Canon SX720 vs Leica S3

The Canon PowerShot SX720 HS and the Leica S3 are two digital cameras that were announced, respectively, in February 2016 and September 2018. The SX720 is a fixed lens compact, while the S3 is a DSLR. The cameras are based on a 1/2.3-inch (SX720) and a medium format (S3) sensor. The Canon has a resolution of 20.2 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 SX720		Leica S3
Fixed lens compact camera		Digital single lens reflex
24-960mm f/3.3-6.9		Leica S mount lenses
20.2 MP – 1/2.3" sensor		64 MP – Medium Format sensor
1080/60p Video		4K/24p Video
ISO 80-3,200		ISO 100-50,000
No viewfinder, LCD framing		Optical viewfinder
3.0" LCD – 922k dots		3.0" LCD – 922k dots
Fixed screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
5.9 shutter flaps per second		3 shutter flaps per second
not weather sealed		Weathersealed body
110 x 64 x 36 mm, 270 g		160 x 120 x 80 mm, 1260 g

Check SX720 offers at
ebay.com
Check S3 price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot SX720 HS 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 physical size and weight of the Canon SX720 and the Leica S3 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 measures are rounded to the nearest millimeter.

The SX720 can be obtained in two different colors (black, red), 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 (173 percent) than the Canon SX720. It is noteworthy in this context that the S3 is splash and dust-proof, while the SX720 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the SX720 has a lens built in, whereas the S3 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons 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 SX720	110 mm	64 mm	36 mm	270 g	250	n	Feb 2016	379	ebay.com
2.		Leica S3	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2018	18,995	amazon.com
3.		Canon SX740	110 mm	64 mm	40 mm	299 g	265	n	Jul 2018	399	amazon.com
4.		Canon SX430	104 mm	69 mm	85 mm	323 g	195	n	Jan 2017	299	amazon.com
5.		Canon SX730	110 mm	64 mm	40 mm	300 g	250	n	Apr 2017	399	ebay.com
6.		Canon SX420	104 mm	69 mm	85 mm	325 g	195	n	Jan 2016	299	ebay.com
7.		Canon SX540	120 mm	82 mm	92 mm	442 g	205	n	Jan 2016	399	ebay.com
8.		Canon SX410	104 mm	69 mm	85 mm	325 g	185	n	Feb 2015	279	ebay.com
9.		Canon SX710	113 mm	66 mm	35 mm	269 g	230	n	Jan 2015	349	ebay.com
10.		Leica M10	139 mm	80 mm	39 mm	660 g	210	Y	Jan 2017	6,595	ebay.com
11.		Leica S-E Typ 006	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2014	16,900	ebay.com
12.		Leica S Typ 007	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2014	24,490	ebay.com
13.		Leica S Typ 006	160 mm	120 mm	80 mm	1260 g	..	Y	Sep 2012	21,950	ebay.com
14.		Leica S2	160 mm	120 mm	80 mm	1410 g	..	Y	Sep 2008	22,995	ebay.com
15.		Panasonic ZS70	112 mm	67 mm	41 mm	322 g	380	n	Apr 2017	449	ebay.com
16.		Sony HX80	102 mm	58 mm	36 mm	245 g	390	n	Mar 2016	349	ebay.com
17.		Sony HX90V	102 mm	58 mm	36 mm	245 g	360	n	Apr 2015	429	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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The SX720 was launched at a lower price than the S3, despite having a lens built in. 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 size of the sensor inside a digital camera is one of the key determinants 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 Canon SX720 features a 1/2.3-inch sensor and the Leica S3 a medium format sensor. The sensor area in the S3 is 4721 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 0.8. The sensor in the SX720 has a native 4:3 aspect ratio, while the one in the S3 offers a 3:2 aspect.

With 64MP, the S3 offers a higher resolution than the SX720 (20.2MP), but the S3 nevertheless has larger individual pixels (pixel pitch of 4.59μm versus 1.18μm for the SX720) due to its larger sensor. Moreover, the S3 is a much more recent model (by 2 years and 7 months) than the SX720, 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 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 Canon SX720 are 25.9 x 19.4 inches or 65.8 x 49.4 cm for good quality, 20.7 x 15.6 inches or 52.7 x 39.5 cm for very good quality, and 17.3 x 13 inches or 43.9 x 32.9 cm for excellent quality prints.

The Canon PowerShot SX720 HS has a native sensitivity range from ISO 80 to ISO 3200. The corresponding ISO settings for the Leica S3 are ISO 100 to ISO 50000 (no boost).

In terms of underlying technology, the SX720 is build around a BSI-CMOS sensor, while the S3 uses a 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.

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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.		Canon SX720	1/2.3	20.2	5184	3888	1080/60p	20.3	11.8	817	48
2.		Leica S3	Medium Format	64.0	9800	6533	4K/24p	25.6	14.4	3143	98
3.		Canon SX740	1/2.3	20.2	5184	3888	4K/30p	20.6	12.1	1050	51
4.		Canon SX430	1/2.3	19.9	5152	3864	720/25p	20.5	11.9	900	49
5.		Canon SX730	1/2.3	20.2	5184	3888	1080/60p	20.5	11.9	924	50
6.		Canon SX420	1/2.3	19.9	5152	3864	720/25p	20.3	11.7	806	48
7.		Canon SX540	1/2.3	20.2	5184	3888	1080/60p	20.3	11.7	806	48
8.		Canon SX410	1/2.3	19.9	5152	3864	720/30p	20.2	11.6	720	47
9.		Canon SX710	1/2.3	20.2	5184	3888	1080/60p	20.2	11.6	712	47
10.		Leica M10	Full Frame	23.8	5952	3992	none	24.4	13.2	2133	86
11.		Leica S-E Typ 006	Medium Format	37.5	7500	5000	none	25.1	13.7	2763	93
12.		Leica S Typ 007	Medium Format	37.5	7500	5000	4K/24p	25.1	13.7	2763	93
13.		Leica S Typ 006	Medium Format	37.5	7500	5000	none	23.9	12.2	824	76
14.		Leica S2	Medium Format	37.5	7500	5000	none	23.9	12.5	2224	82
15.		Panasonic ZS70	1/2.3	20.2	5184	3888	4K/30p	19.1	10.6	106	36
16.		Sony HX80	1/2.3	18.0	4896	3672	1080/60p	20.4	11.8	822	48
17.		Sony HX90V	1/2.3	18.0	4896	3672	1080/60p	20.2	11.6	738	47
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras cannot only take still pictures, but also record videos. 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 SX720. It can shoot movie footage at 4K/24p, while the Canon is limited to 1080/60p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the S3 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the SX720 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Canon SX720 and Leica S3 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 SX720	none	n	3.0 / 922	fixed	n	1/3200s	5.9/s	Y	Y
2.		Leica S3	optical	Y	3.0 / 922	fixed	n	1/4000s	3.0/s	n	n
3.		Canon SX740	none	n	3.0 / 922	tilting	n	1/3200s	10.0/s	Y	Y
4.		Canon SX430	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
5.		Canon SX730	none	n	3.0 / 922	tilting	n	1/3200s	5.9/s	Y	Y
6.		Canon SX420	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
7.		Canon SX540	none	n	3.0 / 461	fixed	n	1/2000s	5.9/s	Y	Y
8.		Canon SX410	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
9.		Canon SX710	none	n	3.0 / 922	fixed	n	1/3200s	6.0/s	Y	Y
10.		Leica M10	optical	n	3.0 / 1037	fixed	n	1/4000s	5.0/s	n	n
11.		Leica S-E Typ 006	optical	Y	3.0 / 922	fixed	n	1/4000s	1.5/s	n	n
12.		Leica S Typ 007	optical	Y	3.0 / 922	fixed	n	1/4000s	3.5/s	n	n
13.		Leica S Typ 006	optical	Y	3.0 / 922	fixed	n	1/4000s	1.5/s	n	n
14.		Leica S2	optical	Y	3.0 / 460	fixed	n	1/4000s	1.5/s	n	n
15.		Panasonic ZS70	1166	n	3.0 / 1040	tilting	Y	1/2000s	10.0/s	Y	Y
16.		Sony HX80	638	n	3.0 / 922	tilting	n	1/2000s	10.0/s	Y	Y
17.		Sony HX90V	638	n	3.0 / 921	tilting	n	1/2000s	10.0/s	Y	Y
Notes: *) 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 SX720 has one, while the S3 does not. While the built-in flash of the SX720 is not very powerful, it can at times be useful as a fill-in light.

The SX720 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 SX720 only has one slot. The S3 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the SX720 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 Canon PowerShot SX720 HS 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 SX720	-	stereo / mono	-	-	micro	2.0	Y	Y	-
2.		Leica S3	Y	stereo / mono	Y	Y	mini	3.0	Y	-	-
3.		Canon SX740	-	stereo / mono	-	-	micro	2.0	Y	-	Y
4.		Canon SX430	-	mono / mono	-	-	-	2.0	Y	Y	-
5.		Canon SX730	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
6.		Canon SX420	-	mono / mono	-	-	-	2.0	Y	Y	-
7.		Canon SX540	-	stereo / mono	-	-	mini	2.0	Y	Y	-
8.		Canon SX410	-	stereo / mono	-	-	-	2.0	-	-	-
9.		Canon SX710	-	stereo / mono	-	-	micro	2.0	Y	Y	-
10.		Leica M10	Y	- / -	-	-	-	-	Y	-	-
11.		Leica S-E Typ 006	Y	- / -	-	-	mini	2.0	-	-	-
12.		Leica S Typ 007	Y	stereo / mono	Y	Y	mini	3.0	Y	-	-
13.		Leica S Typ 006	Y	- / -	-	-	mini	2.0	-	-	-
14.		Leica S2	Y	- / -	-	-	mini	2.0	-	-	-
15.		Panasonic ZS70	-	stereo / mono	-	-	micro	2.0	Y	-	-
16.		Sony HX80	-	stereo / mono	-	-	micro	2.0	Y	Y	-
17.		Sony HX90V	-	stereo / mono	-	-	micro	2.0	Y	Y	-

It is notable that the S3 has a microphone port, which can help to improve the quality of audio recordings by attaching an external microphone. The SX720 does not feature such a mic input.

Studio photographers will appreciate that the Leica S3 (unlike the SX720) 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 S3 is a recent model that features in the current product line-up of Leica. In contrast, the SX720 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the SX720 was succeeded by the Canon SX730. Further information on the features and operation of the SX720 and S3 can be found, respectively, in the Canon SX720 Manual (free pdf) or the online Leica S3 Manual.

Review summary

So what is the bottom line? Which of the two cameras – the Canon SX720 or the Leica S3 – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.

Reasons to prefer the Canon PowerShot SX720 HS:

• Faster burst: Shoots at higher frequency (5.9 vs 3 flaps/sec) to capture the decisive moment.
• Ready to shoot: Comes with a built-in lens, while the S3 requires a separate lens.
• More compact: Is smaller (110x64mm vs 160x120mm) and thus needs less room in the bag.
• Less heavy: Is lighter even though it comes with a built-in lens (unlike the S3).
• Sharper images: Has hand-shake reducing image stabilization built-in.
• 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 at a lower price, despite coming with a built-in lens.
• More heavily discounted: Has been available for much longer (launched in February 2016).

Advantages of the Leica S3:

• More detail: Has more megapixels (64 vs 20.2MP), which boosts linear resolution by 82%.
• 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 1080/60p).
• 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.
• Easier framing: Has an optical viewfinder for image composition and settings control.
• Easier setting verification: Features a control panel on top to check shooting parameters.
• Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/3200s) to freeze action.
• More flexible: Makes it possible to change lenses and thus to use specialty optics.
• Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• 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: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
• More prestigious: Has the Leica luxury appeal, which ensures a high resale value.
• More modern: Reflects 2 years and 7 months of technical progress since the SX720 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the S3 is the clear winner of the contest (21 : 9 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 SX720 and the Leica S3 place the cameras among the top in their class? Find out in the latest Best Superzoom Camera and Best DSLR 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 remains incomplete and does no justice, for example, to the way the SX720 or the S3 perform in practice. 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 (USD)	Street Price
1.		Canon SX720	..	+	..	..	4/5	4.5/5	Feb 2016	379	ebay.com
2.		Leica S3	..	..	..	..	..	..	Sep 2018	18,995	amazon.com
3.		Canon SX740	..	+	3.5/5	..	4/5	4/5	Jul 2018	399	amazon.com
4.		Canon SX430	..	..	..	..	3.5/5	3.5/5	Jan 2017	299	amazon.com
5.		Canon SX730	..	+	..	..	4/5	4/5	Apr 2017	399	ebay.com
6.		Canon SX420	..	..	..	..	..	3/5	Jan 2016	299	ebay.com
7.		Canon SX540	..	..	..	..	..	..	Jan 2016	399	ebay.com
8.		Canon SX410	..	o	..	..	..	..	Feb 2015	279	ebay.com
9.		Canon SX710	..	+	..	..	4/5	3.5/5	Jan 2015	349	ebay.com
10.		Leica M10	4.5/5	..	..	..	4/5	4.5/5	Jan 2017	6,595	ebay.com
11.		Leica S-E Typ 006	..	..	..	..	..	..	Sep 2014	16,900	ebay.com
12.		Leica S Typ 007	4/5	..	..	..	..	..	Sep 2014	24,490	ebay.com
13.		Leica S Typ 006	..	..	..	..	..	..	Sep 2012	21,950	ebay.com
14.		Leica S2	..	..	..	..	..	..	Sep 2008	22,995	ebay.com
15.		Panasonic ZS70	..	+ +	..	..	4/5	4/5	Apr 2017	449	ebay.com
16.		Sony HX80	..	..	..	..	..	..	Mar 2016	349	ebay.com
17.		Sony HX90V	4/5	+ +	..	..	4/5	4.5/5	Apr 2015	429	ebay.com
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated 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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.

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Other camera comparisons

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