Leica M9 vs Nikon D850

The Leica M9 and the Nikon D850 are two digital cameras that were officially introduced, respectively, in September 2009 and July 2017. The M9 is a rangefinder-focusing mirrorless camera, while the D850 is a DSLR. Both cameras are equipped with a full frame sensor. The Leica has a resolution of 18.1 megapixels, whereas the Nikon provides 45.4 MP.

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

Headline Specifications

Leica M9		Nikon D850
Rangefinder camera		Digital single lens reflex
Leica M mount lenses		Nikon F mount lenses
18.1 MP – Full Frame sensor		45.4 MP – Full Frame sensor
no Video		4K/30p Video
ISO 80-2,500		ISO 64-25,600 (32 - 102,400)
Optical viewfinder		Optical viewfinder
2.5" LCD – 230k dots		3.2" LCD – 2359k dots
Fixed screen (not touch-sensitive)		Tilting touchscreen
2 shutter flaps per second		9 shutter flaps per second
not weather sealed		Weathersealed body
550 shots per battery charge		1840 shots per battery charge
139 x 80 x 37 mm, 585 g		146 x 124 x 79 mm, 1005 g

Check M9 offers at
ebay.com
Check D850 price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Leica M9 and the Nikon D850? 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 M9 and the Nikon D850 are illustrated 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 width, height and depth dimensions are rounded to the nearest millimeter.

The M9 can be obtained in two different colors (black, silver), while the D850 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 Nikon D850 is considerably larger (63 percent) than the Leica M9. Moreover, the D850 is substantially heavier (72 percent) than the M9. It is noteworthy in this context that the D850 is splash and dust-proof, while the M9 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. Both cameras have similarly sized sensors, but DSLRs have a larger flange-to-focal plane distance than mirrorless cameras, which imposes contraints on the optical engineering process and generally leads to bigger and heavier lenses. You can compare the optics available for the two cameras in the Leica M Lens Catalog (M9) and the Nikon Lens Catalog (D850).

Concerning battery life, the M9 gets 550 shots out of its Leica BLI-312 battery, while the D850 can take 1840 images on a single charge of its Nikon EN-EL15a 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	Street Price
1.		Leica M9	139 mm	80 mm	37 mm	585 g	550	n	Sep 2009	US$ 7 999	ebay.com
2.		Nikon D850	146 mm	124 mm	79 mm	1005 g	1840	Y	Jul 2017	US$ 3 299	amazon.com
3.		Canon 5DS	152 mm	116 mm	76 mm	930 g	700	Y	Feb 2015	US$ 3 699	ebay.com
4.		Canon 5DS R	152 mm	116 mm	76 mm	930 g	700	Y	Feb 2015	US$ 3 699	ebay.com
5.		Canon T1i	129 mm	98 mm	62 mm	520 g	400	n	Mar 2009	US$ 799	ebay.com
6.		Canon T2i	129 mm	98 mm	62 mm	530 g	440	n	Feb 2010	US$ 699	ebay.com
7.		Leica M Typ 240	139 mm	80 mm	42 mm	680 g	500	Y	Sep 2012	US$ 6 949	ebay.com
8.		Leica M8	139 mm	80 mm	37 mm	591 g	550	n	Sep 2006	US$ 5 499	ebay.com
9.		Leica M10	139 mm	80 mm	39 mm	660 g	210	Y	Jan 2017	US$ 6 599	ebay.com
10.		Leica M10-P	139 mm	80 mm	39 mm	660 g	210	Y	Aug 2018	US$ 7 999	ebay.com
11.		Leica M10-R	139 mm	80 mm	39 mm	660 g	210	Y	Jul 2020	US$ 8 299	ebay.com
12.		Leica M11	139 mm	80 mm	39 mm	640 g	700	Y	Jan 2022	US$ 8 999	amazon.com
13.		Leica X Vario	133 mm	73 mm	95 mm	680 g	450	n	Jun 2013	US$ 2 849	ebay.com
14.		Leica X Typ 113	133 mm	73 mm	78 mm	486 g	350	n	Sep 2014	US$ 2 299	ebay.com
15.		Nikon D5	160 mm	159 mm	92 mm	1415 g	3780	Y	Jan 2016	US$ 6 499	ebay.com
16.		Nikon D610	141 mm	113 mm	82 mm	850 g	900	Y	Oct 2013	US$ 1 999	ebay.com
17.		Nikon D810	146 mm	123 mm	82 mm	980 g	1200	Y	Jun 2014	US$ 3 299	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

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 D850 was launched at a markedly lower price (by 59 percent) than the M9, 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. 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. 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. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature a full frame sensor, but their sensors differ slightly in size. The sensor area in the D850 is 1 percent smaller. 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 D850 offers a higher resolution of 45.4 megapixels, compared with 18.1 MP of the 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 4.35μm versus 6.91μm for the M9). However, it should be noted that the D850 is much more recent (by 7 years and 10 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 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 Nikon D850 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D850 for good quality output (200 dots per inch) amounts to 41.3 x 27.5 inches or 104.9 x 69.9 cm, for very good quality (250 dpi) 33 x 22 inches or 83.9 x 55.9 cm, and for excellent quality (300 dpi) 27.5 x 18.3 inches or 69.9 x 46.6 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 M9 has a native sensitivity range from ISO 80 to ISO 2500. The corresponding ISO settings for the Nikon D850 are ISO 64 to ISO 25600, with the possibility to increase the ISO range to 32-102400.

In terms of underlying technology, the M9 is build around a CCD sensor, while the D850 uses a BSI-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.

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. Of the two cameras under consideration, the D850 offers substantially better image quality than the M9 (overall score 31 points higher). The advantage is based on 3.9 bits higher color depth, 3.1 EV in additional dynamic range, and 1.6 stops in additional low light sensitivity. 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 M9	Full Frame	18.1	5212	3472	none	22.5	11.7	884	69
2.		Nikon D850	Full Frame	45.4	8256	5504	4K/30p	26.4	14.8	2660	100
3.		Canon 5DS	Full Frame	50.3	8688	5792	1080/30p	24.7	12.4	2381	87
4.		Canon 5DS R	Full Frame	50.3	8688	5792	1080/30p	24.6	12.4	2308	86
5.		Canon T1i	APS-C	15.1	4752	3168	1080/20p	21.7	11.5	663	63
6.		Canon T2i	APS-C	17.9	5184	3456	1080/30p	22.1	11.5	784	66
7.		Leica M Typ 240	Full Frame	23.7	5952	3976	1080/25p	24.0	13.3	1860	84
8.		Leica M8	APS-H	10.4	3936	2630	none	21.1	11.3	663	59
9.		Leica M10	Full Frame	23.8	5952	3992	none	24.4	13.2	2133	86
10.		Leica M10-P	Full Frame	23.8	5952	3992	none	25.1	14.1	2739	93
11.		Leica M10-R	Full Frame	40.9	7864	5200	none	25.3	14.3	2924	95
12.		Leica M11	Full Frame	60.3	9528	6328	none	26.3	14.8	3376	100
13.		Leica X Vario	APS-C	16.1	4928	3272	1080/30p	23.4	12.7	1320	78
14.		Leica X Typ 113	APS-C	16.1	4928	3264	1080/30p	23.6	12.8	1491	78
15.		Nikon D5	Full Frame	20.7	5588	3712	4K/30p	25.1	12.3	2343	88
16.		Nikon D610	Full Frame	24.2	6016	4016	1080/30p	25.1	14.4	2925	94
17.		Nikon D810	Full Frame	36.2	7360	4912	1080/60p	25.7	14.8	2853	97
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 can also record movies. The D850 indeed provides for movie recording, while the M9 does not. The highest resolution format that the D850 can use is 4K/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The M9 and the D850 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 viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the D850 has a higher magnification than the one of the M9 (0.75x vs 0.68x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Leica M9, the Nikon D850, 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.		Leica M9	optical	n	2.5 / 230	fixed	n	1/4000s	2.0/s	n	n
2.		Nikon D850	optical	Y	3.2 / 2359	tilting	Y	1/8000s	9.0/s	n	n
3.		Canon 5DS	optical	Y	3.2 / 1040	fixed	n	1/8000s	5.0/s	n	n
4.		Canon 5DS R	optical	Y	3.2 / 1040	fixed	n	1/8000s	5.0/s	n	n
5.		Canon T1i	optical	n	3.0 / 920	fixed	n	1/4000s	3.4/s	Y	n
6.		Canon T2i	optical	n	3.0 / 1040	fixed	n	1/4000s	3.7/s	Y	n
7.		Leica M Typ 240	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	n	n
8.		Leica M8	optical	n	2.5 / 230	fixed	n	1/8000s	2.0/s	n	n
9.		Leica M10	optical	n	3.0 / 1037	fixed	n	1/4000s	5.0/s	n	n
10.		Leica M10-P	optical	n	3.0 / 1037	fixed	Y	1/4000s	5.0/s	n	n
11.		Leica M10-R	optical	n	3.0 / 1037	fixed	Y	1/4000s	4.5/s	n	n
12.		Leica M11	optical	n	3.0 / 2333	fixed	Y	1/4000s	4.5/s	n	n
13.		Leica X Vario	optional	n	3.0 / 920	fixed	n	1/2000s	5.0/s	Y	n
14.		Leica X Typ 113	optional	n	3.0 / 920	fixed	n	1/2000s	5.0/s	Y	n
15.		Nikon D5	optical	Y	3.2 / 2359	fixed	Y	1/8000s	14.0/s	n	n
16.		Nikon D610	optical	Y	3.2 / 921	fixed	n	1/4000s	6.0/s	Y	n
17.		Nikon D810	optical	Y	3.2 / 1229	fixed	n	1/8000s	5.0/s	Y	n
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 D850 has a touchscreen, while the M9 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The Nikon D850 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 M9 writes its imaging data to SDXC cards, while the D850 uses SDXC or XQD cards. The D850 features dual card slots, which can be very useful in case a memory card fails. In contrast, the M9 only has one slot. The D850 supports UHS-II cards (Ultra High Speed data transfer of up to 312 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 M9 and Nikon D850 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 M9	Y	- / -	-	-	-	2.0	-	-	-
2.		Nikon D850	Y	stereo / mono	Y	Y	mini	3.0	Y	Y	Y
3.		Canon 5DS	Y	mono / mono	Y	-	mini	3.0	-	-	-
4.		Canon 5DS R	Y	mono / mono	Y	-	mini	3.0	-	-	-
5.		Canon T1i	Y	mono / mono	-	-	mini	2.0	-	-	-
6.		Canon T2i	Y	stereo / -	Y	-	mini	2.0	-	-	-
7.		Leica M Typ 240	Y	stereo / mono	-	-	-	2.0	-	-	-
8.		Leica M8	Y	- / -	-	-	-	2.0	-	-	-
9.		Leica M10	Y	- / -	-	-	-	-	Y	-	-
10.		Leica M10-P	Y	- / -	-	-	-	-	Y	-	-
11.		Leica M10-R	Y	- / -	-	-	-	-	Y	-	-
12.		Leica M11	Y	- / -	-	-	-	3.2	Y	-	Y
13.		Leica X Vario	Y	stereo / mono	-	-	mini	2.0	-	-	-
14.		Leica X Typ 113	Y	stereo / mono	-	-	mini	2.0	-	-	-
15.		Nikon D5	Y	stereo / mono	Y	Y	mini	3.0	-	-	-
16.		Nikon D610	Y	mono / mono	Y	Y	mini	2.0	-	-	-
17.		Nikon D810	Y	stereo / mono	Y	Y	mini	3.0	Y	-	-

It is notable that the D850 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the M9 does not provide wifi capability.

Studio photographers will appreciate that the Nikon D850 (unlike the M9) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The D850 is a recent model that features in the current product line-up of Nikon. In contrast, the M9 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the M9 was succeeded by the Leica M Typ 240. Further information on the features and operation of the M9 and D850 can be found, respectively, in the Leica M9 Manual (free pdf) or the online Nikon D850 Manual.

Review summary

So what is the bottom line? Is there a clear favorite between the Leica M9 and the Nikon D850? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

Reasons to prefer the Leica M9:

• More compact: Is smaller (139x80mm vs 146x124mm) and thus needs less room in the bag.
• Less heavy: Is lighter (by 420g or 42 percent) and hence easier to carry around.
• More prestigious: Has the Leica luxury appeal, which ensures a high resale price.
• More heavily discounted: Has been available for much longer (launched in September 2009).

Arguments in favor of the Nikon D850:

• More detail: Has more megapixels (45.4 vs 18.1MP), which boosts linear resolution by 58%.
• Better image quality: Scores substantially higher (31 points) in the DXO overall evaluation.
• Richer colors: Generates noticeably more natural colors (3.9 bits more color depth).
• More dynamic range: Captures a broader range of light and dark details (3.1 EV of extra DR).
• Better low-light sensitivity: Can shoot in dim conditions (1.6 stops ISO advantage).
• Broader imaging potential: Can capture not only stills but also 4K/30p video.
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.75x vs 0.68x).
• Easier setting verification: Features a control panel on top to check shooting parameters.
• Larger screen: Has a bigger rear LCD (3.2" vs 2.5") for image review and settings control.
• More detailed LCD: Has a higher resolution rear screen (2359k vs 230k 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.
• Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
• Faster burst: Shoots at higher frequency (9 vs 2 flaps/sec) to capture the decisive moment.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• Longer lasting: Gets more shots (1840 versus 550) out of a single battery charge.
• Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
• Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
• 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.
• Easier wireless transfer: Supports Bluetooth for image sharing without cables.
• 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: Has an SD card interface that supports the UHS-II standard.
• More affordable: Was introduced into a lower priced category (59 percent cheaper at launch).
• More modern: Reflects 7 years and 10 months of technical progress since the M9 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the D850 is the clear winner of the contest (26 : 4 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro 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 M9 and the D850 in practical situations. 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 where reviews by experts come in. 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 M9	..	..	..	..	4.5/5	..	Sep 2009	US$ 7 999	ebay.com
2.		Nikon D850	4.5/5	+ +	5/5	89/100	4.5/5	5/5	Jul 2017	US$ 3 299	amazon.com
3.		Canon 5DS	..	+	..	83/100	4.5/5	4.5/5	Feb 2015	US$ 3 699	ebay.com
4.		Canon 5DS R	5/5	+	..	83/100	5/5	4.5/5	Feb 2015	US$ 3 699	ebay.com
5.		Canon T1i	..	+ +	..	74/100	4.5/5	4.5/5	Mar 2009	US$ 799	ebay.com
6.		Canon T2i	..	+ +	..	77/100	4/5	4.5/5	Feb 2010	US$ 699	ebay.com
7.		Leica M Typ 240	4/5	..	..	..	4/5	..	Sep 2012	US$ 6 949	ebay.com
8.		Leica M8	..	..	..	+ +	..	..	Sep 2006	US$ 5 499	ebay.com
9.		Leica M10	4.5/5	..	..	..	4/5	4.5/5	Jan 2017	US$ 6 599	ebay.com
10.		Leica M10-P	..	..	3/5	..	..	4/5	Aug 2018	US$ 7 999	ebay.com
11.		Leica M10-R	4.5/5	..	4/5	..	..	4/5	Jul 2020	US$ 8 299	ebay.com
12.		Leica M11	4.5/5	..	4.5/5	..	4.5/5	4.5/5	Jan 2022	US$ 8 999	amazon.com
13.		Leica X Vario	3/5	..	..	..	4/5	4/5	Jun 2013	US$ 2 849	ebay.com
14.		Leica X Typ 113	3.5/5	..	..	..	3.5/5	4/5	Sep 2014	US$ 2 299	ebay.com
15.		Nikon D5	..	..	4/5	89/100	4.5/5	5/5	Jan 2016	US$ 6 499	ebay.com
16.		Nikon D610	4/5	+ +	..	87/100	4.5/5	4.5/5	Oct 2013	US$ 1 999	ebay.com
17.		Nikon D810	5/5	..	5/5	86/100	5/5	4.5/5	Jun 2014	US$ 3 299	ebay.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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. 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

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