Panasonic FZ100 vs GX8

The Panasonic Lumix DMC-FZ100 and the Panasonic Lumix DMC-GX8 are two digital cameras that were officially introduced, respectively, in July 2010 and July 2015. The FZ100 is a fixed lens compact, while the GX8 is a mirrorless interchangeable lens camera. The cameras are based on a 1/2.3-inch (FZ100) and a Four Thirds (GX8) sensor. The FZ100 has a resolution of 14 megapixels, whereas the GX8 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 GX8
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 100-1,600 (100 - 6,400)		ISO 200-25,600
Electronic viewfinder (202k dots)		Electronic viewfinder (2360k dots)
3.0" LCD – 460k dots		3.0" LCD – 1040k dots
Swivel screen (not touch-sensitive)		Swivel touchscreen
11 shutter flaps per second		10 shutter flaps per second
Lens-based stabilization		In-body stabilization
not weather sealed		Weathersealed body
410 shots per battery charge		330 shots per battery charge
124 x 82 x 92 mm, 540 g		133 x 78 x 63 mm, 487 g

Check FZ100 offers at
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Check GX8 offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DMC-FZ100 and the Panasonic Lumix DMC-GX8? 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 physical size and weight of the Panasonic FZ100 and the Panasonic GX8 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth dimensions are rounded to the nearest millimeter.

The GX8 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 GX8 is somewhat larger (2 percent) than the Panasonic FZ100. It is noteworthy in this context that the GX8 is splash and dust-proof, while the FZ100 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the FZ100 has a lens built in, whereas the GX8 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 GX8 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 GX8 can take 330 images on a single charge of its DMW-BLC12 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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.

Body Specifications

		Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life	Weather Sealing	Camera Launch	Launch Price (USD)	Street Price
1.		Panasonic FZ100	124 mm	82 mm	92 mm	540 g	410	n	Jul 2010	499	ebay.com
2.		Panasonic GX8	133 mm	78 mm	63 mm	487 g	330	Y	Jul 2015	1,199	ebay.com
3.		Canon SX530	120 mm	82 mm	92 mm	442 g	210	n	Jan 2015	429	ebay.com
4.		Canon SX60	128 mm	93 mm	114 mm	650 g	340	n	Sep 2014	549	ebay.com
5.		Canon SX50	123 mm	87 mm	106 mm	595 g	315	n	Sep 2012	429	ebay.com
6.		Canon SX40	123 mm	92 mm	108 mm	600 g	380	n	Sep 2011	429	ebay.com
7.		Canon SX30	123 mm	92 mm	108 mm	601 g	370	n	Sep 2010	429	ebay.com
8.		Canon SX20	123 mm	88 mm	87 mm	600 g	..	n	Aug 2009	399	ebay.com
9.		Leica V-LUX 3	124 mm	81 mm	95 mm	540 g	410	n	Dec 2011	949	ebay.com
10.		Leica V-LUX 2	124 mm	80 mm	95 mm	520 g	410	n	Sep 2010	849	ebay.com
11.		Olympus E-M5 II	124 mm	85 mm	45 mm	469 g	310	Y	Feb 2015	1,099	ebay.com
12.		Olympus E-M1	130 mm	94 mm	63 mm	497 g	350	Y	Sep 2013	1,399	ebay.com
13.		Panasonic G95	130 mm	94 mm	77 mm	536 g	290	Y	Apr 2019	999	amazon.com
14.		Panasonic GX9	124 mm	72 mm	47 mm	407 g	260	n	Feb 2018	849	ebay.com
15.		Panasonic GX7	123 mm	71 mm	55 mm	402 g	350	n	Aug 2013	999	ebay.com
16.		Panasonic FZ200	125 mm	87 mm	110 mm	588 g	540	n	Jul 2012	599	ebay.com
17.		Panasonic FZ150	124 mm	82 mm	92 mm	528 g	410	n	Aug 2011	499	ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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Any camera decision will obviously take relative prices into account. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The FZ100 was launched at a lower price than the GX8, 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.

Sensor comparison

The size of the imaging sensor is a crucial determinant of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have 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 FZ100 features a 1/2.3-inch sensor and the Panasonic GX8 a Four Thirds sensor. The sensor area in the GX8 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 GX8 offers a higher resolution than the FZ100 (14MP), but the GX8 nevertheless has larger individual pixels (pixel pitch of 3.34μm versus 1.41μm for the FZ100) due to its larger sensor. Moreover, the GX8 is a much more recent model (by 4 years and 11 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 the FZ100 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Panasonic GX8 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GX8 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 FZ100 are 21.6 x 16.2 inches or 54.9 x 41.1 cm for good quality, 17.3 x 13 inches or 43.9 x 32.9 cm for very good quality, and 14.4 x 10.8 inches 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 DMC-GX8 are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

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"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Panasonic FZ100	1/2.3	14.0	4320	3240	1080/60i	19.4	10.7	306	39
2.		Panasonic GX8	Four Thirds	20.2	5184	3888	4K/30p	23.5	12.6	806	75
3.		Canon SX530	1/2.3	15.9	4608	3456	1080/30p	20.2	11.6	712	47
4.		Canon SX60	1/2.3	14.2	4608	3072	1080/60p	19.2	10.8	127	39
5.		Canon SX50	1/2.3	12.0	4000	3000	1080/24p	20.3	11.2	179	47
6.		Canon SX40	1/2.3	12.0	4000	3000	1080/24p	19.6	10.9	409	41
7.		Canon SX30	1/2.3	14.0	4320	3240	720/30p	19.4	10.7	320	39
8.		Canon SX20	1/2.3	12.0	4000	3000	720/30p	19.2	10.5	225	37
9.		Leica V-LUX 3	1/2.3	12.0	4000	3000	1080/60p	19.7	11.0	430	42
10.		Leica V-LUX 2	1/2.3	14.0	4320	3240	1080/60i	19.4	10.7	321	39
11.		Olympus E-M5 II	Four Thirds	15.9	4608	3456	1080/60p	23.0	12.5	842	73
12.		Olympus E-M1	Four Thirds	15.9	4608	3456	1080/30p	23.0	12.7	757	73
13.		Panasonic G95	Four Thirds	20.2	5184	3888	4K/30p	23.2	13.0	1273	75
14.		Panasonic GX9	Four Thirds	20.2	5184	3888	4K/30p	23.1	12.8	1163	74
15.		Panasonic GX7	Four Thirds	15.8	4592	3448	1080/60p	22.6	12.2	718	70
16.		Panasonic FZ200	1/2.3	12.0	4000	3000	1080/60p	19.1	10.8	114	37
17.		Panasonic FZ150	1/2.3	12.0	4000	3000	1080/60p	19.4	10.9	132	40
Note: DXO values in italics represent estimates based on sensor size and age.

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 GX8 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 variety of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the GX8 offers a substantially higher resolution than the one in the FZ100 (2360k vs 202k dots). The adjacent table lists some of the other core features of the Panasonic FZ100 and Panasonic GX8 along with similar information for a selection of comparators.

Core Features

		Camera Model	Viewfinder (Type or 000 dots)	Control Panel (yes/no)	LCD Specifications (inch/000 dots)	LCD Attach- ment	Touch Screen (yes/no)	Max Shutter Speed *	Max Shutter Flaps *	Built-in Flash (yes/no)	Built-in Image Stab
1.		Panasonic FZ100	202	n	3.0 / 460	swivel	n	1/2000s	11.0/s	Y	Y
2.		Panasonic GX8	2360	n	3.0 / 1040	swivel	Y	1/8000s	10.0/s	n	Y
3.		Canon SX530	none	n	3.0 / 461	fixed	n	1/2000s	1.6/s	Y	Y
4.		Canon SX60	922	n	3.0 / 922	swivel	n	1/2000s	6.4/s	Y	Y
5.		Canon SX50	202	n	3.0 / 461	swivel	n	1/2000s	2.2/s	Y	Y
6.		Canon SX40	202	n	2.7 / 230	swivel	n	1/3200s	10.3/s	Y	Y
7.		Canon SX30	202	n	2.7 / 230	swivel	n	1/3200s	0.6/s	Y	Y
8.		Canon SX20	202	n	2.5 / 230	swivel	n	1/3200s	0.7/s	Y	Y
9.		Leica V-LUX 3	202	n	3.0 / 460	swivel	n	1/2000s	12.0/s	Y	Y
10.		Leica V-LUX 2	202	n	3.0 / 460	swivel	n	1/2000s	11.0/s	Y	Y
11.		Olympus E-M5 II	2360	n	3.0 / 1037	swivel	Y	1/8000s	10.0/s	n	Y
12.		Olympus E-M1	2360	n	3.0 / 1037	tilting	Y	1/8000s	10.0/s	n	Y
13.		Panasonic G95	2360	n	3.0 / 1240	swivel	Y	1/4000s	9.0/s	Y	Y
14.		Panasonic GX9	2760	n	3.0 / 1240	tilting	Y	1/4000s	9.0/s	Y	Y
15.		Panasonic GX7	2760	n	3.0 / 1040	tilting	Y	1/8000s	5.0/s	Y	Y
16.		Panasonic FZ200	1312	n	3.0 / 460	swivel	n	1/4000s	12.0/s	Y	Y
17.		Panasonic FZ150	202	n	3.0 / 460	swivel	n	1/2000s	12.0/s	Y	Y
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The FZ100 has one, while the GX8 does not. While the built-in flash of the FZ100 is not very powerful, it can at times be useful as a fill-in light.

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 GX8 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 GX8 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 GX8 write their files to SDXC cards. The GX8 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 DMC-GX8 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections

		Camera Model	Hotshoe Port	Internal Mic / Speaker	Microphone Port	Headphone Port	HDMI Port	USB Port	WiFi Support	NFC Support	Bluetooth Support
1.		Panasonic FZ100	Y	stereo / mono	-	-	mini	2.0	-	-	-
2.		Panasonic GX8	Y	stereo / mono	Y	-	micro	2.0	Y	Y	-
3.		Canon SX530	-	stereo / mono	-	-	mini	2.0	Y	Y	-
4.		Canon SX60	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
5.		Canon SX50	Y	stereo / mono	-	-	mini	2.0	-	-	-
6.		Canon SX40	Y	stereo / mono	-	-	YES	2.0	-	-	-
7.		Canon SX30	Y	stereo / mono	-	-	YES	2.0	-	-	-
8.		Canon SX20	Y	stereo / mono	-	-	YES	2.0	-	-	-
9.		Leica V-LUX 3	Y	stereo / -	-	-	mini	2.0	-	-	-
10.		Leica V-LUX 2	Y	stereo / mono	-	-	mini	2.0	-	-	-
11.		Olympus E-M5 II	Y	stereo / mono	Y	-	micro	2.0	Y	-	-
12.		Olympus E-M1	Y	stereo / mono	Y	-	micro	2.0	Y	-	-
13.		Panasonic G95	Y	stereo / mono	Y	Y	micro	2.0	Y	-	Y
14.		Panasonic GX9	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
15.		Panasonic GX7	Y	stereo / mono	-	-	mini	2.0	Y	Y	-
16.		Panasonic FZ200	Y	stereo / mono	Y	-	mini	2.0	-	-	-
17.		Panasonic FZ150	Y	stereo / -	-	-	mini	2.0	-	-	-

It is notable that the GX8 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 provide wifi capability.

Both the FZ100 and the GX8 have been discontinued, but can regularly be found used on ebay. The FZ100 was replaced by the Panasonic FZ150, while the GX8 was followed by the Panasonic GX9. Further information on the features and operation of the FZ100 and GX8 can be found, respectively, in the Panasonic FZ100 Manual (free pdf) or the online Panasonic GX8 Manual.

Review summary

So what is the bottom line? Which of the two cameras – the Panasonic FZ100 or the Panasonic GX8 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

Advantages of the Panasonic Lumix DMC-FZ100:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Ready to shoot: Has a lens built-in, whereas the GX8 requires a separate lens.
• Longer lasting: Can take more shots (410 versus 330) on a single battery charge.
• Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
• 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 DMC-GX8:

• More detail: Has more megapixels (20.2 vs 14MP), which boosts linear resolution by 20%.
• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• 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).
• Better sound: Can connect to an external microphone for higher quality sound recording.
• More detailed viewfinder: Has higher resolution electronic viewfinder (2360k vs 202k dots).
• More detailed LCD: Has a higher resolution rear screen (1040k vs 460k dots).
• Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
• Faster shutter: Has higher mechanical shutter speed (1/8000s 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.
• Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
• 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.
• Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
• More modern: Reflects 4 years and 11 months of technical progress since the FZ100 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the GX8 is the clear winner of the contest (20 : 6 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 FZ100 and the Panasonic GX8 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 GX8. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is where reviews by experts come in. 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.

Expert Camera Reviews

		Camera   Model	AP   score	CL   score	DCW   score	DPR   score	EPZ   score	PB   score	Camera Launch	Launch Price (USD)	Street Price
1.		Panasonic FZ100	..	+	..	..	4.5/5	4.5/5	Jul 2010	499	ebay.com
2.		Panasonic GX8	5/5	+	..	82/100	4.5/5	4.5/5	Jul 2015	1,199	ebay.com
3.		Canon SX530	..	+ +	..	..	4/5	4/5	Jan 2015	429	ebay.com
4.		Canon SX60	3/5	+ +	..	75/100	4/5	4.5/5	Sep 2014	549	ebay.com
5.		Canon SX50	3/5	+ +	..	72/100	4.5/5	4.5/5	Sep 2012	429	ebay.com
6.		Canon SX40	..	+	..	..	4.5/5	4/5	Sep 2011	429	ebay.com
7.		Canon SX30	3/5	+ +	..	..	3.5/5	4/5	Sep 2010	429	ebay.com
8.		Canon SX20	..	+ +	..	73/100	..	4/5	Aug 2009	399	ebay.com
9.		Leica V-LUX 3	..	..	..	..	..	..	Dec 2011	949	ebay.com
10.		Leica V-LUX 2	..	..	..	..	..	..	Sep 2010	849	ebay.com
11.		Olympus E-M5 II	5/5	+ +	4.5/5	81/100	5/5	5/5	Feb 2015	1,099	ebay.com
12.		Olympus E-M1	5/5	+ +	..	84/100	4.5/5	4.5/5	Sep 2013	1,399	ebay.com
13.		Panasonic G95	4.5/5	+	4.5/5	83/100	4.5/5	4.5/5	Apr 2019	999	amazon.com
14.		Panasonic GX9	4/5	+	4/5	84/100	4.5/5	4.5/5	Feb 2018	849	ebay.com
15.		Panasonic GX7	4/5	+	..	79/100	5/5	5/5	Aug 2013	999	ebay.com
16.		Panasonic FZ200	3/5	+ +	..	80/100	4.5/5	4.5/5	Jul 2012	599	ebay.com
17.		Panasonic FZ150	3/5	+ +	..	76/100	4/5	4.5/5	Aug 2011	499	ebay.com
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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.

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Other camera comparisons

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