Canon 90D vs Leica S2

The Canon EOS 90D and the Leica S2 are two digital cameras that were officially introduced, respectively, in August 2019 and September 2008. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (90D) and a medium format (S2) sensor. The Canon has a resolution of 32.3 megapixels, whereas the Leica provides 37.5 MP.

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

Headline Specifications

Canon 90D		Leica S2
Digital single lens reflex		Digital single lens reflex
Canon EF mount lenses		Leica S mount lenses
32.3 MP – APS-C sensor		37.5 MP – Medium Format sensor
4K/30p Video		no Video
ISO 100-25,600 (100 - 51,200)		ISO 80-1,250
Optical viewfinder		Optical viewfinder
3.0" LCD – 1040k dots		3.0" LCD – 460k dots
Swivel touchscreen		Fixed screen (not touch-sensitive)
11 shutter flaps per second		1.5 shutter flaps per second
Weathersealed body		Weathersealed body
141 x 105 x 77 mm, 701 g		160 x 120 x 80 mm, 1410 g

Check 90D price at
amazon.com
Check S2 offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 90D and the Leica S2? 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 90D and the Leica S2 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 measures 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 S2 is notably larger (30 percent) than the Canon 90D. Moreover, the S2 is substantially heavier (101 percent) than the 90D. 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 90D gets 1300 shots out of its Canon LP-E6N battery, while the S2 can take .. images on a single charge of its Leica BP-PRO1 power pack.

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 (USD)	Street Price
1.		Canon 90D	141 mm	105 mm	77 mm	701 g	1300	Y	Aug 2019	1,199	amazon.com
2.		Leica S2	160 mm	120 mm	80 mm	1410 g	..	Y	Sep 2008	22,995	ebay.com
3.		Canon R	139 mm	98 mm	84 mm	660 g	370	Y	Sep 2018	2,299	ebay.com
4.		Canon 80D	139 mm	105 mm	79 mm	730 g	960	Y	Feb 2016	1,199	ebay.com
5.		Canon G3 X	123 mm	77 mm	105 mm	733 g	300	Y	Jun 2015	999	ebay.com
6.		Canon 7D II	149 mm	112 mm	78 mm	910 g	670	Y	Sep 2014	1,799	ebay.com
7.		Canon 70D	139 mm	104 mm	79 mm	755 g	920	Y	Jul 2013	1,199	ebay.com
8.		Canon T5i	133 mm	100 mm	79 mm	580 g	440	n	Mar 2013	649	ebay.com
9.		Canon 60D	145 mm	106 mm	79 mm	755 g	1100	Y	Aug 2010	1,399	ebay.com
10.		Canon 50D	146 mm	108 mm	74 mm	822 g	800	Y	Aug 2008	1,299	ebay.com
11.		Canon 40D	146 mm	108 mm	74 mm	822 g	750	n	Aug 2007	1,299	ebay.com
12.		Canon 30D	144 mm	106 mm	74 mm	785 g	750	n	Feb 2006	1,399	ebay.com
13.		Leica S3	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2018	18,995	ebay.com
14.		Leica S-E Typ 006	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2014	16,900	ebay.com
15.		Leica S Typ 007	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2014	24,490	ebay.com
16.		Leica S Typ 006	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2012	21,950	ebay.com
17.		Leica S1	339 mm	214 mm	119 mm	2500 g	..	n	Aug 1996	21,490	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 obviously take relative prices into account. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The 90D was launched at a markedly lower price (by 95 percent) than the S2, which puts it into a different market segment. 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. 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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon 90D features an APS-C sensor and the Leica S2 a medium format sensor. The sensor area in the S2 is 299 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 0.8. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

With 37.5MP, the S2 offers a higher resolution than the 90D (32.3MP), but the S2 nevertheless has larger individual pixels (pixel pitch of 6.00μm versus 3.23μm for the 90D) due to its larger sensor. However, the 90D is a much more recent model (by 10 years and 11 months) than the S2, and its sensor will 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 the S2 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Leica S2 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the S2 for good quality output (200 dots per inch) amounts to 37.5 x 25 inches or 95.3 x 63.5 cm, for very good quality (250 dpi) 30 x 20 inches or 76.2 x 50.8 cm, and for excellent quality (300 dpi) 25 x 16.7 inches or 63.5 x 42.3 cm. The corresponding values for the Canon 90D are 34.8 x 23.2 inches or 88.4 x 58.9 cm for good quality, 27.8 x 18.6 inches or 70.7 x 47.1 cm for very good quality, and 23.2 x 15.5 inches or 58.9 x 39.3 cm for excellent quality prints.

The 90D has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Canon EOS 90D has a native sensitivity range from ISO 100 to ISO 25600, which can be extended to ISO 100-51200. The corresponding ISO settings for the Leica S2 are ISO 80 to ISO 1250 (no boost).

In terms of underlying technology, the 90D is build around a CMOS sensor, while the S2 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.

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-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 90D	APS-C	32.3	6960	4640	4K/30p	24.0	13.5	1848	83
2.		Leica S2	Medium Format	37.5	7500	5000	none	23.9	12.5	2224	82
3.		Canon R	Full Frame	30.1	6720	4480	4K/30p	24.5	13.5	2742	89
4.		Canon 80D	APS-C	24.0	6000	4000	1080/60p	23.6	13.2	1135	79
5.		Canon G3 X	1-inch	20.0	5472	3648	1080/60p	21.4	12.3	521	63
6.		Canon 7D II	APS-C	20.0	5472	3648	1080/60p	22.4	11.8	1082	70
7.		Canon 70D	APS-C	20.0	5472	3648	1080/30p	22.5	11.6	926	68
8.		Canon T5i	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	681	61
9.		Canon 60D	APS-C	17.9	5184	3456	1080/30p	22.2	11.5	813	66
10.		Canon 50D	APS-C	15.1	4752	3168	none	21.8	11.4	696	63
11.		Canon 40D	APS-C	10.1	3888	2592	none	22.1	11.3	703	64
12.		Canon 30D	APS-C	8.2	3504	2336	none	21.5	10.8	736	59
13.		Leica S3	Medium Format	64.0	9800	6533	4K/24p	25.6	14.4	3143	98
14.		Leica S-E Typ 006	Medium Format	37.5	7500	5000	none	25.1	13.7	2763	93
15.		Leica S Typ 007	Medium Format	37.5	7500	5000	4K/24p	25.1	13.7	2763	93
16.		Leica S Typ 006	Medium Format	37.5	7500	5000	none	23.9	12.2	824	76
17.		Leica S1	Medium Format	26.4	5140	5140	none	..	..	..	..
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 90D indeed provides movie recording capabilities, while the S2 does not. The highest resolution format that the 90D can use is 4K/30p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The 90D and the S2 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 90D offers a wider field of view (100%) than the one in the S2 (96%), so that a larger proportion of the captured image is visible in the finder. On the other hand, the viewfinder of the S2 has a higher magnification (0.86x vs 0.59x), 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 Canon 90D and Leica S2 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.		Canon 90D	optical	Y	3.0 / 1040	swivel	Y	1/8000s	11.0/s	Y	n
2.		Leica S2	optical	Y	3.0 / 460	fixed	n	1/4000s	1.5/s	n	n
3.		Canon R	3690	Y	3.2 / 2100	swivel	Y	1/8000s	8.0/s	n	n
4.		Canon 80D	optical	Y	3.0 / 1040	swivel	Y	1/8000s	7.0/s	Y	n
5.		Canon G3 X	optional	n	3.2 / 1620	tilting	Y	1/2000s	5.9/s	Y	Y
6.		Canon 7D II	optical	Y	3.0 / 1040	fixed	n	1/8000s	10.0/s	Y	n
7.		Canon 70D	optical	Y	3.0 / 1040	swivel	Y	1/8000s	7.0/s	Y	n
8.		Canon T5i	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
9.		Canon 60D	optical	Y	3.0 / 1040	swivel	n	1/8000s	5.3/s	Y	n
10.		Canon 50D	optical	Y	3.0 / 920	fixed	n	1/8000s	6.3/s	Y	n
11.		Canon 40D	optical	Y	3.0 / 230	fixed	n	1/8000s	6.5/s	Y	n
12.		Canon 30D	optical	Y	2.5 / 230	fixed	n	1/8000s	5.0/s	Y	n
13.		Leica S3	optical	Y	3.0 / 922	fixed	n	1/4000s	3.0/s	n	n
14.		Leica S-E Typ 006	optical	Y	3.0 / 922	fixed	n	1/4000s	1.5/s	n	n
15.		Leica S Typ 007	optical	Y	3.0 / 922	fixed	n	1/4000s	3.5/s	n	n
16.		Leica S Typ 006	optical	Y	3.0 / 922	fixed	n	1/4000s	1.5/s	n	n
17.		Leica S1	optical	n	none / none	none	n	..	0.01/s	n	n
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 90D has one, while the S2 does not. While the built-in flash of the 90D 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 90D 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 Canon 90D 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 90D writes its imaging data to SDXC cards, while the S2 uses Compact Flash or SDHC cards. The S2 features dual card slots, which can be very useful in case a memory card fails. In contrast, the 90D only has one slot. The 90D supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the S2 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 EOS 90D and Leica S2 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 90D	Y	stereo / mono	Y	Y	mini	2.0	Y	-	Y
2.		Leica S2	Y	- / -	-	-	mini	2.0	-	-	-
3.		Canon R	Y	stereo / mono	Y	Y	mini	3.1	Y	-	Y
4.		Canon 80D	Y	stereo / mono	Y	Y	mini	2.0	Y	Y	-
5.		Canon G3 X	Y	stereo / mono	Y	Y	mini	2.0	Y	Y	-
6.		Canon 7D II	Y	stereo / mono	Y	Y	mini	3.0	-	-	-
7.		Canon 70D	Y	stereo / mono	Y	-	mini	2.0	Y	-	-
8.		Canon T5i	Y	stereo / mono	Y	-	mini	2.0	-	-	-
9.		Canon 60D	Y	mono / mono	Y	-	mini	2.0	-	-	-
10.		Canon 50D	Y	- / -	-	-	mini	2.0	-	-	-
11.		Canon 40D	Y	- / -	-	-	-	2.0	-	-	-
12.		Canon 30D	Y	- / -	-	-	-	2.0	-	-	-
13.		Leica S3	Y	stereo / mono	Y	Y	mini	3.0	Y	-	-
14.		Leica S-E Typ 006	Y	- / -	-	-	mini	2.0	-	-	-
15.		Leica S Typ 007	Y	stereo / mono	Y	Y	mini	3.0	Y	-	-
16.		Leica S Typ 006	Y	- / -	-	-	mini	2.0	-	-	-
17.		Leica S1	-	- / -	-	-	-	-	-	-	-

It is notable that the 90D offers wifi support, while the S2 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Studio photographers will appreciate that the Leica S2 (unlike the 90D) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The 90D is a recent model that features in the current product line-up of Canon. In contrast, the S2 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the S2 was succeeded by the Leica S Typ 006. Further information on the features and operation of the 90D and S2 can be found, respectively, in the Canon 90D Manual (free pdf) or the online Leica S2 Manual.

Review summary

So how do things add up? Is there a clear favorite between the Canon 90D and the Leica S2? Which camera is better? The listing below highlights the relative strengths of the two models.

Advantages of the Canon EOS 90D:

• 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.
• Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
• More complete view: Has a viewfinder with a larger field of view (100% vs 96%).
• More detailed LCD: Has a higher resolution rear screen (1040k vs 460k dots).
• More flexible LCD: Has a swivel screen for odd-angle shots in portrait or 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 shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
• Faster burst: Shoots at higher frequency (11 vs 1.5 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.
• More compact: Is smaller (141x105mm vs 160x120mm) and thus needs less room in the bag.
• Less heavy: Is lighter (by 709g or 50 percent) and hence easier to carry around.
• 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.
• Easier wireless transfer: Supports Bluetooth for image sharing without cables.
• Faster buffer clearing: Supports Ultra High Speed (UHS-II) SDXC cards.
• More affordable: Was introduced into a lower priced category (95 percent cheaper at launch).
• More modern: Reflects 10 years and 11 months of technical progress since the S2 launch.

Reasons to prefer the Leica S2:

• More detail: Has more megapixels (37.5 vs 32.3MP), which boosts linear resolution by 8%.
• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.86x vs 0.59x).
• 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.
• 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 2008).

If the count of individual advantages (bullet points above) is taken as a guide, the 90D is the clear winner of the match-up (20 : 7 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision 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 90D and the Leica S2 place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the 90D or the S2 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 (USD)	Street Price
1.		Canon 90D	4/5	+	4.5/5	85/100	4.5/5	4.5/5	Aug 2019	1,199	amazon.com
2.		Leica S2	..	..	..	..	..	..	Sep 2008	22,995	ebay.com
3.		Canon R	4/5	o	4/5	79/100	4.5/5	4/5	Sep 2018	2,299	ebay.com
4.		Canon 80D	4/5	+ +	4.5/5	84/100	4.5/5	4.5/5	Feb 2016	1,199	ebay.com
5.		Canon G3 X	3.5/5	+	..	..	4.5/5	4/5	Jun 2015	999	ebay.com
6.		Canon 7D II	4.5/5	+	3.5/5	84/100	4/5	4.5/5	Sep 2014	1,799	ebay.com
7.		Canon 70D	5/5	+ +	..	83/100	4.5/5	5/5	Jul 2013	1,199	ebay.com
8.		Canon T5i	..	..	..	76/100	4.5/5	4.5/5	Mar 2013	649	ebay.com
9.		Canon 60D	5/5	+	..	79/100	4/5	4.5/5	Aug 2010	1,399	ebay.com
10.		Canon 50D	..	+ +	..	+ +	4.5/5	4.5/5	Aug 2008	1,299	ebay.com
11.		Canon 40D	..	+ +	..	+ +	4.5/5	4.5/5	Aug 2007	1,299	ebay.com
12.		Canon 30D	..	+ +	..	+ +	o	..	Feb 2006	1,399	ebay.com
13.		Leica S3	..	..	..	..	..	..	Sep 2018	18,995	ebay.com
14.		Leica S-E Typ 006	..	..	..	..	..	..	Sep 2014	16,900	ebay.com
15.		Leica S Typ 007	4/5	..	..	..	..	..	Sep 2014	24,490	ebay.com
16.		Leica S Typ 006	..	..	..	..	..	..	Sep 2012	21,950	ebay.com
17.		Leica S1	..	..	..	..	..	..	Aug 1996	21,490	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date 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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ebay.com

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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