Panasonic GM1 vs Sony HX350

The Panasonic Lumix DMC-GM1 and the Sony Cyber-shot DSC-HX350 are two digital cameras that were revealed to the public, respectively, in October 2013 and December 2016. The GM1 is a mirrorless interchangeable lens camera, while the HX350 is a fixed lens compact. The cameras are based on a Four Thirds (GM1) and a 1/2.3-inch (HX350) sensor. The Panasonic has a resolution of 15.8 megapixels, whereas the Sony provides 19.9 MP.

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

Headline Specifications

Panasonic GM1		Sony HX350
Mirrorless system camera		Fixed lens compact camera
Micro Four Thirds lenses		24-1200mm f/2.8-6.3
15.8 MP – Four Thirds sensor		19.9 MP – 1/2.3" sensor
1080/60i Video		1080/60p Video
ISO 200-25,600		ISO 80-3,200 (80 - 12,800)
No viewfinder, LCD framing		Electronic viewfinder (202k dots)
3.0" LCD – 1036k dots		3.0" LCD – 922k dots
Fixed touchscreen		Tilting screen (no touchscreen)
5 shutter flaps per second		10 shutter flaps per second
230 shots per battery charge		300 shots per battery charge
99 x 55 x 30 mm, 204 g		130 x 93 x 103 mm, 652 g

Check GM1 offers at
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Check HX350 offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DMC-GM1 and the Sony Cyber-shot DSC-HX350? 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 GM1 and the Sony HX350. 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 GM1 can be obtained in three different colors (black, silver, red), while the HX350 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 Sony HX350 is considerably larger (122 percent) than the Panasonic GM1. In this context, it is worth noting that neither the GM1 nor the HX350 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the HX350 has a lens built in, whereas the GM1 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 GM1 and their specifications in the Micro Four Thirds Lens Catalog.

Concerning battery life, the GM1 gets 230 shots out of its Panasonic DMW-BLH7 battery, while the HX350 can take 300 images on a single charge of its Sony NP-BX1 power pack.

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, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

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 GM1	99 mm	55 mm	30 mm	204 g	230	n	Oct 2013	749	ebay.com
2.		Sony HX350	130 mm	93 mm	103 mm	652 g	300	n	Dec 2016	449	ebay.com
3.		Kodak AZ901	139 mm	104 mm	119 mm	777 g	400	n	Jan 2016	499	amazon.com
4.		Nikon B700	125 mm	85 mm	107 mm	565 g	350	n	Feb 2016	499	ebay.com
5.		Panasonic FZ80	130 mm	94 mm	119 mm	616 g	330	n	Jan 2017	399	ebay.com
6.		Panasonic G3	115 mm	84 mm	47 mm	336 g	270	n	May 2011	599	ebay.com
7.		Panasonic G5	120 mm	83 mm	71 mm	396 g	320	n	Jul 2012	599	ebay.com
8.		Panasonic G6	122 mm	85 mm	71 mm	390 g	340	n	Apr 2013	599	ebay.com
9.		Panasonic GH2	124 mm	90 mm	76 mm	442 g	330	n	Sep 2010	899	ebay.com
10.		Panasonic GH3	133 mm	93 mm	82 mm	550 g	540	Y	Sep 2012	1,299	ebay.com
11.		Panasonic GM5	99 mm	60 mm	36 mm	211 g	220	n	Sep 2014	749	ebay.com
12.		Panasonic GX1	116 mm	68 mm	39 mm	318 g	320	n	Nov 2011	699	ebay.com
13.		Panasonic GX7	123 mm	71 mm	55 mm	402 g	350	n	Aug 2013	999	ebay.com
14.		Panasonic LX100	115 mm	66 mm	55 mm	393 g	300	n	Sep 2014	899	ebay.com
15.		Ricoh GR	117 mm	61 mm	35 mm	245 g	290	n	Apr 2013	799	ebay.com
16.		Sony HX90V	102 mm	58 mm	36 mm	245 g	360	n	Apr 2015	429	ebay.com
17.		Sony HX400V	130 mm	93 mm	103 mm	660 g	300	n	Feb 2014	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 naturally be influenced heavily by the price. 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 HX350 was launched at a lower price than the GM1, 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.

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. 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 GM1 features a Four Thirds sensor and the Sony HX350 a 1/2.3-inch sensor. The sensor area in the HX350 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 HX350 offers a higher resolution of 19.9 megapixels, compared with 15.8 MP of the GM1. 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 1.19μm versus 3.77μm for the GM1). However, it should be noted that the HX350 is much more recent (by 3 years and 2 months) than the GM1, 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 HX350 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony HX350 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the HX350 for good quality output (200 dots per inch) amounts to 25.8 x 19.3 inches or 65.4 x 49.1 cm, for very good quality (250 dpi) 20.6 x 15.5 inches or 52.3 x 39.3 cm, and for excellent quality (300 dpi) 17.2 x 12.9 inches or 43.6 x 32.7 cm. The corresponding values for the Panasonic GM1 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-GM1 has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 125-25600. The corresponding ISO settings for the Sony Cyber-shot DSC-HX350 are ISO 80 to ISO 3200, with the possibility to increase the ISO range to 80-12800.

In terms of underlying technology, the GM1 is build around a CMOS sensor, while the HX350 uses a BSI-CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

Consistent information on actual sensor performance is available from DXO Mark for many 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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar 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 GM1	Four Thirds	15.8	4592	3448	1080/60i	22.3	11.7	660	66
2.		Sony HX350	1/2.3	19.9	5152	3864	1080/60p	20.5	11.9	896	49
3.		Kodak AZ901	1/2.3	20.2	5184	3888	1080/30p	20.3	11.7	806	48
4.		Nikon B700	1/2.3	20.2	5184	3888	4K/30p	20.4	11.8	818	48
5.		Panasonic FZ80	1/2.3	18.0	4896	3672	4K/30p	20.5	11.9	900	49
6.		Panasonic G3	Four Thirds	15.8	4592	3448	1080/60i	21.0	10.6	667	56
7.		Panasonic G5	Four Thirds	15.9	4608	3456	1080/60p	21.4	11.6	618	61
8.		Panasonic G6	Four Thirds	15.9	4608	3456	1080/60p	21.3	11.5	639	61
9.		Panasonic GH2	Four Thirds	15.9	4608	3456	1080/60i	21.2	11.3	655	60
10.		Panasonic GH3	Four Thirds	15.9	4608	3456	1080/60p	22.7	12.4	812	71
11.		Panasonic GM5	Four Thirds	15.8	4592	3448	1080/60p	22.1	11.7	721	66
12.		Panasonic GX1	Four Thirds	15.8	4592	3448	1080/60p	20.8	10.6	703	55
13.		Panasonic GX7	Four Thirds	15.8	4592	3448	1080/60p	22.6	12.2	718	70
14.		Panasonic LX100	Four Thirds	12.7	4112	3088	4K/30p	22.3	12.5	553	67
15.		Ricoh GR	APS-C	16.1	4928	3264	1080/30p	23.6	13.5	972	78
16.		Sony HX90V	1/2.3	18.0	4896	3672	1080/60p	20.2	11.6	738	47
17.		Sony HX400V	1/2.3	20.2	5184	3888	1080/60p	20.1	11.4	629	45
Note: DXO values in italics represent estimates based on sensor size and age.

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 HX350 provides a faster frame rate than the GM1. It can shoot movie footage at 1080/60p, while the Panasonic is limited to 1080/60i.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the HX350 has an electronic viewfinder (202k dots), which can be very helpful when shooting in bright sunlight. In contrast, the GM1 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Panasonic GM1 and Sony HX350 in connection with corresponding information for a sample of similar cameras.

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 GM1	none	n	3.0 / 1036	fixed	Y	1/500s	5.0/s	Y	n
2.		Sony HX350	202	n	3.0 / 922	tilting	n	1/4000s	10.0/s	Y	Y
3.		Kodak AZ901	202	n	3.0 / 920	swivel	n	1/2000s	5.0/s	Y	Y
4.		Nikon B700	921	n	3.0 / 921	swivel	n	1/4000s	5.0/s	Y	Y
5.		Panasonic FZ80	1166	n	3.0 / 1040	fixed	Y	1/2000s	10.0/s	Y	Y
6.		Panasonic G3	1440	n	3.0 / 460	swivel	Y	1/4000s	4.0/s	Y	n
7.		Panasonic G5	1440	n	3.0 / 920	swivel	Y	1/4000s	6.0/s	Y	n
8.		Panasonic G6	1440	n	3.0 / 1036	swivel	Y	1/4000s	7.0/s	Y	n
9.		Panasonic GH2	1534	n	3.0 / 460	swivel	n	1/4000s	3.0/s	Y	n
10.		Panasonic GH3	1746	n	3.0 / 614	swivel	Y	1/4000s	6.0/s	Y	n
11.		Panasonic GM5	1166	n	3.0 / 921	fixed	Y	1/500s	5.8/s	n	n
12.		Panasonic GX1	optional	n	3.0 / 460	fixed	Y	1/4000s	4.2/s	Y	n
13.		Panasonic GX7	2760	n	3.0 / 1040	tilting	Y	1/8000s	5.0/s	Y	Y
14.		Panasonic LX100	2764	n	3.0 / 921	fixed	n	1/4000s	11.0/s	n	Y
15.		Ricoh GR	optional	n	3.0 / 1230	fixed	n	1/4000s	4.0/s	Y	n
16.		Sony HX90V	638	n	3.0 / 921	tilting	n	1/2000s	10.0/s	Y	Y
17.		Sony HX400V	210	n	3.0 / 921	tilting	n	1/4000s	10.0/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The GM1 has a touchscreen, while the HX350 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 GM1 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 GM1 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.

The GM1 writes its imaging data to SDXC cards, while the HX350 uses SDXC or Memory Stick PRO Duo cards. The GM1 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the HX350 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-GM1 and Sony Cyber-shot DSC-HX350 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 GM1	-	stereo / mono	-	-	micro	2.0	Y	-	-
2.		Sony HX350	-	stereo / mono	-	-	micro	2.0	-	-	-
3.		Kodak AZ901	-	stereo / mono	-	-	micro	2.0	Y	-	-
4.		Nikon B700	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
5.		Panasonic FZ80	Y	stereo / mono	-	-	micro	2.0	Y	-	-
6.		Panasonic G3	Y	stereo / mono	-	-	mini	2.0	-	-	-
7.		Panasonic G5	Y	stereo / mono	-	-	mini	2.0	-	-	-
8.		Panasonic G6	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
9.		Panasonic GH2	Y	stereo / mono	Y	-	mini	2.0	-	-	-
10.		Panasonic GH3	Y	stereo / mono	Y	Y	mini	2.0	Y	-	-
11.		Panasonic GM5	Y	stereo / mono	-	-	micro	2.0	Y	-	-
12.		Panasonic GX1	Y	stereo / mono	-	-	mini	2.0	-	-	-
13.		Panasonic GX7	Y	stereo / mono	-	-	mini	2.0	Y	Y	-
14.		Panasonic LX100	Y	stereo / mono	-	-	micro	2.0	Y	Y	-
15.		Ricoh GR	Y	mono / mono	-	-	micro	2.0	-	-	-
16.		Sony HX90V	-	stereo / mono	-	-	micro	2.0	Y	Y	-
17.		Sony HX400V	Y	stereo / mono	-	-	micro	2.0	Y	Y	-

It is notable that the GM1 offers wifi support, while the HX350 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Both the GM1 and the HX350 have been discontinued, but can regularly be found used on ebay. The GM1 was replaced by the Panasonic GM5, while the HX350 does not have a direct successor. Further information on the features and operation of the GM1 and HX350 can be found, respectively, in the Panasonic GM1 Manual (free pdf) or the online Sony HX350 Manual.

Review summary

So what is the bottom line? Which of the two cameras – the Panasonic GM1 or the Sony HX350 – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.

Advantages of the Panasonic Lumix DMC-GM1:

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
• Richer colors: The pixel size advantage translates into images with better, more accurate colors.
• More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
• Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
• More detailed LCD: Has a higher resolution rear screen (1036k vs 922k dots).
• Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
• 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: Accepts interchangeable lenses, so that lens characteristics can be altered.
• More compact: Is smaller (99x55mm vs 130x93mm) and thus needs less room in the bag.
• 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 heavily discounted: Has been available for much longer (launched in October 2013).

Reasons to prefer the Sony Cyber-shot DSC-HX350:

• More detail: Has more megapixels (19.9 vs 15.8MP), which boosts linear resolution by 12%.
• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Better video: Provides higher movie framerates (1080/60p versus 1080/60i).
• Easier framing: Has an electronic viewfinder for image composition and settings control.
• More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
• Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/500s) to freeze action.
• Faster burst: Shoots at higher frequency (10 vs 5 flaps/sec) to capture the decisive moment.
• Ready to shoot: Has an integrated lens, whereas the GM1 necessitates an extra lens.
• Longer lasting: Gets more shots (300 versus 230) out of a single battery charge.
• Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More modern: Reflects 3 years and 2 months of technical progress since the GM1 launch.

If the number of relative strengths (bullet points above) is taken as a guide, the GM1 emerges as the winner of the contest (14 : 12 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 GM1 and the Sony HX350 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 the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the GM1 and the HX350 in practical situations. 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 where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular 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 GM1	3/5	+	..	78/100	5/5	4.5/5	Oct 2013	749	ebay.com
2.		Sony HX350	..	..	..	..	..	4/5	Dec 2016	449	ebay.com
3.		Kodak AZ901	..	..	..	..	3.5/5	3/5	Jan 2016	499	amazon.com
4.		Nikon B700	..	+	..	..	4/5	4/5	Feb 2016	499	ebay.com
5.		Panasonic FZ80	..	+ +	..	..	4.5/5	4.5/5	Jan 2017	399	ebay.com
6.		Panasonic G3	3/5	+ +	..	75/100	4.5/5	5/5	May 2011	599	ebay.com
7.		Panasonic G5	3/5	+ +	..	..	4.5/5	4.5/5	Jul 2012	599	ebay.com
8.		Panasonic G6	4/5	+ +	..	..	5/5	4.5/5	Apr 2013	599	ebay.com
9.		Panasonic GH2	5/5	+ +	..	79/100	4.5/5	5/5	Sep 2010	899	ebay.com
10.		Panasonic GH3	5/5	+ +	..	79/100	4.5/5	4.5/5	Sep 2012	1,299	ebay.com
11.		Panasonic GM5	3.5/5	+	..	77/100	5/5	4.5/5	Sep 2014	749	ebay.com
12.		Panasonic GX1	3/5	+	..	77/100	4.5/5	4.5/5	Nov 2011	699	ebay.com
13.		Panasonic GX7	4/5	+	..	79/100	5/5	5/5	Aug 2013	999	ebay.com
14.		Panasonic LX100	5/5	+ +	..	85/100	5/5	5/5	Sep 2014	899	ebay.com
15.		Ricoh GR	5/5	..	..	79/100	4.5/5	4.5/5	Apr 2013	799	ebay.com
16.		Sony HX90V	4/5	+ +	..	..	4/5	4.5/5	Apr 2015	429	ebay.com
17.		Sony HX400V	4/5	+ +	..	..	4/5	4/5	Feb 2014	499	ebay.com
Note: (+ +) 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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Other camera comparisons

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