four Thirds (GX850) sensor. The TZ100 has a resolution of 20 megapixel, whereas the GX850 provides 15.8 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Panasonic TZ100 vs Panasonic GX850

An illustration of the physical size and weight of the Panasonic TZ100 and the Panasonic GX850 is provided in the side-by-side display below. Three consecutive perspectives from the front, the top, and the back are presented. All width, height and depth dimensions are rounded to the nearest millimeter. You can also use the toggle button to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left side – the TZ100 – represents the basis for the calculations across all the size and weight measures).

Snapsort Panasonic TZ100 vs Panasonic GX850
Compare TZ100 versus GX850 top
Compare TZ100 and GX850 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GX850 is somewhat smaller (4 percent) than the Panasonic TZ100. In this context, it is worth noting that neither the TZ100 nor the GX850 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the TZ100 has a lens build in, whereas the GX850 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can find an overview of optics for the GX850 and their specifications in the Micro Four Thirds Lens Catalog.

Concerning battery life, the TZ100 gets 300 shots out of its DMW-BLG10 battery, while the GX850 can take 210 images on a single charge of its DMW-BLH7 power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Panasonic TZ100» 4.4 in 2.6 in 1.7 in 11.0 oz 300 n Jan 2016 699- i
Panasonic GX850« 4.2 in 2.6 in 1.3 in 9.5 oz 210 n Jan 2017 549 i i
Canon G7 X Mark II« » 4.2 in 2.4 in 1.7 in 11.3 oz 265 n Feb 2016 699 i i
Canon M3« » 4.4 in 2.7 in 1.7 in 12.9 oz 250 n Feb 2015 679- i
Canon G5 X« » 4.4 in 3.0 in 1.7 in 12.5 oz 210 n Oct 2015 799 i i
Canon G7 X« » 4.1 in 2.4 in 1.6 in 10.7 oz 210 n Sep 2014 699- i
Panasonic TZ200« » 4.4 in 2.6 in 1.8 in 12.0 oz 370 n Feb 2018 799 i i
Panasonic LX15« » 4.2 in 2.4 in 1.7 in 10.9 oz 260 n Sep 2016 699 i i
Panasonic G7« » 4.9 in 3.4 in 3.0 in 14.5 oz 350 n May 2015 649- i
Panasonic GF7« » 4.2 in 2.6 in 1.3 in 9.4 oz 230 n Jan 2015 499- i
Panasonic GF6« » 4.4 in 2.6 in 1.5 in 11.4 oz 340 n Apr 2013 499- i
Panasonic G6« » 4.8 in 3.3 in 2.8 in 13.8 oz 340 n Apr 2013 599- i
Panasonic GX1« » 4.6 in 2.7 in 1.5 in 11.2 oz 320 n Nov 2011 949- i
Sony RX100 V« » 4.0 in 2.3 in 1.6 in 10.5 oz 220 n Oct 2016 999 i i
Sony RX100 IV« » 4.0 in 2.3 in 1.6 in 10.5 oz 280 n Jun 2015 999- i
Sony RX100 III« » 4.0 in 2.3 in 1.6 in 10.2 oz 320 n May 2014 799- i
Sony RX100 II« » 4.0 in 2.3 in 1.5 in 9.9 oz 350 n Jun 2013 749- i

The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

 

Sensor comparison: Panasonic TZ100 vs Panasonic GX850

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Panasonic TZ100 features an one-inch sensor and the Panasonic GX850 a Four Thirds sensor. The sensor area in the GX850 is 94 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.75 and 2.0. The sensor in the TZ100 has a native 3:2 aspect ratio, while the one in the GX850 offers a 4:3 aspect.

Panasonic TZ100 and Panasonic GX850 sensor measures

Despite having a smaller sensor, the Panasonic TZ100 offers a higher resolution of 20 megapixel, compared with 15.8 MP of the Panasonic GX850. This megapixel advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 2.41μm versus 3.77μm for the GX850). Moreover, it should be noted that the GX850 is a somewhat more recent model (by 1 year) than the TZ100, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the GX850 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

TZ100 versus GX850 MP

Consistent information on actual sensor performance is available from DXO Mark for most cameras. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar image quality. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Sensor Characteristics
  Camera Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Panasonic TZ100» 1-inch 20.0 5472 36484K/30p22.812.555970
Panasonic GX850« Four Thirds 15.8 4592 34484K/30p23.213.358673
Canon G7 X Mark II« » 1-inch 20.0 5472 36481080/60p----
Canon M3« » APS-C 24.0 6000 40001080/30p22.811.8116972
Canon G5 X« » 1-inch 20.0 5472 36481080/60p----
Canon G7 X« » 1-inch 20.0 5472 36481080/60p23.012.755671
Panasonic TZ200« » 1-inch 20.0 5472 36484K/30p----
Panasonic LX15« » 1-inch 20.0 5472 36484K/30p----
Panasonic G7« » Four Thirds 15.8 4592 34484K/30p----
Panasonic GF7« » Four Thirds 15.8 4592 34481080/60p----
Panasonic GF6« » Four Thirds 15.8 4592 34481080/60i20.710.662254
Panasonic G6« » Four Thirds 15.9 4608 34561080/60p21.311.563961
Panasonic GX1« » Four Thirds 15.8 4592 34481080/60p20.810.670355
Sony RX100 V« » 1-inch 20.0 5472 36484K/30p22.812.458670
Sony RX100 IV« » 1-inch 20.0 5472 36484K/30p22.812.659170
Sony RX100 III« » 1-inch 20.0 5472 36481080/60p22.412.349567
Sony RX100 II« » 1-inch 20.0 5472 36481080/60p22.512.448367

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, and both provide the same movie specifications (4K/30p).

 

Feature comparison: Panasonic TZ100 vs Panasonic GX850

Apart from body and sensor, cameras can and do differ across a range of features. For example, the TZ100 has an electronic viewfinder (1166k dots), which can be very helpful when shooting in bright sunlight. In contrast, the GX850 relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the Panasonic TZ100 and Panasonic GX850 along with similar information for a selection of comparators. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

Core Features
  Camera Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Panasonic TZ100»1166 n 3.0 1040 fixed Y 2000 10.0 Y Y
Panasonic GX850«- n 3.0 1040 tilting Y 500 10.0 Y n
Canon G7 X Mark II« »- n 3.0 1040 tilting Y 2000 8.0 Y Y
Canon M3« »- n 3.0 1040 tilting Y 4000 4.2 Y n
Canon G5 X« »2360 n 3.0 1040 swivel Y 2000 5.9 Y Y
Canon G7 X« »- n 3.0 1040 tilting Y 2000 6.5 Y Y
Panasonic TZ200« »2330 n 3.0 1240 fixed Y 2000 10.0 Y Y
Panasonic LX15« »- n 3.0 1040 tilting Y 4000 10.0 Y Y
Panasonic G7« »2360 n 3.0 1040 swivel Y 4000 7.0 Y n
Panasonic GF7« »- n 3.0 1040 tilting Y 500 5.8 Y n
Panasonic GF6« »- n 3.0 1040 tilting Y 4000 4.2 Y n
Panasonic G6« »1440 n 3.0 1036 swivel Y 4000 7.0 Y n
Panasonic GX1« »- n 3.0 460 fixed Y 4000 4.2 Y n
Sony RX100 V« »2359 n 3.0 1229 tilting n 2000 24.0 Y Y
Sony RX100 IV« »2359 n 3.0 1228 tilting n 2000 16.0 Y Y
Sony RX100 III« »1440 n 3.0 1229 tilting n 2000 10.0 Y Y
Sony RX100 II« »- n 3.0 1229 tilting n 2000 10.0 Y Y

The GX850 is a current model that online retailers, such as amazon, will have in stock. In contrast, the TZ100 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the TZ100 was succeeded by the Panasonic TZ200.

Review summary: Panasonic TZ100 vs Panasonic GX850

So how do things add up? Is there a clear favorite between the Panasonic TZ100 and the Panasonic GX850? Below is a summary of the relative strengths of each of the two contestants.


Arguments in favor of the Panasonic Lumix DMC-TZ100:

  • More detail: Offers more megapixels (20 vs 15.8MP) with a 15% higher linear resolution.
  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Easier framing: Has an electronic viewfinder for image framing and settings control.
  • Faster shutter: Has higher mechanical shutter speed (2000/sec vs 500/sec) to freeze action.
  • Ready to shoot: Has a lens build-in, whereas the GX850 requires a separate lens.
  • Longer lasting: Can take more shots (300 versus 210) on a single battery charge.
  • Sharper images: Has hand-shake reducing image stabilization build-in.
  • More heavily discounted: Has been on the market for longer (launched in January 2016).


Advantages of the Panasonic Lumix DMC-GX850:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • More dynamic range: Captures a broader range of light and dark details (0.8 EV of extra DR).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
  • More modern: Was introduced somewhat (1 year) more recently.

If the count of individual advantages (bullet points above) is taken as a guide, the TZ100 emerges as the winner of the contest (8 : 5 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.

TZ100 08:05 GX850

In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the TZ100 or the GX850 handle or perform in practice. 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 hands-on reviews by experts are important. The following table reports the overall rankings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The full reviews are available by clicking on the site logo in the table header.

Review scores
  Camera cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Panasonic TZ100»HiRec82/1004.5/54/54.5/5 Jan 2016 699- i
Panasonic GX850«Rec76/1004.5/54/54.5/5 Jan 2017 549 i i
Canon G7 X Mark II« »HiRec81/1004.5/54/54.5/5 Feb 2016 699 i i
Canon M3« »rev75/1004.5/54.5/54/5 Feb 2015 679- i
Canon G5 X« »HiRec78/1004.5/54/54.5/5 Oct 2015 799 i i
Canon G7 X« »HiRec77/1004.5/53.5/54.5/5 Sep 2014 699- i
Panasonic TZ200« »HiRec81/1004.5/5-4.5/5 Feb 2018 799 i i
Panasonic LX15« »HiRec81/1004/54.5/54.5/5 Sep 2016 699 i i
Panasonic G7« »HiRec80/1005/54.5/54.5/5 May 2015 649- i
Panasonic GF7« »Rec-4.5/54.5/54.5/5 Jan 2015 499- i
Panasonic GF6« »HiRec-4.5/5-4.5/5 Apr 2013 499- i
Panasonic G6« »HiRec-5/5-4.5/5 Apr 2013 599- i
Panasonic GX1« »Rec77/1004.5/54.5/54.5/5 Nov 2011 949- i
Sony RX100 V« »HiRec83/1004/55/54.5/5 Oct 2016 999 i i
Sony RX100 IV« »HiRec85/1004/54.5/54.5/5 Jun 2015 999- i
Sony RX100 III« »HiRec82/1004.5/54.5/55/5 May 2014 799- i
Sony RX100 II« »HiRec79/1004.5/55/54.5/5 Jun 2013 749- i

Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

 

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. If you do not see the camera that you are looking for, please send me an email, and I will try to update the database with the necessary infos.

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