Canon G7 X Mark II vs Leica Digilux 3

The Canon PowerShot G7 X Mark II and the Leica Digilux 3 are two digital cameras that were officially introduced, respectively, in February 2016 and September 2006. The G7X Mark II is a fixed lens compact, while the Digilux 3 is a DSLR. The cameras are based on an one-inch (G7X Mark II) and a Four Thirds (Digilux 3) sensor. The Canon has a resolution of 20 megapixels, whereas the Leica provides 7.4 MP.

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

Headline Specifications

Canon G7 X Mark II		Leica Digilux 3
Fixed lens compact camera		Digital single lens reflex
24-100mm f/1.8-2.8		Four Thirds lenses
20 MP – 1" sensor		7.4 MP – Four Thirds sensor
1080/60p Video		no Video
ISO 125-12,800 (125 - 25,600)		ISO 100-1,600
No viewfinder, LCD framing		Optical viewfinder
3.0" LCD – 1040k dots		2.5" LCD – 207k dots
Tilting touchscreen		Fixed screen (not touch-sensitive)
8 shutter flaps per second		3 shutter flaps per second
265 shots per battery charge		750 shots per battery charge
106 x 61 x 42 mm, 319 g		146 x 87 x 77 mm, 606 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot G7 X Mark II and the Leica Digilux 3? 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 Canon G7 X Mark II and the Leica Digilux 3 are illustrated in the side-by-side display below. 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 width, height and depth dimensions are rounded to the nearest millimeter.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Leica Digilux 3 is considerably larger (96 percent) than the Canon G7 X Mark II. In this context, it is worth noting that neither the G7X Mark II nor the Digilux 3 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G7X Mark II has a lens built in, whereas the Digilux 3 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 Digilux 3 and their specifications in the Four Thirds Lens Catalog.

The power pack in the G7X Mark II can be charged via the USB port, so that it is not always necessary to take the battery charger along 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 (USD)	Street Price
1.		Canon G7 X Mark II	106 mm	61 mm	42 mm	319 g	265	n	Feb 2016	699	ebay.com
2.		Leica Digilux 3	146 mm	87 mm	77 mm	606 g	750	n	Sep 2006	1,499	ebay.com
3.		Canon G7 X Mark III	105 mm	61 mm	41 mm	304 g	235	n	Jul 2019	749	amazon.com
4.		Canon G5 X	112 mm	76 mm	44 mm	353 g	210	n	Oct 2015	799	ebay.com
5.		Canon G9 X	98 mm	58 mm	31 mm	209 g	220	n	Oct 2015	529	ebay.com
6.		Canon M3	111 mm	68 mm	44 mm	366 g	250	n	Feb 2015	679	ebay.com
7.		Canon G7 X	103 mm	60 mm	40 mm	304 g	210	n	Sep 2014	699	ebay.com
8.		Olympus E-330	140 mm	87 mm	72 mm	637 g	750	n	Jan 2006	999	ebay.com
9.		Olympus E-500	130 mm	95 mm	66 mm	479 g	750	n	Sep 2005	599	ebay.com
10.		Olympus E-300	147 mm	85 mm	64 mm	624 g	750	n	Sep 2004	799	ebay.com
11.		Panasonic LX10	106 mm	60 mm	42 mm	310 g	260	n	Sep 2016	699	amazon.com
12.		Panasonic L10	135 mm	96 mm	78 mm	556 g	450	n	Aug 2007	599	ebay.com
13.		Panasonic L1	146 mm	87 mm	64 mm	606 g	750	n	Feb 2006	999	ebay.com
14.		Sony RX100 V	102 mm	58 mm	41 mm	299 g	220	n	Oct 2016	999	ebay.com
15.		Sony RX100 IV	102 mm	58 mm	41 mm	298 g	280	n	Jun 2015	999	ebay.com
16.		Sony RX100 III	102 mm	58 mm	41 mm	290 g	320	n	May 2014	799	ebay.com
17.		Sony RX100 II	102 mm	58 mm	38 mm	281 g	350	n	Jun 2013	749	ebay.com
Note: 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 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 G7X Mark II was launched at a lower price than the Digilux 3, 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.

Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants 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. 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Canon G7 X Mark II features an one-inch sensor and the Leica Digilux 3 a Four Thirds sensor. The sensor area in the Digilux 3 is 94 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.7 and 2.0. The sensor in the G7X Mark II has a native 3:2 aspect ratio, while the one in the Digilux 3 offers a 4:3 aspect.

Despite having a smaller sensor, the Canon G7 X Mark II offers a higher resolution of 20 megapixels, compared with 7.4 MP of the Leica Digilux 3. 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 5.51μm for the Digilux 3). However, it should be noted that the G7X Mark II is much more recent (by 9 years and 5 months) than the Digilux 3, 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 Canon G7 X Mark II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G7X Mark II 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 Leica Digilux 3 are 15.7 x 11.8 inches or 39.8 x 29.9 cm for good quality, 12.5 x 9.4 inches or 31.9 x 23.9 cm for very good quality, and 10.5 x 7.8 inches or 26.6 x 19.9 cm for excellent quality prints.

The Canon PowerShot G7 X Mark II has a native sensitivity range from ISO 125 to ISO 12800, which can be extended to ISO 125-25600. The corresponding ISO settings for the Leica Digilux 3 are ISO 100 to ISO 1600 (no boost).

In terms of underlying technology, the G7X Mark II is build around a BSI-CMOS sensor, while the Digilux 3 uses a 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.

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. 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.		Canon G7 X Mark II	1-inch	20.0	5472	3648	1080/60p	21.8	11.9	260	62
2.		Leica Digilux 3	Four Thirds	7.4	3136	2352	none	21.0	10.6	127	53
3.		Canon G7 X Mark III	1-inch	20.0	5472	3648	4K/30p	22.2	12.4	583	65
4.		Canon G5 X	1-inch	20.0	5472	3648	1080/60p	21.4	12.3	471	62
5.		Canon G9 X	1-inch	20.0	5472	3648	1080/60p	21.5	12.3	495	63
6.		Canon M3	APS-C	24.0	6000	4000	1080/30p	22.8	11.8	1169	72
7.		Canon G7 X	1-inch	20.0	5472	3648	1080/60p	23.0	12.7	556	71
8.		Olympus E-330	Four Thirds	7.4	3136	2352	none	20.8	10.4	73	52
9.		Olympus E-500	Four Thirds	8.0	3264	2448	none	20.7	10.3	45	51
10.		Olympus E-300	Four Thirds	8.0	3264	2448	none	20.4	10.1	-40	48
11.		Panasonic LX10	1-inch	20.0	5472	3648	4K/30p	22.8	12.5	581	70
12.		Panasonic L10	Four Thirds	10.0	3648	2736	none	21.3	10.8	429	55
13.		Panasonic L1	Four Thirds	7.4	3136	2352	none	20.8	10.4	80	52
14.		Sony RX100 V	1-inch	20.0	5472	3648	4K/30p	22.8	12.4	586	70
15.		Sony RX100 IV	1-inch	20.0	5472	3648	4K/30p	22.8	12.6	591	70
16.		Sony RX100 III	1-inch	20.0	5472	3648	1080/60p	22.4	12.3	495	67
17.		Sony RX100 II	1-inch	20.0	5472	3648	1080/60p	22.5	12.4	483	67
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. The G7X Mark II indeed provides movie recording capabilities, while the Digilux 3 does not. The highest resolution format that the G7X Mark II can use is 1080/60p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the Digilux 3 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the G7X Mark II relies on live view and the rear LCD for framing. The following table reports on some other key feature differences and similarities of the Canon G7 X Mark II, the Leica Digilux 3, and comparable 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.		Canon G7 X Mark II	none	n	3.0 / 1040	tilting	Y	1/2000s	8.0/s	Y	Y
2.		Leica Digilux 3	optical	n	2.5 / 207	fixed	n	1/4000s	3.0/s	Y	n
3.		Canon G7 X Mark III	none	n	3.0 / 1040	tilting	Y	1/2000s	30/s	Y	Y
4.		Canon G5 X	2360	n	3.0 / 1040	swivel	Y	1/2000s	5.9/s	Y	Y
5.		Canon G9 X	none	n	3.0 / 1040	fixed	Y	1/2000s	6.0/s	Y	Y
6.		Canon M3	optional	n	3.0 / 1040	tilting	Y	1/4000s	4.2/s	Y	n
7.		Canon G7 X	none	n	3.0 / 1040	tilting	Y	1/2000s	6.5/s	Y	Y
8.		Olympus E-330	optical	n	2.5 / 215	tilting	n	1/4000s	3.0/s	Y	n
9.		Olympus E-500	optical	n	2.5 / 215	fixed	n	1/4000s	2.5/s	Y	n
10.		Olympus E-300	optical	n	1.8 / 134	fixed	n	1/4000s	2.5/s	Y	n
11.		Panasonic LX10	none	n	3.0 / 1040	tilting	Y	1/4000s	10.0/s	Y	Y
12.		Panasonic L10	optical	n	2.5 / 207	swivel	n	1/4000s	3.0/s	Y	n
13.		Panasonic L1	optical	n	2.5 / 207	fixed	n	1/4000s	3.0/s	Y	n
14.		Sony RX100 V	2359	n	3.0 / 1229	tilting	n	1/2000s	24.0/s	Y	Y
15.		Sony RX100 IV	2359	n	3.0 / 1228	tilting	n	1/2000s	16.0/s	Y	Y
16.		Sony RX100 III	1440	n	3.0 / 1229	tilting	n	1/2000s	10.0/s	Y	Y
17.		Sony RX100 II	optional	n	3.0 / 1229	tilting	n	1/2000s	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 G7X Mark II has a touchscreen, while the Digilux 3 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The Canon G7 X Mark II 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 G7X Mark II and the Digilux 3 write their files to SDXC cards. The G7X Mark II supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the Digilux 3 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 Canon PowerShot G7 X Mark II and Leica Digilux 3 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.		Canon G7 X Mark II	-	stereo / mono	-	-	micro	2.0	Y	Y	-
2.		Leica Digilux 3	Y	stereo / mono	-	-	-	2.0	-	-	-
3.		Canon G7 X Mark III	-	stereo / mono	Y	-	micro	3.1	Y	-	Y
4.		Canon G5 X	Y	stereo / mono	-	-	mini	2.0	Y	Y	-
5.		Canon G9 X	-	stereo / mono	-	-	micro	2.0	Y	Y	-
6.		Canon M3	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
7.		Canon G7 X	-	stereo / mono	-	-	micro	2.0	Y	Y	-
8.		Olympus E-330	Y	- / -	-	-	-	2.0	-	-	-
9.		Olympus E-500	Y	- / -	-	-	-	2.0	-	-	-
10.		Olympus E-300	Y	- / -	-	-	-	2.0	-	-	-
11.		Panasonic LX10	-	stereo / mono	-	-	micro	2.0	Y	-	-
12.		Panasonic L10	Y	- / -	-	-	-	2.0	-	-	-
13.		Panasonic L1	Y	- / -	-	-	-	2.0	-	-	-
14.		Sony RX100 V	-	stereo / mono	-	-	micro	2.0	Y	Y	-
15.		Sony RX100 IV	-	stereo / mono	-	-	micro	2.0	Y	Y	-
16.		Sony RX100 III	-	stereo / mono	-	-	micro	2.0	Y	Y	-
17.		Sony RX100 II	Y	stereo / mono	-	-	micro	2.0	Y	Y	-

It is notable that the G7X Mark II offers wifi support, while the Digilux 3 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Both the G7X Mark II and the Digilux 3 have been discontinued, but can regularly be found used on ebay. The G7X Mark II was replaced by the Canon G7 X Mark III, while the Digilux 3 does not have a direct successor. Further information on the features and operation of the G7X Mark II and Digilux 3 can be found, respectively, in the Canon G7 X Mark II Manual (free pdf) or the online Leica Digilux 3 Manual.

Review summary

So how do things add up? Is the Canon G7 X Mark II better than the Leica Digilux 3 or vice versa? Below is a summary of the relative strengths of each of the two contestants.

Arguments in favor of the Canon PowerShot G7 X Mark II:

• More detail: Offers more megapixels (20 vs 7.4MP) with a 68% higher linear resolution.
• Broader imaging potential: Can record not only still images but also 1080/60p movies.
• Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
• More detailed LCD: Has a higher resolution rear screen (1040k vs 207k dots).
• More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
• Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• Faster burst: Shoots at higher frequency (8 vs 3 flaps/sec) to capture the decisive moment.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• Ready to shoot: Comes with a built-in lens, while the Digilux 3 requires a separate lens.
• More compact: Is smaller (106x61mm vs 146x87mm) and thus needs less room in the bag.
• Less heavy: Is lighter even though it comes with a built-in lens (unlike the Digilux 3).
• Easier travel charging: Can be conveniently charged via its USB port.
• Sharper images: Has hand-shake reducing image stabilization built-in.
• 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 affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More modern: Reflects 9 years and 5 months of technical progress since the Digilux 3 launch.

Reasons to prefer the Leica Digilux 3:

• Easier framing: Has an optical viewfinder for image composition and settings control.
• Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
• More flexible: Makes it possible to change lenses and thus to use specialty optics.
• Longer lasting: Gets more shots (750 versus 265) out of a single battery charge.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• More prestigious: Has the Leica luxury appeal, which ensures a high resale value.
• More heavily discounted: Has been around for much longer (launched in September 2006).

If the count of relative strengths (bullet points above) is taken as a measure, the G7X Mark II is the clear winner of the match-up (19 : 7 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 Canon G7 X Mark II and the Leica Digilux 3 place the cameras among the top in their class? Find out in the latest Best Travel-Zoom Camera and Best DSLR 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the G7X Mark II or the Digilux 3. 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 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 (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.		Canon G7 X Mark II	4.5/5	+ +	..	81/100	4.5/5	4.5/5	Feb 2016	699	ebay.com
2.		Leica Digilux 3	..	..	..	..	..	..	Sep 2006	1,499	ebay.com
3.		Canon G7 X Mark III	..	+ +	4/5	81/100	4/5	..	Jul 2019	749	amazon.com
4.		Canon G5 X	5/5	+ +	..	78/100	4.5/5	4.5/5	Oct 2015	799	ebay.com
5.		Canon G9 X	3.5/5	+ +	..	..	4.5/5	4.5/5	Oct 2015	529	ebay.com
6.		Canon M3	4/5	o	..	75/100	4.5/5	4/5	Feb 2015	679	ebay.com
7.		Canon G7 X	4/5	+ +	..	77/100	4.5/5	4.5/5	Sep 2014	699	ebay.com
8.		Olympus E-330	..	..	..	+	o	..	Jan 2006	999	ebay.com
9.		Olympus E-500	..	76/100	..	+ +	..	..	Sep 2005	599	ebay.com
10.		Olympus E-300	..	..	..	+	o	4.5/5	Sep 2004	799	ebay.com
11.		Panasonic LX10	..	+ +	4/5	81/100	4/5	4.5/5	Sep 2016	699	amazon.com
12.		Panasonic L10	..	85/100	..	+	3.5/5	4/5	Aug 2007	599	ebay.com
13.		Panasonic L1	..	85/100	..	+	..	3.5/5	Feb 2006	999	ebay.com
14.		Sony RX100 V	4.5/5	+ +	..	83/100	4/5	4.5/5	Oct 2016	999	ebay.com
15.		Sony RX100 IV	4.5/5	+ +	..	85/100	4/5	4.5/5	Jun 2015	999	ebay.com
16.		Sony RX100 III	5/5	+ +	..	82/100	4.5/5	5/5	May 2014	799	ebay.com
17.		Sony RX100 II	5/5	+ +	..	79/100	4.5/5	4.5/5	Jun 2013	749	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, 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. 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

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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