Canon 7D vs Panasonic GX800

The Canon EOS 7D and the Panasonic Lumix DMC-GX800 (labelled Panasonic GX850 in some countries) are two digital cameras that were revealed to the public, respectively, in September 2009 and January 2017. The 7D is a DSLR, while the GX800 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (7D) and a Four Thirds (GX800) sensor. The Canon has a resolution of 17.9 megapixels, whereas the Panasonic provides 15.8 MP.

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

Headline Specifications

Canon 7D		Panasonic GX800
Digital single lens reflex		Mirrorless system camera
Canon EF mount lenses		Micro Four Thirds lenses
17.9 MP, APS-C Sensor		15.8 MP, Four Thirds Sensor
1080/30p Video		4K/30p Video
ISO 100-6,400 (100 - 12,800)		ISO 200-25,600
Optical viewfinder		No viewfinder, LCD framing
3.0 LCD, 920k dots		3.0 LCD, 1040k dots
Fixed screen (not touch-sensitive)		Tilting touchscreen
8 shutter flaps per second		10 shutter flaps per second
Weathersealed body		not weather sealed
800 shots per battery charge		210 shots per battery charge
148 x 111 x 74 mm, 860 g		107 x 65 x 33 mm, 269 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 7D and the Panasonic Lumix DMC-GX800? 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 Canon 7D and the Panasonic GX800 is provided 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 size dimensions are rounded to the nearest millimeter.

The GX800 can be obtained in three different colors (black, silver, red), while the 7D 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 GX800 is considerably smaller (58 percent) than the Canon 7D. Moreover, the GX800 is substantially lighter (69 percent) than the 7D. It is worth mentioning in this context that the 7D is splash and dust resistant, while the GX800 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (7D) and the Micro Four Thirds Lens Catalog (GX800). Mirrorless cameras, such as the GX800, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.

Concerning battery life, the 7D gets 800 shots out of its LP-E6 battery, while the GX800 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. 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.		Canon 7D	148 mm	111 mm	74 mm	860 g	800	Y	Sep 2009	1,699
2.		Panasonic GX800	107 mm	65 mm	33 mm	269 g	210	n	Jan 2017	549
3.		Canon 80D	139 mm	105 mm	79 mm	730 g	960	Y	Feb 2016	1,199
4.		Canon G3 X	123 mm	77 mm	105 mm	733 g	300	Y	Jun 2015	999
5.		Canon M10	108 mm	67 mm	35 mm	301 g	255	n	Oct 2015	499
6.		Canon 7D II	149 mm	112 mm	78 mm	910 g	670	Y	Sep 2014	1,799
7.		Canon 70D	139 mm	104 mm	79 mm	755 g	920	Y	Jul 2013	1,199
8.		Canon 60D	145 mm	106 mm	79 mm	755 g	1100	Y	Aug 2010	1,399
9.		Canon 1D Mark IV	156 mm	157 mm	80 mm	1230 g	1500	Y	Oct 2009	4,999
10.		Canon 5D Mark II	152 mm	114 mm	75 mm	850 g	850	Y	Sep 2008	3,499
11.		Canon 50D	146 mm	108 mm	74 mm	822 g	800	Y	Aug 2008	1,299
12.		Nikon D7000	132 mm	105 mm	77 mm	780 g	1050	Y	Sep 2010	1,499
13.		Panasonic GF7	107 mm	65 mm	33 mm	266 g	230	n	Jan 2015	499
14.		Panasonic G6	122 mm	85 mm	71 mm	390 g	340	n	Apr 2013	599
15.		Panasonic GF6	111 mm	65 mm	38 mm	323 g	340	n	Apr 2013	499
16.		Panasonic GF5	108 mm	67 mm	37 mm	267 g	360	n	Apr 2012	499
17.		Sony RX10 III	133 mm	94 mm	127 mm	1051 g	420	Y	Mar 2016	1,499
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
Convert to Imperial

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 GX800 was launched at a markedly lower price (by 68 percent) than the 7D, which puts it into a different market segment. 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 Canon 7D features an APS-C sensor and the Panasonic GX800 a Four Thirds sensor. The sensor area in the GX800 is 32 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 2.0. The sensor in the 7D has a native 3:2 aspect ratio, while the one in the GX800 offers a 4:3 aspect.

In terms of underlying technology, both cameras are build around CMOS sensors.

With 17.9MP, the 7D offers a higher resolution than the GX800 (15.8MP), but the 7D nevertheless has larger individual pixels (pixel pitch of 4.31μm versus 3.77μm for the GX800) due to its larger sensor. However, the GX800 is a much more recent model (by 7 years and 4 months) than the 7D, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the GX800 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Canon 7D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 7D for good quality output (200 dots per inch) amounts to 25.9 x 17.3 inches or 65.8 x 43.9 cm, for very good quality (250 dpi) 20.7 x 13.8 inches or 52.7 x 35.1 cm, and for excellent quality (300 dpi) 17.3 x 11.5 inches or 43.9 x 29.3 cm. The corresponding values for the Panasonic GX800 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 Canon EOS 7D has a native sensitivity range from ISO 100 to ISO 6400, which can be extended to ISO 100-12800. The corresponding ISO settings for the Panasonic Lumix DMC-GX800 are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. Of the two cameras under consideration, the GX800 has a markedly higher DXO score than the 7D (overall score 7 points higher), which will translate into better image quality. The advantage is based on 1.2 bits higher color depth, 1.6 EV in additional dynamic range, and 0.5 stops of reduced 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.		Canon 7D	APS-C	17.9	5184	3456	1080/30p	22.0	11.7	854		66
2.		Panasonic GX800	Four Thirds	15.8	4592	3448	4K/30p	23.2	13.3	586		73
3.		Canon 80D	APS-C	24.0	6000	4000	1080/60p	23.6	13.2	1135		79
4.		Canon G3 X	1-inch	20.0	5472	3648	1080/60p	21.4	12.3	521		63
5.		Canon M10	APS-C	17.9	5184	3456	1080/30p	22.2	11.4	753		65
6.		Canon 7D II	APS-C	20.0	5472	3648	1080/60p	22.4	11.8	1082		70
7.		Canon 70D	APS-C	20.0	5472	3648	1080/30p	22.5	11.6	926		68
8.		Canon 60D	APS-C	17.9	5184	3456	1080/30p	22.2	11.5	813		66
9.		Canon 1D Mark IV	APS-H	16.0	4896	3264	1080/30p	22.8	12.0	1320		74
10.		Canon 5D Mark II	Full Frame	21.0	5616	3744	1080/30p	23.7	11.9	1815		79
11.		Canon 50D	APS-C	15.1	4752	3168	none	21.8	11.4	696		63
12.		Nikon D7000	APS-C	16.1	4928	3264	10800/24p	23.5	13.9	1167		80
13.		Panasonic GF7	Four Thirds	15.8	4592	3448	1080/60p	..	..	..		..
14.		Panasonic G6	Four Thirds	15.9	4608	3456	1080/60p	21.3	11.5	639		61
15.		Panasonic GF6	Four Thirds	15.8	4592	3448	1080/60i	20.7	10.6	622		54
16.		Panasonic GF5	Four Thirds	12.0	4000	3000	1080/60i	21.4	11.6	618		61
17.		Sony RX10 III	1-inch	20.0	5472	3648	4K/30p	23.1	12.6	472		70

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the GX800 provides a better video resolution than the 7D. It can shoot movie footage at 4K/30p, while the Canon is limited to 1080/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the 7D has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the GX800 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Canon 7D and Panasonic GX800 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 Size (inch)	LCD Resolution (000 dots)	LCD Attach- ment	Touch Screen (yes/no)	Mech Shutter Speed	Shutter Flaps (1/sec)	Built-in Flash (yes/no)	Built-in Image Stab
1.		Canon 7D	optical	Y	3.0	920	fixed	n	1/8000s	8.0	Y	n
2.		Panasonic GX800	none	n	3.0	1040	tilting	Y	1/500s	10.0	Y	n
3.		Canon 80D	optical	Y	3.0	1040	swivel	Y	1/8000s	7.0	Y	n
4.		Canon G3 X	optional	n	3.2	1620	tilting	Y	1/2000s	5.9	Y	Y
5.		Canon M10	none	n	3.0	1040	tilting	Y	1/4000s	4.6	Y	n
6.		Canon 7D II	optical	Y	3.0	1040	fixed	n	1/8000s	10.0	Y	n
7.		Canon 70D	optical	Y	3.0	1040	swivel	Y	1/8000s	7.0	Y	n
8.		Canon 60D	optical	Y	3.0	1040	swivel	n	1/8000s	5.3	Y	n
9.		Canon 1D Mark IV	optical	Y	3.0	920	fixed	n	1/8000s	10.0	n	n
10.		Canon 5D Mark II	optical	Y	3.0	920	fixed	n	1/8000s	3.9	n	n
11.		Canon 50D	optical	Y	3.0	920	fixed	n	1/8000s	6.3	Y	n
12.		Nikon D7000	optical	Y	3.0	921	fixed	n	1/8000s	6.0	Y	n
13.		Panasonic GF7	none	n	3.0	1040	tilting	Y	1/500s	5.8	Y	n
14.		Panasonic G6	1440	n	3.0	1036	swivel	Y	1/4000s	7.0	Y	n
15.		Panasonic GF6	none	n	3.0	1040	tilting	Y	1/4000s	4.2	Y	n
16.		Panasonic GF5	none	n	3.0	920	fixed	Y	1/4000s	4.0	Y	n
17.		Sony RX10 III	2359	Y	3.0	1229	tilting	n	1/2000s	14.0	Y	Y

One feature that is present on the 7D, but is missing on the GX800 is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

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 GX800 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 GX800 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 7D writes its imaging data to Compact Flash cards, while the GX800 uses SDXC 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 Canon EOS 7D and Panasonic Lumix DMC-GX800 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 Microphone	Internal Speaker	Microphone Port	Headphone Port	HDMI Port	USB Port	WiFi Support	NFC Support	Bluetooth Support
1.		Canon 7D	Y	mono	-	Y	-	mini	2.0	-	-	-
2.		Panasonic GX800	-	stereo	mono	-	-	micro	2.0	Y	-	-
3.		Canon 80D	Y	stereo	mono	Y	Y	mini	2.0	Y	Y	-
4.		Canon G3 X	Y	stereo	mono	Y	Y	mini	2.0	Y	Y	-
5.		Canon M10	-	stereo	mono	-	-	mini	2.0	Y	Y	-
6.		Canon 7D II	Y	stereo	mono	Y	Y	mini	3.0	-	-	-
7.		Canon 70D	Y	stereo	mono	Y	-	mini	2.0	Y	-	-
8.		Canon 60D	Y	mono	mono	Y	-	mini	2.0	-	-	-
9.		Canon 1D Mark IV	Y	stereo	-	Y	-	mini	2.0	-	-	-
10.		Canon 5D Mark II	Y	mono	mono	Y	-	mini	2.0	-	-	-
11.		Canon 50D	Y	-	-	-	-	mini	2.0	-	-	-
12.		Nikon D7000	Y	mono	mono	Y	-	mini	2.0	-	-	-
13.		Panasonic GF7	-	stereo	mono	-	-	micro	2.0	Y	Y	-
14.		Panasonic G6	Y	stereo	mono	Y	-	mini	2.0	Y	Y	-
15.		Panasonic GF6	-	stereo	mono	-	-	mini	2.0	Y	Y	-
16.		Panasonic GF5	-	stereo	mono	-	-	mini	2.0	-	-	-
17.		Sony RX10 III	Y	stereo	mono	Y	Y	micro	2.0	Y	Y	-

It is notable that the 7D has a hotshoe, while the GX800 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Studio photographers will appreciate that the Canon 7D (unlike the GX800) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The GX800 is a recent model that features in the current product line-up of Panasonic. In contrast, the 7D has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the 7D was succeeded by the Canon 7D Mark II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Panasonic websites.

Review summary

So how do things add up? Is there a clear favorite between the Canon 7D and the Panasonic GX800? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

Advantages of the Canon EOS 7D:

• More detail: Offers more megapixels (17.9 vs 15.8MP) with a 8% higher linear resolution.
• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Better low-light sensitivity: Requires less light for good images (0.5 stops ISO advantage).
• Better sound: Can connect to an external microphone for higher quality sound recording.
• Easier framing: Has an optical viewfinder for image composition and settings control.
• Easier setting verification: Features an LCD display on top to control shooting parameters.
• Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/500s) to freeze action.
• Longer lasting: Can take more shots (800 versus 210) on a single battery charge.
• Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
• More heavily discounted: Has been available for much longer (launched in September 2009).

Reasons to prefer the Panasonic Lumix DMC-GX800:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Better image quality: Scores markedly higher (7 points) in the DXO overall evaluation.
• Richer colors: Generates noticeably more natural colors (1.2 bits more color depth).
• More dynamic range: Captures a broader range of light and dark details (1.6 EV of extra DR).
• Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
• More detailed LCD: Has a higher resolution rear screen (1040k vs 920k dots).
• More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
• Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• Faster burst: Shoots at higher frequency (10 vs 8 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.
• More compact: Is smaller (107x65mm vs 148x111mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight (by 591g or 69 percent) and is thus easier to take along.
• More legacy lens friendly: Can use many non-native lenses via adapters.
• Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
• More affordable: Was introduced into a lower priced category (68 percent cheaper at launch).
• More modern: Reflects 7 years and 4 months of technical progress since the 7D launch.

If the count of relative strengths (bullet points above) is taken as a measure, the GX800 is the clear winner of the contest (18 : 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 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 Canon 7D and the Panasonic GX800 place the cameras among the top in their class? Find out in the latest Best DSLR 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 technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the 7D and the GX800 in practical situations. 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], 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	DPR   score	EPZ   score	PB   score	Camera Launch	Launch Price (USD)			Street Price
1.		Canon 7D	5/5	+ +	84/100	4.5/5	4.5/5	Sep 2009	1,699
2.		Panasonic GX800	..	+	76/100	4.5/5	4.5/5	Jan 2017	549
3.		Canon 80D	4/5	+ +	84/100	4.5/5	4.5/5	Feb 2016	1,199
4.		Canon G3 X	3.5/5	+	..	4.5/5	4/5	Jun 2015	999
5.		Canon M10	..	..	..	..	4/5	Oct 2015	499
6.		Canon 7D II	4.5/5	+	84/100	4/5	4.5/5	Sep 2014	1,799
7.		Canon 70D	5/5	+ +	83/100	4.5/5	5/5	Jul 2013	1,199
8.		Canon 60D	5/5	+	79/100	4/5	4.5/5	Aug 2010	1,399
9.		Canon 1D Mark IV	5/5	..	89/100	..	..	Oct 2009	4,999
10.		Canon 5D Mark II	4/5	91/100	79/100	4/5	..	Sep 2008	3,499
11.		Canon 50D	..	+ +	+ +	4.5/5	4.5/5	Aug 2008	1,299
12.		Nikon D7000	4/5	..	80/100	4.5/5	4.5/5	Sep 2010	1,499
13.		Panasonic GF7	4/5	+	..	4.5/5	4.5/5	Jan 2015	499
14.		Panasonic G6	4/5	+ +	..	5/5	4.5/5	Apr 2013	599
15.		Panasonic GF6	..	+ +	..	4.5/5	4.5/5	Apr 2013	499
16.		Panasonic GF5	3/5	..	..	4.5/5	4.5/5	Apr 2012	499
17.		Sony RX10 III	5/5	+	84/100	4.5/5	4.5/5	Mar 2016	1,499
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. 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. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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.

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Specifications: Canon 7D vs Panasonic GX800

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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