Canon T7 vs Leica S3

The Canon EOS Rebel T7 (called Canon 2000D in some regions) and the Leica S3 are two digital cameras that were announced, respectively, in February 2018 and September 2018. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (T7) and a medium format (S3) sensor. The Canon has a resolution of 24 megapixels, whereas the Leica provides 64 MP.

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

Headline Specifications

Canon T7		Leica S3
Digital single lens reflex		Digital single lens reflex
Canon EF mount lenses		Leica S mount lenses
24 MP – APS-C sensor		64 MP – Medium Format sensor
1080/30p Video		4K/24p Video
ISO 100-6,400 (100 - 12,800)		ISO 100-50,000
Optical viewfinder		Optical viewfinder
3.0" LCD – 920k dots		3.0" LCD – 922k dots
Fixed screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
3 shutter flaps per second		3 shutter flaps per second
not weather sealed		Weathersealed body
129 x 101 x 78 mm, 475 g		160 x 120 x 80 mm, 1260 g

Check T7 price at
amazon.com
Check S3 offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS Rebel T7 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

The side-by-side display below illustrates the physical size and weight of the Canon T7 and the Leica S3. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. 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 S3 is considerably larger (47 percent) than the Canon T7. Moreover, the S3 is substantially heavier (165 percent) than the T7. It is noteworthy in this context that the S3 is splash and dust-proof, while the T7 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. 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 T7 gets 500 shots out of its Canon LP-E10 battery, while the S3 can take .. images on a single charge of its Leica BP-PRO1 power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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	Street Price
1.		Canon T7	129 mm	101 mm	78 mm	475 g	500	n	Feb 2018	US$ 449	amazon.com
2.		Leica S3	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2018	US$ 18 999	ebay.com
3.		Canon 77D	131 mm	100 mm	76 mm	540 g	600	n	Feb 2017	US$ 899	ebay.com
4.		Canon SL2	122 mm	93 mm	70 mm	453 g	650	n	Jun 2017	US$ 549	ebay.com
5.		Canon SL3	122 mm	93 mm	70 mm	449 g	1070	n	Apr 2019	US$ 599	amazon.com
6.		Canon T3	130 mm	100 mm	78 mm	495 g	700	n	Feb 2011	US$ 449	ebay.com
7.		Canon T5	130 mm	100 mm	78 mm	480 g	500	n	Feb 2014	US$ 449	ebay.com
8.		Canon T6	129 mm	101 mm	78 mm	485 g	500	n	Mar 2016	US$ 449	ebay.com
9.		Canon T6i	132 mm	101 mm	78 mm	555 g	440	n	Feb 2015	US$ 749	ebay.com
10.		Canon T6s	132 mm	101 mm	78 mm	565 g	440	n	Feb 2015	US$ 649	ebay.com
11.		Canon T7i	131 mm	100 mm	76 mm	532 g	600	n	Feb 2017	US$ 749	ebay.com
12.		Canon T100	129 mm	102 mm	77 mm	436 g	500	n	Feb 2018	US$ 399	amazon.com
13.		Leica M10	139 mm	80 mm	39 mm	660 g	210	Y	Jan 2017	US$ 6 599	ebay.com
14.		Leica S2	160 mm	120 mm	80 mm	1410 g	..	Y	Sep 2008	US$ 22 999	ebay.com
15.		Leica S Typ 006	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2012	US$ 21 949	ebay.com
16.		Leica S-E Typ 006	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2014	US$ 16 599	ebay.com
17.		Leica S Typ 007	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2014	US$ 24 499	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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The T7 was launched at a markedly lower price (by 98 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants 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 more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon T7 features an APS-C sensor and the Leica S3 a medium format sensor. The sensor area in the S3 is 307 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 64MP, the S3 offers a higher resolution than the T7 (24MP), but the S3 nevertheless has larger individual pixels (pixel pitch of 4.59μm versus 3.72μm for the T7) due to its larger sensor. Moreover, the S3 is a somewhat more recent model (by 6 months) than the T7, and its sensor might 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 S3 has no anti-alias filter installed, so that it can capture all the detail its 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 Canon T7 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 Canon EOS Rebel T7 has a native sensitivity range from ISO 100 to ISO 6400, which can be extended to ISO 100-12800. The corresponding ISO settings for the Leica S3 are ISO 100 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 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 T7	APS-C	24.0	6000	4000	1080/30p	23.8	13.3	1684	81
2.		Leica S3	Medium Format	64.0	9800	6533	4K/24p	25.6	14.4	3143	98
3.		Canon 77D	APS-C	24.0	6000	4000	1080/60p	23.6	13.3	971	78
4.		Canon SL2	APS-C	24.0	6000	4000	1080/60p	23.6	13.4	1041	79
5.		Canon SL3	APS-C	24.0	6000	4000	4K/25p	23.9	13.4	1791	82
6.		Canon T3	APS-C	12.2	4272	2848	720/30p	21.9	11.0	755	62
7.		Canon T5	APS-C	17.9	5184	3456	1080/30p	21.9	11.3	724	63
8.		Canon T6	APS-C	17.9	5184	3456	1080/30p	22.0	11.7	781	66
9.		Canon T6i	APS-C	24.0	6000	4000	1080/30p	22.7	12.0	919	71
10.		Canon T6s	APS-C	24.0	6000	4000	1080/30p	22.6	12.0	915	70
11.		Canon T7i	APS-C	24.0	6000	4000	1080/60p	23.7	13.1	1586	80
12.		Canon T100	APS-C	17.9	5184	3456	1080/30p	21.9	11.4	695	63
13.		Leica M10	Full Frame	23.8	5952	3992	none	24.4	13.2	2133	86
14.		Leica S2	Medium Format	37.5	7500	5000	none	23.9	12.5	2224	82
15.		Leica S Typ 006	Medium Format	37.5	7500	5000	none	23.9	12.2	824	76
16.		Leica S-E Typ 006	Medium Format	37.5	7500	5000	none	25.1	13.7	2763	93
17.		Leica S Typ 007	Medium Format	37.5	7500	5000	4K/24p	25.1	13.7	2763	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 can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the S3 provides a better video resolution than the T7. It can shoot movie footage at 4K/24p, while the Canon is limited to 1080/30p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. The T7 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 S3 offers a wider field of view (98%) than the one in the T7 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the S3 has a higher magnification (0.87x vs 0.50x), 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 Canon T7 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.		Canon T7	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	Y	n
2.		Leica S3	optical	Y	3.0 / 922	fixed	n	1/4000s	3.0/s	n	n
3.		Canon 77D	optical	Y	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	n
4.		Canon SL2	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
5.		Canon SL3	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
6.		Canon T3	optical	n	2.7 / 230	fixed	n	1/4000s	3.0/s	Y	n
7.		Canon T5	optical	n	3.0 / 460	fixed	n	1/4000s	3.0/s	Y	n
8.		Canon T6	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	Y	n
9.		Canon T6i	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
10.		Canon T6s	optical	Y	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
11.		Canon T7i	optical	n	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	n
12.		Canon T100	optical	n	2.7 / 230	fixed	n	1/4000s	3.0/s	Y	n
13.		Leica M10	optical	n	3.0 / 1037	fixed	n	1/4000s	5.0/s	n	n
14.		Leica S2	optical	Y	3.0 / 460	fixed	n	1/4000s	1.5/s	n	n
15.		Leica S Typ 006	optical	Y	3.0 / 922	fixed	n	1/4000s	1.5/s	n	n
16.		Leica S-E Typ 006	optical	Y	3.0 / 922	fixed	n	1/4000s	1.5/s	n	n
17.		Leica S Typ 007	optical	Y	3.0 / 922	fixed	n	1/4000s	3.5/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 T7 has one, while the S3 does not. While the built-in flash of the T7 is not very powerful, it can at times be useful as a fill-in light.

The T7 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 T7 only has one slot. The S3 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the T7 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 Rebel T7 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.		Canon T7	Y	mono / mono	-	-	mini	2.0	Y	Y	-
2.		Leica S3	Y	stereo / mono	Y	Y	mini	3.0	Y	-	-
3.		Canon 77D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
4.		Canon SL2	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
5.		Canon SL3	Y	stereo / mono	Y	-	mini	2.0	Y	-	Y
6.		Canon T3	Y	stereo / mono	-	-	mini	2.0	-	-	-
7.		Canon T5	Y	mono / mono	-	-	mini	2.0	-	-	-
8.		Canon T6	Y	mono / mono	-	-	mini	2.0	Y	Y	-
9.		Canon T6i	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
10.		Canon T6s	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
11.		Canon T7i	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
12.		Canon T100	Y	mono / mono	-	-	mini	2.0	Y	Y	-
13.		Leica M10	Y	- / -	-	-	-	-	Y	-	-
14.		Leica S2	Y	- / -	-	-	mini	2.0	-	-	-
15.		Leica S Typ 006	Y	- / -	-	-	mini	2.0	-	-	-
16.		Leica S-E Typ 006	Y	- / -	-	-	mini	2.0	-	-	-
17.		Leica S Typ 007	Y	stereo / mono	Y	Y	mini	3.0	Y	-	-

It is notable that the S3 has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The T7 lacks such a headphone port.

Studio photographers will appreciate that the Leica S3 (unlike the T7) 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.

The T7 is a recent model that features in the current product line-up of Canon. In contrast, the S3 has been discontinued (but can be found pre-owned on ebay). There has not been a direct replacement model for the S3 from Leica. Further information on the features and operation of the T7 and S3 can be found, respectively, in the Canon T7 Manual (free pdf) or the online Leica S3 Manual.

Review summary

So how do things add up? Which of the two cameras – the Canon T7 or the Leica S3 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

Arguments in favor of the Canon EOS Rebel T7:

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• More compact: Is smaller (129x101mm vs 160x120mm) and thus needs less room in the bag.
• Less heavy: Is lighter (by 785g or 62 percent) and hence easier to carry around.
• Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
• Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
• More affordable: Was introduced into a lower priced category (98 percent cheaper at launch).
• More heavily discounted: Has been on the market for longer (launched in February 2018).

Advantages of the Leica S3:

• More detail: Has more megapixels (64 vs 24MP), which boosts linear resolution by 63%.
• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Better image quality: Is equipped with a larger and more technologically advanced sensor.
• Richer colors: The sensor size advantage translates into images with better, more accurate colors.
• More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
• Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
• Better video: Provides higher definition movie capture (4K/24p vs 1080/30p).
• Better sound: Can connect to an external microphone for higher quality sound recording.
• Better sound control: Has a headphone port that enables audio monitoring while recording.
• More complete view: Has a viewfinder with a larger field of view (98% vs 95%).
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.87x vs 0.50x).
• Easier setting verification: Features a control panel on top to check shooting parameters.
• Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
• Easier geotagging: Features an internal GPS sensor to log localization data.
• Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
• 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 prestigious: Has the Leica luxury appeal, which ensures a high resale value.
• More modern: Was introduced somewhat (6 months) more recently.

If the count of relative strengths (bullet points above) is taken as a measure, the S3 is the clear winner of the contest (20 : 7 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.

How about other alternatives? Do the specifications of the Canon T7 and the Leica S3 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the T7 or the S3. 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 expert reviews 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	Street Price
1.		Canon T7	..	o	3.5/5	..	3.5/5	3.5/5	Feb 2018	US$ 449	amazon.com
2.		Leica S3	..	..	..	..	..	..	Sep 2018	US$ 18 999	ebay.com
3.		Canon 77D	4.5/5	..	4/5	82/100	4.5/5	4/5	Feb 2017	US$ 899	ebay.com
4.		Canon SL2	4/5	+ +	4/5	78/100	4.5/5	4.5/5	Jun 2017	US$ 549	ebay.com
5.		Canon SL3	4/5	o	4.5/5	79/100	4/5	4/5	Apr 2019	US$ 599	amazon.com
6.		Canon T3	..	80/100	..	69/100	4/5	4.5/5	Feb 2011	US$ 449	ebay.com
7.		Canon T5	3/5	+	..	..	4/5	4.5/5	Feb 2014	US$ 449	ebay.com
8.		Canon T6	4/5	o	4/5	73/100	4/5	4/5	Mar 2016	US$ 449	ebay.com
9.		Canon T6i	5/5	..	..	75/100	4.5/5	4.5/5	Feb 2015	US$ 749	ebay.com
10.		Canon T6s	5/5	+	..	77/100	4.5/5	4.5/5	Feb 2015	US$ 649	ebay.com
11.		Canon T7i	4.5/5	..	3.5/5	80/100	4.5/5	4/5	Feb 2017	US$ 749	ebay.com
12.		Canon T100	..	o	3/5	..	3.5/5	3.5/5	Feb 2018	US$ 399	amazon.com
13.		Leica M10	4.5/5	..	..	..	4/5	4.5/5	Jan 2017	US$ 6 599	ebay.com
14.		Leica S2	..	..	..	..	..	..	Sep 2008	US$ 22 999	ebay.com
15.		Leica S Typ 006	..	..	..	..	..	..	Sep 2012	US$ 21 949	ebay.com
16.		Leica S-E Typ 006	..	..	..	..	..	..	Sep 2014	US$ 16 599	ebay.com
17.		Leica S Typ 007	4/5	..	..	..	..	..	Sep 2014	US$ 24 499	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, 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 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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Other camera comparisons

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