Leica M10-R vs Leica SL

The Leica M10-R and the Leica SL (Typ 601) are two enthusiast cameras that were announced, respectively, in July 2020 and October 2015. The M10-R is a rangefinder-focusing mirrorless, while the Leica SL is a mirrorless interchangeable lens camera. Both cameras are equipped with a full frame sensor. The M10-R has a resolution of 40.9 megapixels, whereas the Leica SL provides 24 MP.

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

Headline Specifications

Leica M10-R		Leica SL
Rangefinder camera		Mirrorless system camera
Leica M mount lenses		Leica L mount lenses
40.9 MP – Full Frame sensor		24 MP – Full Frame sensor
no Video		4K/30p Video
ISO 100-50,000		ISO 50-50,000
Optical viewfinder		Electronic viewfinder (4400k dots)
3.0" LCD – 1037k dots		3.0" LCD – 1040k dots
Fixed touchscreen		Fixed touchscreen
4.5 shutter flaps per second		11 shutter flaps per second
Weathersealed body		Weathersealed body
210 shots per battery charge		400 shots per battery charge
139 x 80 x 39 mm, 660 g		147 x 104 x 39 mm, 847 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Leica M10-R and the Leica SL (Typ 601)? 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 Leica M10-R and the Leica SL are illustrated 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 size dimensions are rounded to the nearest millimeter.

The M10-R can be obtained in two different colors (black, silver), while the Leica SL 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 Leica SL is notably larger (37 percent) than the Leica M10-R. Moreover, the Leica SL is markedly heavier (28 percent) than the M10-R. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the M10-R gets 210 shots out of its Leica BP-SCL5 battery, while the Leica SL can take 400 images on a single charge of its Leica BP-SCL4 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.		Leica M10-R	139 mm	80 mm	39 mm	660 g	210	Y	Jul 2020	8,295	ebay.com
2.		Leica SL	147 mm	104 mm	39 mm	847 g	400	Y	Oct 2015	7,450	ebay.com
3.		Canon 80D	139 mm	105 mm	79 mm	730 g	960	Y	Feb 2016	1,199	ebay.com
4.		Leica M Typ 240	139 mm	80 mm	42 mm	680 g	500	Y	Sep 2012	6,950	ebay.com
5.		Leica M-E Typ 240	139 mm	80 mm	42 mm	680 g	500	Y	Jun 2019	3,999	ebay.com
6.		Leica M Typ 262	139 mm	80 mm	42 mm	680 g	400	Y	Nov 2015	5,195	ebay.com
7.		Leica M9	139 mm	80 mm	37 mm	585 g	550	n	Sep 2009	7,999	ebay.com
8.		Leica M10	139 mm	80 mm	39 mm	660 g	210	Y	Jan 2017	6,595	ebay.com
9.		Leica M10-P	139 mm	80 mm	39 mm	660 g	210	Y	Aug 2018	7,995	ebay.com
10.		Leica M11	139 mm	80 mm	39 mm	640 g	700	Y	Jan 2022	8,995	amazon.com
11.		Leica Q2	130 mm	80 mm	92 mm	718 g	370	Y	Mar 2019	4,995	amazon.com
12.		Leica SL2	146 mm	107 mm	42 mm	953 g	370	Y	Nov 2019	5,999	amazon.com
13.		Leica SL2-S	146 mm	107 mm	83 mm	931 g	510	Y	Dec 2020	4,895	amazon.com
14.		Nikon D750	141 mm	113 mm	78 mm	750 g	1230	Y	Sep 2014	2,299	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

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. The Leica SL was somewhat cheaper (by 10 percent) than the M10-R at launch, but both cameras fall into the same price category. 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 tend to be associated with larger, more expensive camera bodies and lenses.

Both cameras under consideration feature a full frame sensor, but their sensors differ slightly in size. The sensor area in the Leica SL is 1 percent bigger. They nevertheless have the same format factor of 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Despite having a slightly smaller sensor, the Leica M10-R offers a higher resolution of 40.9 megapixels, compared with 24 MP of the Leica SL. 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 4.57μm versus 6.00μm for the Leica SL). However, it should be noted that the M10-R is much more recent (by 4 years and 8 months) than the Leica SL, 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 neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

The resolution advantage of the Leica M10-R implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the M10-R for good quality output (200 dots per inch) amounts to 39.3 x 26 inches or 99.9 x 66 cm, for very good quality (250 dpi) 31.5 x 20.8 inches or 79.9 x 52.8 cm, and for excellent quality (300 dpi) 26.2 x 17.3 inches or 66.6 x 44 cm. The corresponding values for the Leica SL are 30 x 20 inches or 76.2 x 50.8 cm for good quality, 24 x 16 inches or 61 x 40.6 cm for very good quality, and 20 x 13.3 inches or 50.8 x 33.9 cm for excellent quality prints.

The Leica M10-R has a native sensitivity range from ISO 100 to ISO 50000. The corresponding ISO settings for the Leica SL (Typ 601) are ISO 50 to ISO 50000 (no boost).

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 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Leica M10-R	Full Frame	40.9	7864	5200	none	25.3	14.3	2924	95
2.		Leica SL	Full Frame	24.0	6000	4000	4K/30p	25.0	13.4	1821	88
3.		Canon 80D	APS-C	24.0	6000	4000	1080/60p	23.6	13.2	1135	79
4.		Leica M Typ 240	Full Frame	23.7	5952	3976	1080/25p	24.0	13.3	1860	84
5.		Leica M-E Typ 240	Full Frame	23.7	5952	3976	1080/25p	25.2	14.2	2821	94
6.		Leica M Typ 262	Full Frame	23.7	5952	3976	none	24.8	13.7	2478	90
7.		Leica M9	Full Frame	18.1	5212	3472	none	22.5	11.7	884	69
8.		Leica M10	Full Frame	23.8	5952	3992	none	24.4	13.2	2133	86
9.		Leica M10-P	Full Frame	23.8	5952	3992	none	25.1	14.1	2739	93
10.		Leica M11	Full Frame	60.3	9528	6328	none	26.3	14.8	3376	100
11.		Leica Q2	Full Frame	46.7	8368	5584	4K/30p	26.4	13.5	2491	96
12.		Leica SL2	Full Frame	46.7	8368	5584	4K/60p	25.3	14.3	2866	95
13.		Leica SL2-S	Full Frame	24.0	6000	4000	4K/60p	25.2	14.1	3504	95
14.		Nikon D750	Full Frame	24.2	6016	4016	1080/60p	24.8	14.5	2956	93
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 Leica SL indeed provides for movie recording, while the M10-R does not. The highest resolution format that the Leica SL can use is 4K/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the Leica SL has an electronic viewfinder (4400k dots), while the M10-R 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 Leica SL has a higher magnification than the one of the M10-R (0.80x vs 0.73x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Leica M10-R and Leica SL 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.		Leica M10-R	optical	n	3.0 / 1037	fixed	Y	1/4000s	4.5/s	n	n
2.		Leica SL	4400	Y	3.0 / 1040	fixed	Y	1/8000s	11.0/s	n	n
3.		Canon 80D	optical	Y	3.0 / 1040	swivel	Y	1/8000s	7.0/s	Y	n
4.		Leica M Typ 240	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	n	n
5.		Leica M-E Typ 240	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	n	n
6.		Leica M Typ 262	optical	n	3.0 / 921	fixed	n	1/4000s	3.0/s	n	n
7.		Leica M9	optical	n	2.5 / 230	fixed	n	1/4000s	2.0/s	n	n
8.		Leica M10	optical	n	3.0 / 1037	fixed	n	1/4000s	5.0/s	n	n
9.		Leica M10-P	optical	n	3.0 / 1037	fixed	Y	1/4000s	5.0/s	n	n
10.		Leica M11	optical	n	3.0 / 2333	fixed	Y	1/4000s	4.5/s	n	n
11.		Leica Q2	3680	n	3.0 / 1040	fixed	Y	1/2000s	10.0/s	n	Y
12.		Leica SL2	5760	Y	3.2 / 2100	fixed	Y	1/8000s	10.0/s	n	Y
13.		Leica SL2-S	5760	Y	3.2 / 2100	fixed	Y	1/8000s	20.0/s	n	Y
14.		Nikon D750	optical	Y	3.2 / 1229	tilting	n	1/4000s	6.0/s	Y	n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the Leica SL, but is missing on the M10-R 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 Leica SL 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 M10-R and the Leica SL both have 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 M10-R and the Leica SL write their files to SDXC cards. The Leica SL features dual card slots, which can be very useful in case a memory card fails. In contrast, the M10-R only has one slot. The Leica SL supports UHS-II cards (on its first slot), while the M10-R can use UHS-I 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 M10-R and Leica SL (Typ 601) 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 M10-R	Y	- / -	-	-	-	-	Y	-	-
2.		Leica SL	Y	stereo / mono	Y	Y	full	3.0	Y	-	-
3.		Canon 80D	Y	stereo / mono	Y	Y	mini	2.0	Y	Y	-
4.		Leica M Typ 240	Y	stereo / mono	-	-	-	2.0	-	-	-
5.		Leica M-E Typ 240	Y	mono / -	-	-	-	2.0	-	-	-
6.		Leica M Typ 262	Y	- / -	-	-	-	2.0	-	-	-
7.		Leica M9	Y	- / -	-	-	-	2.0	-	-	-
8.		Leica M10	Y	- / -	-	-	-	-	Y	-	-
9.		Leica M10-P	Y	- / -	-	-	-	-	Y	-	-
10.		Leica M11	Y	- / -	-	-	-	3.2	Y	-	Y
11.		Leica Q2	Y	stereo / mono	-	-	-	-	Y	-	Y
12.		Leica SL2	Y	stereo / mono	Y	Y	full	3.1	Y	-	Y
13.		Leica SL2-S	Y	stereo / mono	Y	Y	full	3.2	Y	-	Y
14.		Nikon D750	Y	stereo / mono	Y	Y	mini	2.0	Y	-	-

Studio photographers will appreciate that the Leica SL (unlike the M10-R) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Travel and landscape photographers will find it useful that the Leica SL has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the M10-R and the Leica SL have been discontinued, but can regularly be found used on ebay. The Leica SL was replaced by the Leica SL2, while the M10-R does not have a direct successor. Further information on the features and operation of the M10-R and Leica SL can be found, respectively, in the Leica M10-R Manual (free pdf) or the online Leica SL Manual.

Review summary

So what conclusions can be drawn? Is the Leica M10-R better than the Leica SL or vice versa? The listing below highlights the relative strengths of the two models.

Reasons to prefer the Leica M10-R:

• More detail: Offers more megapixels (40.9 vs 24MP) with a 31% higher linear resolution.
• Brighter framing: Features an optical viewfinder for clear, lag-free composition.
• More compact: Is smaller (139x80mm vs 147x104mm) and thus needs less room in the bag.
• Less heavy: Is lighter (by 187g or 22 percent) and hence easier to carry around.
• More modern: Reflects 4 years and 8 months of technical progress since the Leica SL launch.

Advantages of the Leica SL (Typ 601):

• Broader imaging potential: Can capture not only stills but also 4K/30p video.
• More framing info: Has an electronic viewfinder that displays shooting data.
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.80x vs 0.73x).
• Easier setting verification: Features a control panel on top to check shooting parameters.
• Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
• Faster burst: Shoots at higher frequency (11 vs 4.5 flaps/sec) to capture the decisive moment.
• Less disturbing: Has an electronic shutter option for completely silent shooting.
• Longer lasting: Gets more shots (400 versus 210) out of a single battery charge.
• Easier geotagging: Features an internal GPS sensor to log localization data.
• Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
• Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
• Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
• More heavily discounted: Has been around for much longer (launched in October 2015).

If the count of individual advantages (bullet points above) is taken as a guide, the Leica SL is the clear winner of the contest (13 : 5 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 the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the M10-R or the Leica SL. 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 hands-on reviews by experts 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 (USD)	Street Price
1.		Leica M10-R	4.5/5	..	4/5	..	..	4/5	Jul 2020	8,295	ebay.com
2.		Leica SL	4/5	..	4/5	84/100	4.5/5	4/5	Oct 2015	7,450	ebay.com
3.		Canon 80D	4/5	+ +	4.5/5	84/100	4.5/5	4.5/5	Feb 2016	1,199	ebay.com
4.		Leica M Typ 240	4/5	..	..	..	4/5	..	Sep 2012	6,950	ebay.com
5.		Leica M-E Typ 240	..	..	..	..	..	..	Jun 2019	3,999	ebay.com
6.		Leica M Typ 262	..	..	..	..	..	..	Nov 2015	5,195	ebay.com
7.		Leica M9	..	..	..	..	4.5/5	..	Sep 2009	7,999	ebay.com
8.		Leica M10	4.5/5	..	..	..	4/5	4.5/5	Jan 2017	6,595	ebay.com
9.		Leica M10-P	..	..	3/5	..	..	4/5	Aug 2018	7,995	ebay.com
10.		Leica M11	4.5/5	..	4.5/5	..	4.5/5	4.5/5	Jan 2022	8,995	amazon.com
11.		Leica Q2	..	..	4.5/5	84/100	4.5/5	4/5	Mar 2019	4,995	amazon.com
12.		Leica SL2	4/5	..	4.5/5	..	4.5/5	4/5	Nov 2019	5,999	amazon.com
13.		Leica SL2-S	4/5	..	4/5	..	4.5/5	4.5/5	Dec 2020	4,895	amazon.com
14.		Nikon D750	5/5	+ +	4/5	90/100	4.5/5	4.5/5	Sep 2014	2,299	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. 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. 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

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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