Panasonic FZ100 vs GX9

The Panasonic Lumix DMC-FZ100 and the Panasonic Lumix DC-GX9 are two digital cameras that were officially introduced, respectively, in July 2010 and February 2018. The FZ100 is a fixed lens compact, while the GX9 is a mirrorless interchangeable lens camera. The cameras are based on a 1/2.3-inch (FZ100) and a Four Thirds (GX9) sensor. The FZ100 has a resolution of 14 megapixels, whereas the GX9 provides 20.2 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications

Panasonic FZ100		Panasonic GX9
Fixed lens compact camera		Mirrorless system camera
25-600mm f/2.8-5.2		Micro Four Thirds lenses
14 MP, 1/2.3" Sensor		20.2 MP, Four Thirds Sensor
1080/60i Video		4K/30p Video
ISO 100-1600 (100-6400)		ISO 200-25600
Electronic viewfinder (202k dots)		Electronic viewfinder (2760k dots)
3.0" LCD, 460k dots		3.0" LCD, 1240k dots
Swivel screen (not touch-sensitive)		Tilting touchscreen
11 shutter flaps per second		9 shutter flaps per second
Lens-based stabilization		In-body stabilization
410 shots per battery charge		260 shots per battery charge
124 x 82 x 92 mm, 540 g		124 x 72 x 47 mm, 407 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DMC-FZ100 and the Panasonic Lumix DC-GX9? 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.

Body comparison

The side-by-side display below illustrates the physical size and weight of the Panasonic FZ100 and the Panasonic GX9. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All size dimensions are rounded to the nearest millimeter.

The GX9 can be obtained in two different colors (black, silver), while the FZ100 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 GX9 is notably smaller (12 percent) than the Panasonic FZ100. In this context, it is worth noting that neither the FZ100 nor the GX9 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the FZ100 has a lens built in, whereas the GX9 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 GX9 and their specifications in the Micro Four Thirds Lens Catalog.

Concerning battery life, the FZ100 gets 410 shots out of its DMW-BMB9 battery, while the GX9 can take 260 images on a single charge of its DMW-BLG10 power pack. The power pack in the GX9 can be charged via the USB port, which can be very convenient when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.

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)	Camera Model
	Panasonic FZ100»	4.9 in	3.2 in	3.6 in	19.0 oz	410	n	Jul 2010	499	-		Panasonic FZ100
	Panasonic GX9«	4.9 in	2.8 in	1.9 in	14.4 oz	260	n	Feb 2018	849			Panasonic GX9
	Canon SX530« »	4.7 in	3.2 in	3.6 in	15.6 oz	210	n	Jan 2015	429	-		Canon SX530
	Canon SX60« »	5.0 in	3.7 in	4.5 in	22.9 oz	340	n	Sep 2014	549	-		Canon SX60
	Canon SX50« »	4.8 in	3.4 in	4.2 in	21.0 oz	315	n	Sep 2012	429	-		Canon SX50
	Fujifilm X10« »	4.6 in	2.8 in	2.2 in	12.3 oz	270	n	Sep 2011	599	-		Fujifilm X10
	Leica V-LUX 3« »	4.9 in	3.2 in	3.7 in	19.0 oz	410	n	Dec 2011	949	-		Leica V-LUX 3
	Leica V-LUX 2« »	4.9 in	3.1 in	3.7 in	18.3 oz	410	n	Sep 2010	849	-		Leica V-LUX 2
	Olympus E-M10 II« »	4.7 in	3.3 in	1.9 in	13.8 oz	320	n	Aug 2015	649	-		Olympus E-M10 II
	Panasonic G95« »	5.1 in	3.7 in	3.0 in	18.9 oz	290	Y	Apr 2019	999			Panasonic G95
	Panasonic LX100 II« »	4.5 in	2.6 in	2.6 in	13.8 oz	300	n	Aug 2018	999			Panasonic LX100 II
	Panasonic ZS200« »	4.4 in	2.6 in	1.8 in	12.0 oz	370	n	Feb 2018	799			Panasonic ZS200
	Panasonic GX8« »	5.2 in	3.1 in	2.5 in	17.2 oz	330	Y	Jul 2015	1,199	-		Panasonic GX8
	Panasonic FZ200« »	4.9 in	3.4 in	4.3 in	20.7 oz	540	n	Jul 2012	599	-		Panasonic FZ200
	Panasonic FZ150« »	4.9 in	3.2 in	3.6 in	18.6 oz	410	n	Aug 2011	499	-		Panasonic FZ150
	Panasonic G3« »	4.5 in	3.3 in	1.9 in	11.9 oz	270	n	May 2011	599	-		Panasonic G3
	Panasonic G10« »	4.9 in	3.3 in	2.9 in	13.7 oz	380	n	Mar 2010	499	-		Panasonic G10
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Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The FZ100 was launched at a lower price than the GX9, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to 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 FZ100 features a 1/2.3-inch sensor and the Panasonic GX9 a Four Thirds sensor. The sensor area in the GX9 is 704 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 2.0. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

With 20.2MP, the GX9 offers a higher resolution than the FZ100 (14MP), but the GX9 nevertheless has larger individual pixels (pixel pitch of 3.34μm versus 1.41μm for the FZ100) due to its larger sensor. Moreover, the GX9 is a much more recent model (by 7 years and 6 months) than the FZ100, and its sensor will 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 neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

The resolution advantage of the Panasonic GX9 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GX9 for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inch or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inch or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inch or 43.9 x 32.9 cm. The corresponding values for the Panasonic FZ100 are 21.6 x 16.2 inch or 54.9 x 41.1 cm for good quality, 17.3 x 13 inch or 43.9 x 32.9 cm for very good quality, and 14.4 x 10.8 inch or 36.6 x 27.4 cm for excellent quality prints.

The Panasonic Lumix DMC-FZ100 has a native sensitivity range from ISO 100 to ISO 1600, which can be extended to ISO 100-6400. The corresponding ISO settings for the Panasonic Lumix DC-GX9 are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.

For many cameras, data on sensor performance has been reported by DXO Mark. 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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the GX9 provides a better video resolution than the FZ100. It can shoot movie footage at 4K/30p, while the FZ100 is limited to 1080/60i.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the GX9 offers a substantially higher resolution than the one in the FZ100 (2760k vs 202k dots). The adjacent table lists some of the other core features of the Panasonic FZ100 and Panasonic GX9 along with similar information for a selection of comparators.

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The GX9 has a touchscreen, while the FZ100 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

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 GX9 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).

The Panasonic GX9 has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.

Concerning the storage of imaging data, both the FZ100 and the GX9 write their files to SDXC cards. The GX9 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the FZ100 cannot take advantage of Ultra High Speed SD cards.

Connectivity comparison

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-FZ100 and Panasonic Lumix DC-GX9 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

It is notable that the GX9 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the FZ100 does not offer wifi capability.

The GX9 is a recent model that features in the current product line-up of Panasonic. In contrast, the FZ100 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the FZ100 was succeeded by the Panasonic FZ150. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Panasonic website.

Review summary

So how do things add up? Is there a clear favorite between the Panasonic FZ100 and the Panasonic GX9? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

Advantages of the Panasonic Lumix DMC-FZ100:

• More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• Faster burst: Shoots at higher frequency (11 vs 9 flaps/sec) to capture the decisive moment.
• Ready to shoot: Has a lens built-in, whereas the GX9 requires a separate lens.
• Longer lasting: Can take more shots (410 versus 260) on a single battery charge.
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More heavily discounted: Has been available for much longer (launched in July 2010).

Arguments in favor of the Panasonic Lumix DC-GX9:

• More detail: Has more megapixels (20.2 vs 14MP), which boosts linear resolution by 20%.
• Better image quality: Is equipped with a larger and more technologically advanced sensor.
• Richer colors: The sensor size advantage translates into images with better, more accurate colors.
• More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
• Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
• Better video: Provides higher definition movie capture (4K/30p vs 1080/60i).
• More detailed viewfinder: Has higher resolution electronic viewfinder (2760k vs 202k dots).
• More detailed LCD: Has a higher resolution rear screen (1240k vs 460k dots).
• Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
• Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
• Less disturbing: Has an electronic shutter option for completely silent shooting.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
• More compact: Is smaller (124x72mm vs 124x82mm) and will fit more readily into a bag.
• Easier travel charging: Can be conveniently charged via its USB port.
• Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
• Easier wireless transfer: Supports Bluetooth for image sharing without cables.
• Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
• More modern: Reflects 7 years and 6 months of technical progress since the FZ100 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the GX9 is the clear winner of the contest (18 : 7 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports 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 FZ100 and the Panasonic GX9 place the cameras among the top in their class? Find out in the latest Best Superzoom Camera and Best Mirrorless Interchangeable Lens 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 FZ100 or the GX9. 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.

Expert reviews

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.

Review Scores

	Camera Model						Camera Launch (announced)	Launch Price (USD)	Street Price (USD)	Used Price (USD)	Camera Model
	Panasonic FZ100»	+	-	4.5/5	-	4.5/5	Jul 2010	499	-		Panasonic FZ100
	Panasonic GX9«	+	84/100	4.5/5	4.5/5	4.5/5	Feb 2018	849			Panasonic GX9
	Canon SX530« »	+ +	-	4/5	-	4/5	Jan 2015	429	-		Canon SX530
	Canon SX60« »	+ +	75/100	4/5	-	4.5/5	Sep 2014	549	-		Canon SX60
	Canon SX50« »	+ +	72/100	4.5/5	-	4.5/5	Sep 2012	429	-		Canon SX50
	Fujifilm X10« »	-	76/100	4/5	3.5/5	4.5/5	Sep 2011	599	-		Fujifilm X10
	Leica V-LUX 3« »	-	-	-	-	-	Dec 2011	949	-		Leica V-LUX 3
	Leica V-LUX 2« »	-	-	-	-	-	Sep 2010	849	-		Leica V-LUX 2
	Olympus E-M10 II« »	+ +	80/100	5/5	5/5	5/5	Aug 2015	649	-		Olympus E-M10 II
	Panasonic G95« »	+	83/100	4.5/5	-	4.5/5	Apr 2019	999			Panasonic G95
	Panasonic LX100 II« »	+	82/100	4.5/5	-	4.5/5	Aug 2018	999			Panasonic LX100 II
	Panasonic ZS200« »	+ +	81/100	4.5/5	-	4.5/5	Feb 2018	799			Panasonic ZS200
	Panasonic GX8« »	+	82/100	4.5/5	5/5	4.5/5	Jul 2015	1,199	-		Panasonic GX8
	Panasonic FZ200« »	+ +	80/100	4.5/5	4.5/5	4.5/5	Jul 2012	599	-		Panasonic FZ200
	Panasonic FZ150« »	+ +	76/100	4/5	5/5	4.5/5	Aug 2011	499	-		Panasonic FZ150
	Panasonic G3« »	+ +	75/100	4.5/5	4.5/5	5/5	May 2011	599	-		Panasonic G3
	Panasonic G10« »	-	70/100	4/5	-	4/5	Mar 2010	499	-		Panasonic G10
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Hence, a score should always be seen in the context of the camera's market launch date and its price, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

Specifications: Panasonic FZ100 vs Panasonic GX9

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.

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