Canon 1D vs Leica S1

The Canon EOS-1D and the Leica S1 Pro are two professional cameras that were revealed to the public, respectively, in September 2001 and August 1996. The 1D is a DSLR, while the S1 is a mirrorless interchangeable lens camera. The cameras are based on an APS-H (1D) and a medium format (S1) sensor. The Canon has a resolution of 4.1 megapixels, whereas the Leica provides 26.4 MP.

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

Headline Specifications

Canon 1D		Leica S1
Digital single lens reflex		Mirrorless system camera
Canon EF mount lenses		Leica R mount lenses
4.1 MP – APS-H sensor		26.4 MP – Medium Format sensor
no Video		no Video
ISO 200-1,600 (100 - 3,200)		ISO 50-1,600
Optical viewfinder		Optical viewfinder
2.0" LCD – 120k dots		no LCD
Fixed screen (not touch-sensitive)		no rear screen
8 shutter flaps per second		0.01 shutter flaps per second
Weathersealed body		not weather sealed
156 x 158 x 80 mm, 1585 g		339 x 214 x 119 mm, 2500 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS-1D and the Leica S1 Pro? 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 1D and the Leica S1 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.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Leica S1 is considerably larger (194 percent) than the Canon 1D. Moreover, the S1 is substantially heavier (58 percent) than the 1D. It is worth mentioning in this context that the 1D is splash and dust resistant, while the S1 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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (1D) and the Leica R Lens Catalog (S1). Mirrorless cameras, such as the S1, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.

As can be seen in the images above, the 1D has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power.

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.		Canon 1D	156 mm	158 mm	80 mm	1585 g	500	Y	Sep 2001	6,499	ebay.com
2.		Leica S1	339 mm	214 mm	119 mm	2500 g	..	n	Aug 1996	21,490	ebay.com
3.		Canon 1D X Mark III	158 mm	168 mm	83 mm	1440 g	2850	Y	Jan 2020	6,499	amazon.com
4.		Canon 1D X Mark II	158 mm	168 mm	83 mm	1530 g	1210	Y	Feb 2016	5,999	ebay.com
5.		Canon 1D C	158 mm	164 mm	83 mm	1545 g	1120	Y	Apr 2012	14,999	ebay.com
6.		Canon 1D X	158 mm	168 mm	83 mm	1551 g	1120	Y	Oct 2011	6,799	ebay.com
7.		Canon 1D Mark IV	156 mm	157 mm	80 mm	1230 g	1500	Y	Oct 2009	4,999	ebay.com
8.		Canon 1D Mark III	156 mm	157 mm	80 mm	1155 g	2200	Y	Feb 2007	4,499	ebay.com
9.		Canon 1Ds Mark III	150 mm	160 mm	80 mm	1385 g	1800	Y	Aug 2007	7,999	ebay.com
10.		Canon 1D Mark II N	156 mm	158 mm	80 mm	1565 g	1200	Y	Aug 2005	3,999	ebay.com
11.		Canon 1D Mark II	156 mm	158 mm	80 mm	1535 g	1200	Y	Jan 2004	4,499	ebay.com
12.		Canon 1Ds	156 mm	158 mm	80 mm	1265 g	600	Y	Sep 2002	8,999	ebay.com
13.		Leica CL	131 mm	78 mm	45 mm	403 g	220	n	Nov 2017	2,795	ebay.com
14.		Leica TL2	134 mm	69 mm	33 mm	399 g	250	n	Jul 2017	1,950	ebay.com
15.		Leica Q Typ 116	130 mm	80 mm	93 mm	640 g	300	n	Jun 2015	4,249	ebay.com
16.		Leica S2	160 mm	120 mm	80 mm	1410 g	..	Y	Sep 2008	22,995	ebay.com
17.		Sony A6400	120 mm	67 mm	50 mm	403 g	410	Y	Jan 2019	899	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 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 1D was launched at a markedly lower price (by 70 percent) than the S1, 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.

Sensor comparison

The size of the imaging sensor is a crucial determinant 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon 1D features an APS-H sensor and the Leica S1 a medium format sensor. The sensor area in the S1 is 136 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.3 and 0.85. The sensor in the 1D has a native 3:2 aspect ratio, while the one in the S1 offers a 1:1 aspect.

With 26.4MP, the S1 offers a higher resolution than the 1D (4.1MP), but the S1 has smaller individual pixels (pixel pitch of 7.01μm versus 11.56μm for the 1D). Yet, the 1D is a much more recent model (by 5 years) than the S1, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the S1 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Leica S1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the S1 for good quality output (200 dots per inch) amounts to 25.7 x 25.7 inches or 65.3 x 65.3 cm, for very good quality (250 dpi) 20.6 x 20.6 inches or 52.2 x 52.2 cm, and for excellent quality (300 dpi) 17.1 x 17.1 inches or 43.5 x 43.5 cm. The corresponding values for the Canon 1D are 12.5 x 8.3 inches or 31.7 x 21.1 cm for good quality, 10 x 6.6 inches or 25.4 x 16.9 cm for very good quality, and 8.3 x 5.5 inches or 21.1 x 14.1 cm for excellent quality prints.

The Canon EOS-1D has a native sensitivity range from ISO 200 to ISO 1600, which can be extended to ISO 100-3200. The corresponding ISO settings for the Leica S1 Pro are ISO 50 to ISO 1600 (no boost).

Technology-wise, both cameras are equipped with CCD (Charged Coupled Device) 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 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 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.		Canon 1D	APS-H	4.1	2496	1662	none	..	..	..	..
2.		Leica S1	Medium Format	26.4	5140	5140	none	..	..	..	..
3.		Canon 1D X Mark III	Full Frame	20.0	5472	3648	4K/60p	24.2	14.5	3248	91
4.		Canon 1D X Mark II	Full Frame	20.0	5472	3648	4K/60p	24.1	13.5	3207	88
5.		Canon 1D C	Full Frame	17.9	5184	3456	4K/24p	24.3	13.0	2155	85
6.		Canon 1D X	Full Frame	17.9	5184	3456	1080/30p	23.8	11.8	2786	82
7.		Canon 1D Mark IV	APS-H	16.0	4896	3264	1080/30p	22.8	12.0	1320	74
8.		Canon 1D Mark III	APS-H	10.1	3888	2592	none	22.7	11.7	1078	71
9.		Canon 1Ds Mark III	Full Frame	21.0	5616	3744	none	24.0	12.0	1663	80
10.		Canon 1D Mark II N	APS-H	8.2	3504	2336	none	22.3	11.2	975	66
11.		Canon 1D Mark II	APS-H	8.2	3504	2336	none	22.3	11.1	1003	66
12.		Canon 1Ds	Full Frame	11.0	4064	2704	none	21.8	11.0	954	63
13.		Leica CL	APS-C	24.1	6014	4014	4K/30p	24.0	13.3	1788	82
14.		Leica TL2	APS-C	24.1	6014	4014	4K/30p	23.9	13.3	1753	82
15.		Leica Q Typ 116	Full Frame	24.0	6000	4000	1080/60p	24.3	12.7	2221	85
16.		Leica S2	Medium Format	37.5	7500	5000	none	23.9	12.5	2224	82
17.		Sony A6400	APS-C	24.0	6000	4000	4K/30p	24.0	13.6	1431	83
Note: DXO values in italics represent estimates based on sensor size and age.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The 1D and the S1 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 adjacent table lists some of the other core features of the Canon 1D and Leica S1 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.		Canon 1D	optical	Y	2.0 / 120	fixed	n	1/16000s	8.0/s	n	n
2.		Leica S1	optical	n	none / none	none	n	..	0.01/s	n	n
3.		Canon 1D X Mark III	optical	Y	3.2 / 2100	fixed	Y	1/8000s	20.0/s	n	n
4.		Canon 1D X Mark II	optical	Y	3.2 / 1620	fixed	Y	1/8000s	16.0/s	n	n
5.		Canon 1D C	optical	Y	3.2 / 1040	fixed	n	1/8000s	14.0/s	n	n
6.		Canon 1D X	optical	Y	3.2 / 1040	fixed	n	1/8000s	14.0/s	n	n
7.		Canon 1D Mark IV	optical	Y	3.0 / 920	fixed	n	1/8000s	10.0/s	n	n
8.		Canon 1D Mark III	optical	Y	3.0 / 230	fixed	n	1/8000s	10.0/s	n	n
9.		Canon 1Ds Mark III	optical	Y	3.0 / 230	fixed	n	1/8000s	5.0/s	n	n
10.		Canon 1D Mark II N	optical	Y	2.5 / 230	fixed	n	1/8000s	8.5/s	n	n
11.		Canon 1D Mark II	optical	Y	2.0 / 230	fixed	n	1/8000s	8.3/s	n	n
12.		Canon 1Ds	optical	Y	2.0 / 120	fixed	n	1/8000s	3.0/s	n	n
13.		Leica CL	2360	Y	3.0 / 1040	fixed	Y	1/8000s	10.0/s	n	n
14.		Leica TL2	optional	n	3.7 / 1230	fixed	Y	1/4000s	7.0/s	n	n
15.		Leica Q Typ 116	3680	n	3.0 / 1040	fixed	Y	1/2000s	10.0/s	n	Y
16.		Leica S2	optical	Y	3.0 / 460	fixed	n	1/4000s	1.5/s	n	n
17.		Sony A6400	2359	n	3.0 / 922	tilting	Y	1/4000s	11.0/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 1D, but is missing on the S1 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 1D writes its imaging data to Compact Flash cards, while the S1 uses external storage.

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-1D and Leica S1 Pro 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 1D	Y	- / -	-	-	-	FW	-	-	-
2.		Leica S1	-	- / -	-	-	-	-	-	-	-
3.		Canon 1D X Mark III	Y	mono / mono	Y	Y	mini	3.1	Y	-	Y
4.		Canon 1D X Mark II	Y	mono / mono	Y	Y	mini	3.0	-	-	-
5.		Canon 1D C	Y	mono / mono	Y	Y	mini	2.0	-	-	-
6.		Canon 1D X	Y	mono / -	Y	-	mini	2.0	-	-	-
7.		Canon 1D Mark IV	Y	stereo / -	Y	-	mini	2.0	-	-	-
8.		Canon 1D Mark III	Y	- / -	-	-	-	2.0	-	-	-
9.		Canon 1Ds Mark III	Y	mono / -	-	-	-	2.0	-	-	-
10.		Canon 1D Mark II N	Y	- / -	-	-	-	1.1	-	-	-
11.		Canon 1D Mark II	Y	- / -	-	-	-	1.1	-	-	-
12.		Canon 1Ds	Y	- / -	-	-	-	FW	-	-	-
13.		Leica CL	Y	stereo / mono	-	-	-	-	Y	-	-
14.		Leica TL2	Y	stereo / mono	-	-	micro	3.0	Y	-	-
15.		Leica Q Typ 116	Y	stereo / mono	-	-	micro	2.0	Y	Y	-
16.		Leica S2	Y	- / -	-	-	mini	2.0	-	-	-
17.		Sony A6400	Y	stereo / mono	Y	-	micro	2.0	Y	Y	Y

It is notable that the 1D has a hotshoe, while the S1 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Studio photographers will appreciate that the Canon 1D (unlike the S1) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the 1D and the S1 have been discontinued, but can regularly be found used on ebay. The S1 was replaced by the Leica S2, while the 1D was followed by the Canon 1D Mark II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Leica websites.

Review summary

So how do things add up? Which of the two cameras – the Canon 1D or the Leica S1 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

Advantages of the Canon EOS-1D:

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Easier setting verification: Features an LCD display on top to control shooting parameters.
• Rear screen: Has a backside LCD (2.0") for image review and settings control.
• Faster burst: Shoots at higher frequency (8 vs 0.01 flaps/sec) to capture the decisive moment.
• More compact: Is smaller (156x158mm vs 339x214mm) and thus needs less room in the bag.
• Less heavy: Is lighter (by 915g or 37 percent) and hence easier to carry around.
• More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
• Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
• More affordable: Was introduced into a lower priced category (70 percent cheaper at launch).
• More modern: Reflects 5 years of technical progress since the S1 launch.

Arguments in favor of the Leica S1 Pro:

• More detail: Has more megapixels (26.4 vs 4.1MP), which boosts linear resolution by 142%.
• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• More legacy lens friendly: Can use many non-native lenses via adapters.
• More prestigious: Has the Leica luxury appeal, which ensures a high resale value.
• More heavily discounted: Has been around for much longer (launched in August 1996).

If the count of relative strengths (bullet points above) is taken as a measure, the 1D is the clear winner of the match-up (12 : 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.

How about other alternatives? Do the specifications of the Canon 1D and the Leica S1 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the 1D and the S1 in practical situations. 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 expert reviews 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 1D	..	..	..	+ +	..	..	Sep 2001	6,499	ebay.com
2.		Leica S1	..	..	..	..	..	..	Aug 1996	21,490	ebay.com
3.		Canon 1D X Mark III	..	+ +	5/5	..	4.5/5	4/5	Jan 2020	6,499	amazon.com
4.		Canon 1D X Mark II	..	..	4.5/5	89/100	4.5/5	4.5/5	Feb 2016	5,999	ebay.com
5.		Canon 1D C	..	..	..	..	..	..	Apr 2012	14,999	ebay.com
6.		Canon 1D X	5/5	..	..	..	4.5/5	4.5/5	Oct 2011	6,799	ebay.com
7.		Canon 1D Mark IV	5/5	..	..	89/100	..	..	Oct 2009	4,999	ebay.com
8.		Canon 1D Mark III	..	..	..	..	..	..	Feb 2007	4,499	ebay.com
9.		Canon 1Ds Mark III	..	..	..	+ +	4.5/5	..	Aug 2007	7,999	ebay.com
10.		Canon 1D Mark II N	..	..	..	..	..	..	Aug 2005	3,999	ebay.com
11.		Canon 1D Mark II	..	..	..	+ +	..	..	Jan 2004	4,499	ebay.com
12.		Canon 1Ds	..	..	..	+ +	..	..	Sep 2002	8,999	ebay.com
13.		Leica CL	..	..	4.2/5	..	..	4/5	Nov 2017	2,795	ebay.com
14.		Leica TL2	3.5/5	..	3/5	..	4/5	4/5	Jul 2017	1,950	ebay.com
15.		Leica Q Typ 116	5/5	..	..	80/100	4.5/5	4.5/5	Jun 2015	4,249	ebay.com
16.		Leica S2	..	..	..	..	..	..	Sep 2008	22,995	ebay.com
17.		Sony A6400	4/5	+	4/5	85/100	4.5/5	4/5	Jan 2019	899	amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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. 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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