Panasonic GF3 vs ZS100

The Panasonic Lumix DMC-GF3 and the Panasonic Lumix DMC-ZS100 (labelled Panasonic TZ100 in some countries) are two digital cameras that were officially introduced, respectively, in June 2011 and January 2016. The GF3 is a mirrorless interchangeable lens camera, while the ZS100 is a fixed lens compact. The cameras are based on a Four Thirds (GF3) and an one-inch (ZS100) sensor. The GF3 has a resolution of 12 megapixels, whereas the ZS100 provides 20 MP.

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

Headline Specifications

Panasonic GF3		Panasonic ZS100
Mirrorless system camera		Fixed lens compact camera
Micro Four Thirds lenses		25-250mm f/2.8-5.9
12 MP – Four Thirds sensor		20 MP – 1" sensor
1080/60i Video		4K/30p Video
ISO 160-6,400		ISO 125-12,800 (80 - 25,600)
No viewfinder, LCD framing		Electronic viewfinder (1166k dots)
3.0" LCD – 460k dots		3.0" LCD – 1040k dots
Fixed touchscreen		Fixed touchscreen
3.2 shutter flaps per second		10 shutter flaps per second
Lens stabilization only		In-body stabilization
300 shots per battery charge		300 shots per battery charge
108 x 67 x 32 mm, 264 g		111 x 65 x 44 mm, 312 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DMC-GF3 and the Panasonic Lumix DMC-ZS100? 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

An illustration of the physical size and weight of the Panasonic GF3 and the Panasonic ZS100 is provided in the side-by-side display below. 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 dimensions are rounded to the nearest millimeter.

The GF3 can be obtained in five different colors (black, brown, pink, red, white), while the ZS100 is available in two color-versions (black, silver).

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GF3 and the Panasonic ZS100 are of equal size. In this context, it is worth noting that neither the GF3 nor the ZS100 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the ZS100 has a lens built in, whereas the GF3 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 GF3 and their specifications in the Micro Four Thirds Lens Catalog.

The power pack in the ZS100 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 want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

Body Specifications

		Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life	Weather Sealing	Camera Launch	Launch Price	Street Price
1.		Panasonic GF3	108 mm	67 mm	32 mm	264 g	300	n	Jun 2011	US$ 549	ebay.com
2.		Panasonic ZS100	111 mm	65 mm	44 mm	312 g	300	n	Jan 2016	US$ 699	ebay.com
3.		Canon G5 X	112 mm	76 mm	44 mm	353 g	210	n	Oct 2015	US$ 799	ebay.com
4.		Canon G7 X	103 mm	60 mm	40 mm	304 g	210	n	Sep 2014	US$ 699	ebay.com
5.		Canon G7 X Mark II	106 mm	61 mm	42 mm	319 g	265	n	Feb 2016	US$ 699	ebay.com
6.		Olympus E-PL3	110 mm	64 mm	37 mm	313 g	300	n	Jun 2011	US$ 599	ebay.com
7.		Olympus E-PM1	110 mm	64 mm	34 mm	265 g	330	n	Jun 2011	US$ 499	ebay.com
8.		Panasonic G1	124 mm	84 mm	45 mm	360 g	410	n	Sep 2008	US$ 599	ebay.com
9.		Panasonic G2	124 mm	84 mm	74 mm	428 g	360	n	Mar 2010	US$ 599	ebay.com
10.		Panasonic G3	115 mm	84 mm	47 mm	336 g	270	n	May 2011	US$ 599	ebay.com
11.		Panasonic G10	124 mm	84 mm	74 mm	388 g	380	n	Mar 2010	US$ 499	ebay.com
12.		Panasonic GF2	113 mm	68 mm	33 mm	310 g	300	n	Nov 2010	US$ 549	ebay.com
13.		Panasonic GF5	108 mm	67 mm	37 mm	267 g	360	n	Apr 2012	US$ 499	ebay.com
14.		Panasonic LX5	110 mm	65 mm	43 mm	271 g	400	n	Jul 2010	US$ 499	ebay.com
15.		Panasonic LX7	111 mm	68 mm	46 mm	298 g	330	n	Jul 2012	US$ 499	ebay.com
16.		Panasonic LX10	106 mm	60 mm	42 mm	310 g	260	n	Sep 2016	US$ 699	amazon.com
17.		Panasonic ZS200	111 mm	65 mm	45 mm	340 g	370	n	Feb 2018	US$ 799	amazon.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
Convert to Imperial

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. 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.

Sensor comparison

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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Panasonic GF3 features a Four Thirds sensor and the Panasonic ZS100 an one-inch sensor. The sensor area in the ZS100 is 48 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 2.7. The sensor in the GF3 has a native 4:3 aspect ratio, while the one in the ZS100 offers a 3:2 aspect.

Despite having a smaller sensor, the ZS100 offers a higher resolution of 20 megapixels, compared with 12 MP of the GF3. 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 2.41μm versus 4.33μm for the GF3). However, it should be noted that the ZS100 is much more recent (by 4 years and 6 months) than the GF3, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.

The resolution advantage of the Panasonic ZS100 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the ZS100 for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inches or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inches or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inches or 46.3 x 30.9 cm. The corresponding values for the Panasonic GF3 are 20 x 15 inches or 50.8 x 38.1 cm for good quality, 16 x 12 inches or 40.6 x 30.5 cm for very good quality, and 13.3 x 10 inches or 33.9 x 25.4 cm for excellent quality prints.

The Panasonic Lumix DMC-GF3 has a native sensitivity range from ISO 160 to ISO 6400. The corresponding ISO settings for the Panasonic Lumix DMC-ZS100 are ISO 125 to ISO 12800, with the possibility to increase the ISO range to 80-25600.

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"). Of the two cameras under consideration, the ZS100 offers substantially better image quality than the GF3 (overall score 20 points higher). The advantage is based on 2.2 bits higher color depth, 2.4 EV in additional dynamic range, and 0.3 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Panasonic GF3	Four Thirds	12.0	4000	3000	1080/60i	20.6	10.1	459	50
2.		Panasonic ZS100	1-inch	20.0	5472	3648	4K/30p	22.8	12.5	559	70
3.		Canon G5 X	1-inch	20.0	5472	3648	1080/60p	21.4	12.3	471	62
4.		Canon G7 X	1-inch	20.0	5472	3648	1080/60p	23.0	12.7	556	71
5.		Canon G7 X Mark II	1-inch	20.0	5472	3648	1080/60p	21.8	11.9	260	62
6.		Olympus E-PL3	Four Thirds	12.2	4032	3024	1080/60i	20.9	10.3	499	52
7.		Olympus E-PM1	Four Thirds	12.2	4032	3024	1080/60i	21.0	10.3	499	52
8.		Panasonic G1	Four Thirds	12.0	4000	3000	none	21.1	10.3	463	53
9.		Panasonic G2	Four Thirds	12.0	4000	3000	720/30p	21.2	10.3	493	53
10.		Panasonic G3	Four Thirds	15.8	4592	3448	1080/60i	21.0	10.6	667	56
11.		Panasonic G10	Four Thirds	12.0	4000	3000	720/30p	21.2	10.1	411	52
12.		Panasonic GF2	Four Thirds	12.0	4000	3000	1080/60i	21.2	10.3	506	54
13.		Panasonic GF5	Four Thirds	12.0	4000	3000	1080/60i	20.5	10.0	573	50
14.		Panasonic LX5	1/1.7	10.0	3648	2736	720/60p	19.6	10.8	132	41
15.		Panasonic LX7	1/1.7	10.0	3648	2736	1080/60p	20.7	11.7	147	50
16.		Panasonic LX10	1-inch	20.0	5472	3648	4K/30p	22.8	12.5	581	70
17.		Panasonic ZS200	1-inch	20.0	5472	3648	4K/30p	22.0	12.2	449	64
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 are equipped with sensors that have a sufficiently high read-out speed for moving images, but the ZS100 provides a better video resolution than the GF3. It can shoot movie footage at 4K/30p, while the GF3 is limited to 1080/60i.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the ZS100 has an electronic viewfinder (1166k dots), which can be very helpful when shooting in bright sunlight. In contrast, the GF3 relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the Panasonic GF3 and Panasonic ZS100 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 GF3	none	n	3.0 / 460	fixed	Y	1/4000s	3.2/s	Y	n
2.		Panasonic ZS100	1166	n	3.0 / 1040	fixed	Y	1/2000s	10.0/s	Y	Y
3.		Canon G5 X	2360	n	3.0 / 1040	swivel	Y	1/2000s	5.9/s	Y	Y
4.		Canon G7 X	none	n	3.0 / 1040	tilting	Y	1/2000s	6.5/s	Y	Y
5.		Canon G7 X Mark II	none	n	3.0 / 1040	tilting	Y	1/2000s	8.0/s	Y	Y
6.		Olympus E-PL3	optional	n	3.0 / 460	tilting	n	1/4000s	5.5/s	n	Y
7.		Olympus E-PM1	optional	n	3.0 / 460	fixed	n	1/4000s	5.5/s	n	Y
8.		Panasonic G1	1440	n	3.0 / 460	swivel	n	1/4000s	3.0/s	Y	n
9.		Panasonic G2	1440	n	3.0 / 460	swivel	Y	1/4000s	2.6/s	Y	n
10.		Panasonic G3	1440	n	3.0 / 460	swivel	Y	1/4000s	4.0/s	Y	n
11.		Panasonic G10	202	n	3.0 / 460	fixed	n	1/4000s	2.6/s	Y	n
12.		Panasonic GF2	optional	n	3.0 / 460	fixed	Y	1/4000s	2.6/s	Y	n
13.		Panasonic GF5	none	n	3.0 / 920	fixed	Y	1/4000s	4.0/s	Y	n
14.		Panasonic LX5	optional	n	3.0 / 460	fixed	n	1/4000s	2.5/s	Y	Y
15.		Panasonic LX7	optional	n	3.0 / 920	fixed	n	1/4000s	11.0/s	Y	Y
16.		Panasonic LX10	none	n	3.0 / 1040	tilting	Y	1/4000s	10.0/s	Y	Y
17.		Panasonic ZS200	2330	n	3.0 / 1240	fixed	Y	1/2000s	10.0/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

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 ZS100 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 ZS100 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 GF3 and the ZS100 write their files to SDXC cards. The ZS100 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the GF3 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-GF3 and Panasonic Lumix DMC-ZS100 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 GF3	-	stereo / mono	-	-	mini	2.0	-	-	-
2.		Panasonic ZS100	-	stereo / mono	-	-	micro	2.0	Y	-	-
3.		Canon G5 X	Y	stereo / mono	-	-	mini	2.0	Y	Y	-
4.		Canon G7 X	-	stereo / mono	-	-	micro	2.0	Y	Y	-
5.		Canon G7 X Mark II	-	stereo / mono	-	-	micro	2.0	Y	Y	-
6.		Olympus E-PL3	Y	stereo / -	-	-	mini	2.0	-	-	-
7.		Olympus E-PM1	Y	stereo / mono	-	-	mini	2.0	-	-	-
8.		Panasonic G1	Y	- / -	-	-	mini	2.0	-	-	-
9.		Panasonic G2	Y	stereo / mono	-	-	mini	2.0	-	-	-
10.		Panasonic G3	Y	stereo / mono	-	-	mini	2.0	-	-	-
11.		Panasonic G10	Y	mono / -	-	-	mini	2.0	-	-	-
12.		Panasonic GF2	Y	stereo / mono	-	-	mini	2.0	-	-	-
13.		Panasonic GF5	-	stereo / mono	-	-	mini	2.0	-	-	-
14.		Panasonic LX5	Y	mono / mono	-	-	mini	2.0	-	-	-
15.		Panasonic LX7	Y	stereo / mono	-	-	mini	2.0	-	-	-
16.		Panasonic LX10	-	stereo / mono	-	-	micro	2.0	Y	-	-
17.		Panasonic ZS200	-	stereo / mono	-	-	micro	2.0	Y	-	Y

It is notable that the ZS100 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the GF3 does not provide wifi capability.

Both the GF3 and the ZS100 have been discontinued, but can regularly be found used on ebay. The GF3 was replaced by the Panasonic GF5, while the ZS100 was followed by the Panasonic ZS200. Further information on the features and operation of the GF3 and ZS100 can be found, respectively, in the Panasonic GF3 Manual (free pdf) or the online Panasonic ZS100 Manual.

Review summary

So what conclusions can be drawn? Is the Panasonic GF3 better than the Panasonic ZS100 or vice versa? A synthesis of the relative strong points of each of the models is listed below.

Arguments in favor of the Panasonic Lumix DMC-GF3:

• 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.
• More heavily discounted: Has been available for much longer (launched in June 2011).

Advantages of the Panasonic Lumix DMC-ZS100:

• More detail: Has more megapixels (20 vs 12MP), which boosts linear resolution by 32%.
• Better image quality: Scores substantially higher (20 points) in the DXO overall evaluation.
• Richer colors: Generates noticeably more natural colors (2.2 bits more color depth).
• More dynamic range: Captures a broader range of light and dark details (2.4 EV of extra DR).
• Better video: Provides higher definition movie capture (4K/30p vs 1080/60i).
• 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).
• Faster burst: Shoots at higher frequency (10 vs 3.2 flaps/sec) to capture the decisive moment.
• Less disturbing: Has an electronic shutter option for completely silent shooting.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• Ready to shoot: Has an integrated lens, whereas the GF3 necessitates an extra lens.
• 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.
• Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
• More modern: Reflects 4 years and 6 months of technical progress since the GF3 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the ZS100 is the clear winner of the contest (16 : 3 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 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 GF3 and the Panasonic ZS100 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the GF3 or the ZS100. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

Expert reviews

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.

Expert Camera Reviews

		Camera   Model	AP   score	CL   score	DCW   score	DPR   score	EPZ   score	PB   score	Camera Launch	Launch Price	Street Price
1.		Panasonic GF3	3/5	82/100	..	71/100	4.5/5	4/5	Jun 2011	US$ 549	ebay.com
2.		Panasonic ZS100	4.5/5	+ +	..	82/100	4.5/5	4.5/5	Jan 2016	US$ 699	ebay.com
3.		Canon G5 X	5/5	+ +	..	78/100	4.5/5	4.5/5	Oct 2015	US$ 799	ebay.com
4.		Canon G7 X	4/5	+ +	..	77/100	4.5/5	4.5/5	Sep 2014	US$ 699	ebay.com
5.		Canon G7 X Mark II	4.5/5	+ +	..	81/100	4.5/5	4.5/5	Feb 2016	US$ 699	ebay.com
6.		Olympus E-PL3	3/5	+ +	..	72/100	4.5/5	4/5	Jun 2011	US$ 599	ebay.com
7.		Olympus E-PM1	..	86/100	..	71/100	4.5/5	4.5/5	Jun 2011	US$ 499	ebay.com
8.		Panasonic G1	..	+ +	..	70/100	4/5	4.5/5	Sep 2008	US$ 599	ebay.com
9.		Panasonic G2	..	..	..	72/100	4/5	4.5/5	Mar 2010	US$ 599	ebay.com
10.		Panasonic G3	3/5	+ +	..	75/100	4.5/5	5/5	May 2011	US$ 599	ebay.com
11.		Panasonic G10	3/5	..	..	70/100	4/5	4/5	Mar 2010	US$ 499	ebay.com
12.		Panasonic GF2	3/5	82/100	..	70/100	4.5/5	4.5/5	Nov 2010	US$ 549	ebay.com
13.		Panasonic GF5	3/5	..	..	..	4.5/5	4.5/5	Apr 2012	US$ 499	ebay.com
14.		Panasonic LX5	4/5	+	..	73/100	4.5/5	4.5/5	Jul 2010	US$ 499	ebay.com
15.		Panasonic LX7	3/5	+ +	..	75/100	4/5	4.5/5	Jul 2012	US$ 499	ebay.com
16.		Panasonic LX10	..	+ +	4/5	81/100	4/5	4.5/5	Sep 2016	US$ 699	amazon.com
17.		Panasonic ZS200	..	+ +	4.5/5	81/100	4.5/5	4.5/5	Feb 2018	US$ 799	amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

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. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

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Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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