Leica C-LUX vs M9

The Leica C-LUX and the Leica M9 are two digital cameras that were revealed to the public, respectively, in June 2018 and September 2009. The C-LUX is a fixed lens compact, while the M9 is a rangefinder-focusing mirrorless. The cameras are based on an one-inch (C-LUX) and a full frame (M9) sensor. The C-LUX has a resolution of 20 megapixels, whereas the M9 provides 18.1 MP.

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

Headline Specifications

Leica C-LUX		Leica M9
Fixed lens compact camera		Rangefinder camera
24-360mm f/3.3-6.4		Leica M mount lenses
20 MP – 1" sensor		18.1 MP – Full Frame sensor
4K/30p Video		no Video
ISO 125-12,800 (80 - 25,600)		ISO 80-2,500
Electronic viewfinder (2330k dots)		Optical viewfinder
3.0" LCD – 1240k dots		2.5" LCD – 230k dots
Fixed touchscreen		Fixed screen (not touch-sensitive)
10 shutter flaps per second		2 shutter flaps per second
370 shots per battery charge		550 shots per battery charge
113 x 67 x 46 mm, 340 g		139 x 80 x 37 mm, 585 g

Check C-LUX offers at
ebay.com
Check M9 offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Leica C-LUX and the Leica M9? 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 Leica C-LUX and the Leica M9. 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 C-LUX can be obtained in two different colors (gold, blue), while the M9 is also available in two color-versions, but different ones (black, silver).

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Leica M9 is considerably larger (47 percent) than the Leica C-LUX. In this context, it is worth noting that neither the C-LUX nor the M9 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the C-LUX has a lens built in, whereas the M9 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 M9 and their specifications in the Leica M Lens Catalog.

Concerning battery life, the C-LUX gets 370 shots out of its Leica BP-DC15 battery, while the M9 can take 550 images on a single charge of its Leica BLI-312 power pack. The power pack in the C-LUX can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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	Street Price
1.		Leica C-LUX	113 mm	67 mm	46 mm	340 g	370	n	Jun 2018	EUR 970	ebay.com
2.		Leica M9	139 mm	80 mm	37 mm	585 g	550	n	Sep 2009	EUR 5 499	ebay.com
3.		Canon 550D	129 mm	98 mm	62 mm	530 g	440	n	Feb 2010	EUR 649	ebay.com
4.		Canon G5 X Mark II	111 mm	61 mm	46 mm	340 g	230	n	Jul 2019	EUR 929	ebay.com
5.		Fujifilm X-E3	121 mm	74 mm	43 mm	337 g	350	n	Sep 2017	EUR 899	ebay.com
6.		Fujifilm X-T20	118 mm	83 mm	41 mm	383 g	350	n	Jan 2017	EUR 799	ebay.com
7.		Leica CL	131 mm	78 mm	45 mm	403 g	220	n	Nov 2017	EUR 2 490	ebay.com
8.		Leica D-LUX 7	115 mm	66 mm	65 mm	392 g	300	n	Nov 2018	EUR 1 149	ebay.com
9.		Leica M Typ 240	139 mm	80 mm	42 mm	680 g	500	Y	Sep 2012	EUR 6 199	ebay.com
10.		Leica M8	139 mm	80 mm	37 mm	591 g	550	n	Sep 2006	EUR 4 199	ebay.com
11.		Leica M10	139 mm	80 mm	39 mm	660 g	210	Y	Jan 2017	EUR 6 499	ebay.com
12.		Leica TL2	134 mm	69 mm	33 mm	399 g	250	n	Jul 2017	EUR 1 949	ebay.com
13.		Leica V-LUX 5	136 mm	97 mm	131 mm	812 g	350	n	Jul 2019	EUR 1 199	amazon.com
14.		Leica X Vario	133 mm	73 mm	95 mm	680 g	450	n	Jun 2013	EUR 2 449	ebay.com
15.		Panasonic LX100 II	115 mm	66 mm	65 mm	392 g	300	n	Aug 2018	EUR 949	ebay.com
16.		Sony RX100 VI	102 mm	58 mm	43 mm	301 g	240	n	Jun 2018	EUR 1 299	ebay.com
17.		Sony RX100 VII	102 mm	58 mm	43 mm	302 g	260	n	Jul 2019	EUR 1 299	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

Any camera decision will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The C-LUX was launched at a lower price than the M9, 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. 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. 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 associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Leica C-LUX features an one-inch sensor and the Leica M9 a full frame sensor. The sensor area in the M9 is 645 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.7 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Despite having a smaller sensor, the Leica C-LUX offers a higher resolution of 20 megapixels, compared with 18.1 MP of the Leica M9. 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 6.91μm for the M9). However, it should be noted that the C-LUX is much more recent (by 8 years and 9 months) than the M9, 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 M9 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Leica C-LUX implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the C-LUX 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 M9 are 26.1 x 17.4 inches or 66.2 x 44.1 cm for good quality, 20.8 x 13.9 inches or 53 x 35.3 cm for very good quality, and 17.4 x 11.6 inches or 44.1 x 29.4 cm for excellent quality prints.

The Leica C-LUX has a native sensitivity range from ISO 125 to ISO 12800, which can be extended to ISO 80-25600. The corresponding ISO settings for the Leica M9 are ISO 80 to ISO 2500 (no boost).

In terms of underlying technology, the C-LUX is build around a CMOS sensor, while the M9 uses a CCD 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.

For many cameras, data on sensor performance has been reported by DXO Mark. 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.		Leica C-LUX	1-inch	20.0	5472	3648	4K/30p	22.1	12.3	481	64
2.		Leica M9	Full Frame	18.1	5212	3472	none	22.5	11.7	884	69
3.		Canon 550D	APS-C	17.9	5184	3456	1080/30p	22.1	11.5	784	66
4.		Canon G5 X Mark II	1-inch	20.0	5472	3648	4K/30p	22.2	12.4	583	65
5.		Fujifilm X-E3	APS-C	24.0	6000	4000	4K/30p	23.9	13.3	1764	82
6.		Fujifilm X-T20	APS-C	24.0	6000	4000	4K/30p	23.9	13.2	1704	81
7.		Leica CL	APS-C	24.1	6014	4014	4K/30p	24.0	13.3	1788	82
8.		Leica D-LUX 7	Four Thirds	16.8	4736	3552	4K/30p	22.9	12.8	1002	72
9.		Leica M Typ 240	Full Frame	23.7	5952	3976	1080/25p	24.0	13.3	1860	84
10.		Leica M8	APS-H	10.4	3936	2630	none	21.1	11.3	663	59
11.		Leica M10	Full Frame	23.8	5952	3992	none	24.4	13.2	2133	86
12.		Leica TL2	APS-C	24.1	6014	4014	4K/30p	23.9	13.3	1753	82
13.		Leica V-LUX 5	1-inch	20.0	5472	3648	4K/30p	22.2	12.4	584	65
14.		Leica X Vario	APS-C	16.1	4928	3272	1080/30p	23.4	12.7	1320	78
15.		Panasonic LX100 II	Four Thirds	16.8	4736	3552	4K/30p	22.8	12.7	979	72
16.		Sony RX100 VI	1-inch	20.0	5472	3648	4K/30p	22.1	12.3	478	64
17.		Sony RX100 VII	1-inch	20.0	5472	3648	4K/30p	21.8	12.4	418	63
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 C-LUX indeed provides movie recording capabilities, while the M9 does not. The highest resolution format that the C-LUX can use is 4K/30p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the C-LUX has an electronic viewfinder (2330k dots), while the M9 has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the M9 has a higher magnification than the one of the C-LUX (0.68x vs 0.53x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Leica C-LUX and Leica M9 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.		Leica C-LUX	2330	n	3.0 / 1240	fixed	Y	1/2000s	10.0/s	Y	Y
2.		Leica M9	optical	n	2.5 / 230	fixed	n	1/4000s	2.0/s	n	n
3.		Canon 550D	optical	n	3.0 / 1040	fixed	n	1/4000s	3.7/s	Y	n
4.		Canon G5 X Mark II	2360	n	3.0 / 1040	tilting	Y	1/2000s	30/s	Y	Y
5.		Fujifilm X-E3	2360	n	3.0 / 1040	fixed	Y	1/4000s	8.0/s	n	n
6.		Fujifilm X-T20	2360	n	3.0 / 1040	tilting	Y	1/4000s	8.0/s	Y	n
7.		Leica CL	2360	Y	3.0 / 1040	fixed	Y	1/8000s	10.0/s	n	n
8.		Leica D-LUX 7	2764	n	3.0 / 1240	fixed	Y	1/4000s	11.0/s	n	Y
9.		Leica M Typ 240	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	n	n
10.		Leica M8	optical	n	2.5 / 230	fixed	n	1/8000s	2.0/s	n	n
11.		Leica M10	optical	n	3.0 / 1037	fixed	n	1/4000s	5.0/s	n	n
12.		Leica TL2	optional	n	3.7 / 1230	fixed	Y	1/4000s	7.0/s	n	n
13.		Leica V-LUX 5	2360	n	3.0 / 1240	swivel	Y	1/4000s	12.0/s	Y	Y
14.		Leica X Vario	optional	n	3.0 / 920	fixed	n	1/2000s	5.0/s	Y	n
15.		Panasonic LX100 II	2764	n	3.0 / 1240	fixed	Y	1/4000s	11.0/s	n	Y
16.		Sony RX100 VI	2359	n	3.0 / 1229	tilting	Y	1/2000s	24.0/s	Y	Y
17.		Sony RX100 VII	2359	n	3.0 / 921	tilting	Y	1/2000s	90.0/s	Y	Y
Note: *) 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 C-LUX has one, while the M9 does not. While the built-in flash of the C-LUX 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 C-LUX 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 Leica C-LUX 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 C-LUX and the M9 write their files to SDXC cards. The C-LUX supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the M9 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 Leica C-LUX and Leica M9 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.		Leica C-LUX	-	stereo / mono	-	-	micro	2.0	Y	-	-
2.		Leica M9	Y	- / -	-	-	-	2.0	-	-	-
3.		Canon 550D	Y	stereo / -	Y	-	mini	2.0	-	-	-
4.		Canon G5 X Mark II	-	stereo / mono	-	-	micro	3.1	Y	-	Y
5.		Fujifilm X-E3	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
6.		Fujifilm X-T20	Y	stereo / mono	Y	-	micro	2.0	Y	-	-
7.		Leica CL	Y	stereo / mono	-	-	-	-	Y	-	-
8.		Leica D-LUX 7	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
9.		Leica M Typ 240	Y	stereo / mono	-	-	-	2.0	-	-	-
10.		Leica M8	Y	- / -	-	-	-	2.0	-	-	-
11.		Leica M10	Y	- / -	-	-	-	-	Y	-	-
12.		Leica TL2	Y	stereo / mono	-	-	micro	3.0	Y	-	-
13.		Leica V-LUX 5	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
14.		Leica X Vario	Y	stereo / mono	-	-	mini	2.0	-	-	-
15.		Panasonic LX100 II	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
16.		Sony RX100 VI	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
17.		Sony RX100 VII	-	stereo / mono	Y	-	micro	2.0	Y	Y	Y

It is notable that the C-LUX offers wifi support, while the M9 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Both the C-LUX and the M9 have been discontinued, but can regularly be found used on ebay. The M9 was replaced by the Leica M Typ 240, while the C-LUX does not have a direct successor. Further information on the features and operation of the C-LUX and M9 can be found, respectively, in the Leica C-LUX Manual (free pdf) or the online Leica M9 Manual.

Review summary

So what is the bottom line? Is the Leica C-LUX better than the Leica M9 or vice versa? A synthesis of the relative strong points of each of the models is listed below.

Arguments in favor of the Leica C-LUX:

• More detail: Offers more megapixels (20 vs 18.1MP) with a 5% higher linear resolution.
• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Broader imaging potential: Can record not only still images but also 4K/30p movies.
• More framing info: Has an electronic viewfinder that displays shooting data.
• 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 (1240k vs 230k dots).
• Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
• Faster burst: Shoots at higher frequency (10 vs 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 a lens built-in, whereas the M9 requires a separate lens.
• More compact: Is smaller (113x67mm vs 139x80mm) and thus needs less room in the bag.
• Less heavy: Is lighter even though it comes with a built-in lens (unlike the M9).
• Easier travel charging: Can be conveniently charged via its USB port.
• Sharper images: Has hand-shake reducing image stabilization built-in.
• Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
• 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 affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More modern: Reflects 8 years and 9 months of technical progress since the M9 launch.

Advantages of the Leica M9:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Brighter framing: Features an optical viewfinder for clear, lag-free composition.
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.68x vs 0.53x).
• Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
• More flexible: Takes interchangeable lenses and can thus be used with different optics.
• Longer lasting: Gets more shots (550 versus 370) out of a single battery charge.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• More heavily discounted: Has been around for much longer (launched in September 2009).

If the count of relative strengths (bullet points above) is taken as a measure, the C-LUX is the clear winner of the match-up (20 : 8 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.

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the C-LUX or the M9 perform in practice. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews

This is why hands-on reviews by experts are important. 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	Street Price
1.		Leica C-LUX	..	..	3.5/5	..	4.5/5	4/5	Jun 2018	EUR 970	ebay.com
2.		Leica M9	..	..	..	..	4.5/5	..	Sep 2009	EUR 5 499	ebay.com
3.		Canon 550D	..	+ +	..	77/100	4/5	4.5/5	Feb 2010	EUR 649	ebay.com
4.		Canon G5 X Mark II	4/5	+	4/5	82/100	..	4/5	Jul 2019	EUR 929	ebay.com
5.		Fujifilm X-E3	4.5/5	+	4.5/5	84/100	4.5/5	4.5/5	Sep 2017	EUR 899	ebay.com
6.		Fujifilm X-T20	5/5	+ +	5/5	82/100	5/5	4.5/5	Jan 2017	EUR 799	ebay.com
7.		Leica CL	..	..	4.2/5	..	..	4/5	Nov 2017	EUR 2 490	ebay.com
8.		Leica D-LUX 7	..	..	..	..	..	4.5/5	Nov 2018	EUR 1 149	ebay.com
9.		Leica M Typ 240	4/5	..	..	..	4/5	..	Sep 2012	EUR 6 199	ebay.com
10.		Leica M8	..	..	..	+ +	..	..	Sep 2006	EUR 4 199	ebay.com
11.		Leica M10	4.5/5	..	..	..	4/5	4.5/5	Jan 2017	EUR 6 499	ebay.com
12.		Leica TL2	3.5/5	..	3/5	..	4/5	4/5	Jul 2017	EUR 1 949	ebay.com
13.		Leica V-LUX 5	..	..	..	..	4/5	4/5	Jul 2019	EUR 1 199	amazon.com
14.		Leica X Vario	3/5	..	..	..	4/5	4/5	Jun 2013	EUR 2 449	ebay.com
15.		Panasonic LX100 II	4.5/5	+	4.2/5	82/100	4.5/5	4.5/5	Aug 2018	EUR 949	ebay.com
16.		Sony RX100 VI	4.5/5	+ +	..	83/100	4/5	4.5/5	Jun 2018	EUR 1 299	ebay.com
17.		Sony RX100 VII	4.5/5	..	4/5	..	4/5	5/5	Jul 2019	EUR 1 299	amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated 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 comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

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Other camera comparisons

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