Leica M10-R vs S3

The Leica M10-R and the Leica S3 are two digital cameras that were announced, respectively, in July 2020 and September 2018. The M10-R is a rangefinder-focusing mirrorless camera, while the S3 is a DSLR. The cameras are based on a full frame (M10-R) and a medium format (S3) sensor. The M10-R has a resolution of 40.9 megapixels, whereas the S3 provides 64 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 S3
Rangefinder camera		Digital single lens reflex
Leica M mount lenses		Leica S mount lenses
40.9 MP – Full Frame sensor		64 MP – Medium Format sensor
no Video		4K/24p Video
ISO 100-50,000		ISO 100-50,000
Optical viewfinder		Optical viewfinder
3.0" LCD – 1037k dots		3.0" LCD – 922k dots
Fixed touchscreen		Fixed screen (not touch-sensitive)
4.5 shutter flaps per second		3 shutter flaps per second
Weathersealed body		Weathersealed body
139 x 80 x 39 mm, 660 g		160 x 120 x 80 mm, 1260 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 S3? 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 Leica M10-R and the Leica S3 is provided 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 width, height and depth dimensions are rounded to the nearest millimeter.

The M10-R can be obtained in two different colors (black, silver), while the S3 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 S3 is considerably larger (73 percent) than the Leica M10-R. Moreover, the S3 is substantially heavier (91 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 S3 can take .. images on a single charge of its Leica BP-PRO1 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.		Leica M10-R	139 mm	80 mm	39 mm	660 g	210	Y	Jul 2020	8,295	ebay.com
2.		Leica S3	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2018	18,995	ebay.com
3.		Leica M Typ 240	139 mm	80 mm	42 mm	680 g	500	Y	Sep 2012	6,950	ebay.com
4.		Leica M-E Typ 240	139 mm	80 mm	42 mm	680 g	500	Y	Jun 2019	3,999	ebay.com
5.		Leica M Typ 262	139 mm	80 mm	42 mm	680 g	400	Y	Nov 2015	5,195	ebay.com
6.		Leica M9	139 mm	80 mm	37 mm	585 g	550	n	Sep 2009	7,999	ebay.com
7.		Leica M10	139 mm	80 mm	39 mm	660 g	210	Y	Jan 2017	6,595	ebay.com
8.		Leica M10-P	139 mm	80 mm	39 mm	660 g	210	Y	Aug 2018	7,995	ebay.com
9.		Leica M11	139 mm	80 mm	39 mm	640 g	700	Y	Jan 2022	8,995	amazon.com
10.		Leica Q2	130 mm	80 mm	92 mm	718 g	370	Y	Mar 2019	4,995	amazon.com
11.		Leica S2	160 mm	120 mm	80 mm	1410 g	..	Y	Sep 2008	22,995	ebay.com
12.		Leica S Typ 006	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2012	21,950	ebay.com
13.		Leica S-E Typ 006	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2014	16,900	ebay.com
14.		Leica S Typ 007	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2014	24,490	ebay.com
15.		Leica SL	147 mm	104 mm	39 mm	847 g	400	Y	Oct 2015	7,450	ebay.com
16.		Leica SL2	146 mm	107 mm	42 mm	953 g	370	Y	Nov 2019	5,999	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

The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The M10-R was launched at a markedly lower price (by 56 percent) than the S3, which puts it into a different market segment. 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 imaging sensor is a crucial determinant 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. 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 more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Leica M10-R features a full frame sensor and the Leica S3 a medium format sensor. The sensor area in the S3 is 58 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 0.8. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

With 64MP, the S3 offers a higher resolution than the M10-R (40.9MP), but the S3 nevertheless has marginally larger individual pixels (pixel pitch of 4.59μm versus 4.57μm for the M10-R) due to its larger sensor. However, the M10-R is a somewhat more recent model (by 1 year and 9 months) than the S3, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. 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 S3 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the S3 for good quality output (200 dots per inch) amounts to 49 x 32.7 inches or 124.5 x 83 cm, for very good quality (250 dpi) 39.2 x 26.1 inches or 99.6 x 66.4 cm, and for excellent quality (300 dpi) 32.7 x 21.8 inches or 83 x 55.3 cm. The corresponding values for the Leica M10-R are 39.3 x 26 inches or 99.9 x 66 cm for good quality, 31.5 x 20.8 inches or 79.9 x 52.8 cm for very good quality, and 26.2 x 17.3 inches or 66.6 x 44 cm for excellent quality prints.

The Leica M10-R has a native sensitivity range from ISO 100 to ISO 50000. The Leica S3 offers exactly the same ISO settings.

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.

For many cameras, data on sensor performance has been reported by DXO Mark. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). 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 M10-R	Full Frame	40.9	7864	5200	none	25.3	14.3	2924	95
2.		Leica S3	Medium Format	64.0	9800	6533	4K/24p	25.6	14.4	3143	98
3.		Leica M Typ 240	Full Frame	23.7	5952	3976	1080/25p	24.0	13.3	1860	84
4.		Leica M-E Typ 240	Full Frame	23.7	5952	3976	1080/25p	25.2	14.2	2821	94
5.		Leica M Typ 262	Full Frame	23.7	5952	3976	none	24.8	13.7	2478	90
6.		Leica M9	Full Frame	18.1	5212	3472	none	22.5	11.7	884	69
7.		Leica M10	Full Frame	23.8	5952	3992	none	24.4	13.2	2133	86
8.		Leica M10-P	Full Frame	23.8	5952	3992	none	25.1	14.1	2739	93
9.		Leica M11	Full Frame	60.3	9528	6328	none	26.3	14.8	3376	100
10.		Leica Q2	Full Frame	46.7	8368	5584	4K/30p	26.4	13.5	2491	96
11.		Leica S2	Medium Format	37.5	7500	5000	none	23.9	12.5	2224	82
12.		Leica S Typ 006	Medium Format	37.5	7500	5000	none	23.9	12.2	824	76
13.		Leica S-E Typ 006	Medium Format	37.5	7500	5000	none	25.1	13.7	2763	93
14.		Leica S Typ 007	Medium Format	37.5	7500	5000	4K/24p	25.1	13.7	2763	93
15.		Leica SL	Full Frame	24.0	6000	4000	4K/30p	25.0	13.4	1821	88
16.		Leica SL2	Full Frame	46.7	8368	5584	4K/60p	25.3	14.3	2866	95
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 S3 indeed provides for movie recording, while the M10-R does not. The highest resolution format that the S3 can use is 4K/24p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The M10-R and the S3 are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinder in the M10-R offers a wider field of view (100%) than the one in the S3 (98%), so that a larger proportion of the captured image is visible in the finder. On the other hand, the viewfinder of the S3 has a higher magnification (0.87x vs 0.73x), 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 M10-R and Leica S3 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 M10-R	optical	n	3.0 / 1037	fixed	Y	1/4000s	4.5/s	n	n
2.		Leica S3	optical	Y	3.0 / 922	fixed	n	1/4000s	3.0/s	n	n
3.		Leica M Typ 240	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	n	n
4.		Leica M-E Typ 240	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	n	n
5.		Leica M Typ 262	optical	n	3.0 / 921	fixed	n	1/4000s	3.0/s	n	n
6.		Leica M9	optical	n	2.5 / 230	fixed	n	1/4000s	2.0/s	n	n
7.		Leica M10	optical	n	3.0 / 1037	fixed	n	1/4000s	5.0/s	n	n
8.		Leica M10-P	optical	n	3.0 / 1037	fixed	Y	1/4000s	5.0/s	n	n
9.		Leica M11	optical	n	3.0 / 2333	fixed	Y	1/4000s	4.5/s	n	n
10.		Leica Q2	3680	n	3.0 / 1040	fixed	Y	1/2000s	10.0/s	n	Y
11.		Leica S2	optical	Y	3.0 / 460	fixed	n	1/4000s	1.5/s	n	n
12.		Leica S Typ 006	optical	Y	3.0 / 922	fixed	n	1/4000s	1.5/s	n	n
13.		Leica S-E Typ 006	optical	Y	3.0 / 922	fixed	n	1/4000s	1.5/s	n	n
14.		Leica S Typ 007	optical	Y	3.0 / 922	fixed	n	1/4000s	3.5/s	n	n
15.		Leica SL	4400	Y	3.0 / 1040	fixed	Y	1/8000s	11.0/s	n	n
16.		Leica SL2	5760	Y	3.2 / 2100	fixed	Y	1/8000s	10.0/s	n	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 M10-R has a touchscreen, while the S3 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The Leica M10-R 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 M10-R writes its imaging data to SDXC cards, while the S3 uses Compact Flash or SDXC cards. The S3 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 S3 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the M10-R can use UHS-I cards (up to 104 MB/s).

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 S3 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 S3	Y	stereo / mono	Y	Y	mini	3.0	Y	-	-
3.		Leica M Typ 240	Y	stereo / mono	-	-	-	2.0	-	-	-
4.		Leica M-E Typ 240	Y	mono / -	-	-	-	2.0	-	-	-
5.		Leica M Typ 262	Y	- / -	-	-	-	2.0	-	-	-
6.		Leica M9	Y	- / -	-	-	-	2.0	-	-	-
7.		Leica M10	Y	- / -	-	-	-	-	Y	-	-
8.		Leica M10-P	Y	- / -	-	-	-	-	Y	-	-
9.		Leica M11	Y	- / -	-	-	-	3.2	Y	-	Y
10.		Leica Q2	Y	stereo / mono	-	-	-	-	Y	-	Y
11.		Leica S2	Y	- / -	-	-	mini	2.0	-	-	-
12.		Leica S Typ 006	Y	- / -	-	-	mini	2.0	-	-	-
13.		Leica S-E Typ 006	Y	- / -	-	-	mini	2.0	-	-	-
14.		Leica S Typ 007	Y	stereo / mono	Y	Y	mini	3.0	Y	-	-
15.		Leica SL	Y	stereo / mono	Y	Y	full	3.0	Y	-	-
16.		Leica SL2	Y	stereo / mono	Y	Y	full	3.1	Y	-	Y

Studio photographers will appreciate that the Leica S3 (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 S3 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the M10-R and the S3 have been discontinued, but can regularly be found used on ebay. Neither of the two has a direct successor, so they represent the end of the respective camera lines from Leica. Further information on the features and operation of the M10-R and S3 can be found, respectively, in the Leica M10-R Manual (free pdf) or the online Leica S3 Manual.

Review summary

So how do things add up? Is there a clear favorite between the Leica M10-R and the Leica S3? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

Advantages of the Leica M10-R:

• More complete view: Has a viewfinder with a larger field of view (100% vs 98%).
• More detailed LCD: Has a higher resolution rear screen (1037k vs 922k dots).
• Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
• Faster burst: Shoots at higher frequency (4.5 vs 3 flaps/sec) to capture the decisive moment.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• More compact: Is smaller (139x80mm vs 160x120mm) and thus needs less room in the bag.
• Less heavy: Is lighter (by 600g or 48 percent) and hence easier to carry around.
• More affordable: Was introduced into a lower priced category (56 percent cheaper at launch).
• More modern: Is somewhat more recent (announced 1 year and 9 months after the S3).

Arguments in favor of the Leica S3:

• More detail: Has more megapixels (64 vs 40.9MP), which boosts linear resolution by 25%.
• 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.
• Broader imaging potential: Can capture not only stills but also 4K/24p video.
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.87x vs 0.73x).
• Easier setting verification: Features a control panel on top to check shooting parameters.
• 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 on the market for longer (launched in September 2018).

If the number of relative strengths (bullet points above) is taken as a guide, the S3 is the clear winner of the contest (13 : 9 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 says little about, for example, the shooting experience and imaging performance of the M10-R and the S3 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 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 S3	..	..	..	..	..	..	Sep 2018	18,995	ebay.com
3.		Leica M Typ 240	4/5	..	..	..	4/5	..	Sep 2012	6,950	ebay.com
4.		Leica M-E Typ 240	..	..	..	..	..	..	Jun 2019	3,999	ebay.com
5.		Leica M Typ 262	..	..	..	..	..	..	Nov 2015	5,195	ebay.com
6.		Leica M9	..	..	..	..	4.5/5	..	Sep 2009	7,999	ebay.com
7.		Leica M10	4.5/5	..	..	..	4/5	4.5/5	Jan 2017	6,595	ebay.com
8.		Leica M10-P	..	..	3/5	..	..	4/5	Aug 2018	7,995	ebay.com
9.		Leica M11	4.5/5	..	4.5/5	..	4.5/5	4.5/5	Jan 2022	8,995	amazon.com
10.		Leica Q2	..	..	4.5/5	84/100	4.5/5	4/5	Mar 2019	4,995	amazon.com
11.		Leica S2	..	..	..	..	..	..	Sep 2008	22,995	ebay.com
12.		Leica S Typ 006	..	..	..	..	..	..	Sep 2012	21,950	ebay.com
13.		Leica S-E Typ 006	..	..	..	..	..	..	Sep 2014	16,900	ebay.com
14.		Leica S Typ 007	4/5	..	..	..	..	..	Sep 2014	24,490	ebay.com
15.		Leica SL	4/5	..	4/5	84/100	4.5/5	4/5	Oct 2015	7,450	ebay.com
16.		Leica SL2	4/5	..	4.5/5	..	4.5/5	4/5	Nov 2019	5,999	amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, 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 are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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