Canon SX720 vs Contax N Digital

The Canon PowerShot SX720 HS and the Contax N Digital are two digital cameras that were announced, respectively, in February 2016 and February 2002. The SX720 is a fixed lens compact, while the N Digital is a DSLR. The cameras are based on a 1/2.3-inch (SX720) and a full frame (N Digital) sensor. The Canon has a resolution of 20.2 megapixels, whereas the Contax provides 6.1 MP.

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

Headline Specifications

Canon SX720		Contax N Digital
Fixed lens compact camera		Digital single lens reflex
24-960mm f/3.3-6.9		Contax N mount lenses
20.2 MP – 1/2.3" sensor		6.1 MP – Full Frame sensor
1080/60p Video		no Video
ISO 80-3,200		ISO 50-1,600
No viewfinder, LCD framing		Optical viewfinder
3.0" LCD – 922k dots		2.0" LCD – 200k dots
Fixed screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
5.9 shutter flaps per second		4 shutter flaps per second
250 shots per battery charge		100 shots per battery charge
110 x 64 x 36 mm, 270 g		152 x 138 x 80 mm, 990 g

Check SX720 offers at
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Check N Digital offers at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot SX720 HS and the Contax N Digital? 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 Contax N Digital 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 N Digital 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 Contax N Digital is considerably larger (198 percent) than the Canon SX720. In this context, it is worth noting that neither the SX720 nor the N Digital are weather-sealed.

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

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

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	Street Price
1.		Canon SX720	110 mm	64 mm	36 mm	270 g	250	n	Feb 2016	EUR 329	ebay.com
2.		Contax N Digital	152 mm	138 mm	80 mm	990 g	100	n	Feb 2002	EUR 7 499	ebay.com
3.		Canon 10D	150 mm	107 mm	75 mm	850 g	500	n	Feb 2003	EUR 1 999	ebay.com
4.		Canon 300D	142 mm	99 mm	72 mm	649 g	400	n	Aug 2003	EUR 1 095	ebay.com
5.		Canon D60	150 mm	107 mm	75 mm	855 g	620	n	Feb 2002	EUR 2 999	ebay.com
6.		Canon G7 X Mark II	106 mm	61 mm	42 mm	319 g	265	n	Feb 2016	EUR 685	ebay.com
7.		Canon SX410	104 mm	69 mm	85 mm	325 g	185	n	Feb 2015	EUR 279	ebay.com
8.		Canon SX420	104 mm	69 mm	85 mm	325 g	195	n	Jan 2016	EUR 299	ebay.com
9.		Canon SX540	120 mm	82 mm	92 mm	442 g	205	n	Jan 2016	EUR 369	ebay.com
10.		Canon SX710	113 mm	66 mm	35 mm	269 g	230	n	Jan 2015	EUR 299	ebay.com
11.		Canon SX730	110 mm	64 mm	40 mm	300 g	250	n	Apr 2017	EUR 399	ebay.com
12.		Canon SX740	110 mm	64 mm	40 mm	299 g	265	n	Jul 2018	EUR 399	amazon.com
13.		Nikon D1X	157 mm	153 mm	85 mm	1100 g	1200	Y	Feb 2001	EUR 7 999	ebay.com
14.		Nikon D100	144 mm	116 mm	81 mm	780 g	370	n	Feb 2002	EUR 2 499	ebay.com
15.		Panasonic TZ90	112 mm	67 mm	41 mm	322 g	380	n	Apr 2017	EUR 429	ebay.com
16.		Sony HX80	102 mm	58 mm	36 mm	245 g	390	n	Mar 2016	EUR 449	ebay.com
17.		Sony HX90V	102 mm	58 mm	36 mm	245 g	360	n	Apr 2015	EUR 469	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 N Digital, 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. 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.

Of the two cameras under consideration, the Canon SX720 features a 1/2.3-inch sensor and the Contax N Digital a full frame sensor. The sensor area in the N Digital is 2986 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 1.0. The sensor in the SX720 has a native 4:3 aspect ratio, while the one in the N Digital offers a 3:2 aspect.

Despite having a smaller sensor, the Canon SX720 offers a higher resolution of 20.2 megapixels, compared with 6.1 MP of the Contax N Digital. 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 1.18μm versus 11.90μm for the N Digital). However, it should be noted that the SX720 is much more recent (by 13 years and 11 months) than the N Digital, 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 the SX720 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Canon SX720 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the SX720 for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 cm. The corresponding values for the Contax N Digital are 15.2 x 10 inches or 38.6 x 25.5 cm for good quality, 12.2 x 8 inches or 30.9 x 20.4 cm for very good quality, and 10.1 x 6.7 inches or 25.7 x 17 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 Contax N Digital are ISO 50 to ISO 1600 (no boost).

In terms of underlying technology, the SX720 is build around a BSI-CMOS sensor, while the N Digital 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 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 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 SX720	1/2.3	20.2	5184	3888	1080/60p	20.3	11.8	817	48
2.		Contax N Digital	Full Frame	6.1	3040	2008	none	21.5	10.5	1283	59
3.		Canon 10D	APS-C	6.3	3072	2048	none	21.1	10.9	571	57
4.		Canon 300D	APS-C	6.3	3072	2048	none	21.0	10.8	544	55
5.		Canon D60	APS-C	6.3	3072	2048	none	20.3	9.8	301	47
6.		Canon G7 X Mark II	1-inch	20.0	5472	3648	1080/60p	21.8	11.9	260	62
7.		Canon SX410	1/2.3	19.9	5152	3864	720/30p	20.2	11.6	720	47
8.		Canon SX420	1/2.3	19.9	5152	3864	720/25p	20.3	11.7	806	48
9.		Canon SX540	1/2.3	20.2	5184	3888	1080/60p	20.3	11.7	806	48
10.		Canon SX710	1/2.3	20.2	5184	3888	1080/60p	20.2	11.6	712	47
11.		Canon SX730	1/2.3	20.2	5184	3888	1080/60p	20.5	11.9	924	50
12.		Canon SX740	1/2.3	20.2	5184	3888	4K/30p	20.6	12.1	1050	51
13.		Nikon D1X	APS-C	5.9	3008	1960	none	..	..	..	..
14.		Nikon D100	APS-C	6.0	3008	2000	none	20.4	9.9	394	48
15.		Panasonic TZ90	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 SX720 indeed provides movie recording capabilities, while the N Digital does not. The highest resolution format that the SX720 can use is 1080/60p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the N Digital 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 Contax N Digital 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.		Contax N Digital	optical	Y	2.0 / 200	fixed	n	1/8000s	4.0/s	n	n
3.		Canon 10D	optical	Y	1.8 / 118	fixed	n	1/4000s	3.0/s	Y	n
4.		Canon 300D	optical	n	1.8 / 118	fixed	n	1/4000s	2.5/s	Y	n
5.		Canon D60	optical	Y	1.8 / 114	fixed	n	1/4000s	3.0/s	Y	n
6.		Canon G7 X Mark II	none	n	3.0 / 1040	tilting	Y	1/2000s	8.0/s	Y	Y
7.		Canon SX410	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
8.		Canon SX420	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
9.		Canon SX540	none	n	3.0 / 461	fixed	n	1/2000s	5.9/s	Y	Y
10.		Canon SX710	none	n	3.0 / 922	fixed	n	1/3200s	6.0/s	Y	Y
11.		Canon SX730	none	n	3.0 / 922	tilting	n	1/3200s	5.9/s	Y	Y
12.		Canon SX740	none	n	3.0 / 922	tilting	n	1/3200s	10.0/s	Y	Y
13.		Nikon D1X	optical	Y	2.0 / 120	fixed	n	1/16000s	3.0/s	n	n
14.		Nikon D100	optical	Y	1.8 / 118	fixed	n	1/4000s	3.0/s	Y	n
15.		Panasonic TZ90	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
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 SX720 has one, while the N Digital 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 N Digital uses Compact Flash 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 PowerShot SX720 HS and Contax N Digital 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.		Contax N Digital	Y	- / -	-	-	-	FW	-	-	-
3.		Canon 10D	Y	- / -	-	-	-	1.1	-	-	-
4.		Canon 300D	Y	- / -	-	-	-	1.1	-	-	-
5.		Canon D60	Y	- / -	-	-	-	1.1	-	-	-
6.		Canon G7 X Mark II	-	stereo / mono	-	-	micro	2.0	Y	Y	-
7.		Canon SX410	-	stereo / mono	-	-	-	2.0	-	-	-
8.		Canon SX420	-	mono / mono	-	-	-	2.0	Y	Y	-
9.		Canon SX540	-	stereo / mono	-	-	mini	2.0	Y	Y	-
10.		Canon SX710	-	stereo / mono	-	-	micro	2.0	Y	Y	-
11.		Canon SX730	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
12.		Canon SX740	-	stereo / mono	-	-	micro	2.0	Y	-	Y
13.		Nikon D1X	Y	- / -	-	-	-	FW	-	-	-
14.		Nikon D100	Y	- / -	-	-	-	1.1	-	-	-
15.		Panasonic TZ90	-	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 SX720 offers wifi support, while the N Digital does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Studio photographers will appreciate that the Contax N Digital (unlike the SX720) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the SX720 and the N Digital have been discontinued, but can regularly be found used on ebay. The SX720 was replaced by the Canon SX730, while the N Digital does not have a direct successor. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Contax websites.

Review summary

So what conclusions can be drawn? Which of the two cameras – the Canon SX720 or the Contax N Digital – 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:

• More detail: Offers more megapixels (20.2 vs 6.1MP) with a 78% higher linear resolution.
• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Broader imaging potential: Can record not only still images but also 1080/60p movies.
• Larger screen: Has a bigger rear LCD (3.0" vs 2.0") for image review and settings control.
• More detailed LCD: Has a higher resolution rear screen (922k vs 200k dots).
• Faster burst: Shoots at higher frequency (5.9 vs 4 flaps/sec) to capture the decisive moment.
• Ready to shoot: Comes with a built-in lens, while the N Digital requires a separate lens.
• More compact: Is smaller (110x64mm vs 152x138mm) and thus needs less room in the bag.
• Less heavy: Is lighter even though it comes with a built-in lens (unlike the N Digital).
• Longer lasting: Can take more shots (250 versus 100) on a single battery charge.
• 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 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.
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More modern: Reflects 13 years and 11 months of technical progress since the N Digital launch.

Advantages of the Contax N Digital:

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
• Richer colors: The pixel size advantage translates into images with better, more accurate colors.
• More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
• Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
• 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 (1/8000s vs 1/3200s) to freeze action.
• More flexible: Makes it possible to change lenses and thus to use specialty optics.
• More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
• 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 heavily discounted: Has been around for much longer (launched in February 2002).

If the count of relative strengths (bullet points above) is taken as a measure, the SX720 emerges as the winner of the contest (16 : 13 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 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 Contax N Digital 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 N Digital 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	Street Price
1.		Canon SX720	..	+	..	..	4/5	4.5/5	Feb 2016	EUR 329	ebay.com
2.		Contax N Digital	..	..	..	..	..	..	Feb 2002	EUR 7 499	ebay.com
3.		Canon 10D	..	..	..	+ +	..	..	Feb 2003	EUR 1 999	ebay.com
4.		Canon 300D	..	..	..	+ +	..	..	Aug 2003	EUR 1 095	ebay.com
5.		Canon D60	..	..	..	+ +	o	..	Feb 2002	EUR 2 999	ebay.com
6.		Canon G7 X Mark II	4.5/5	+ +	..	81/100	4.5/5	4.5/5	Feb 2016	EUR 685	ebay.com
7.		Canon SX410	..	o	..	..	..	..	Feb 2015	EUR 279	ebay.com
8.		Canon SX420	..	..	..	..	..	3/5	Jan 2016	EUR 299	ebay.com
9.		Canon SX540	..	..	..	..	..	..	Jan 2016	EUR 369	ebay.com
10.		Canon SX710	..	+	..	..	4/5	3.5/5	Jan 2015	EUR 299	ebay.com
11.		Canon SX730	..	+	..	..	4/5	4/5	Apr 2017	EUR 399	ebay.com
12.		Canon SX740	..	+	3.5/5	..	4/5	4/5	Jul 2018	EUR 399	amazon.com
13.		Nikon D1X	..	..	..	+ +	..	..	Feb 2001	EUR 7 999	ebay.com
14.		Nikon D100	..	..	..	+ +	o	..	Feb 2002	EUR 2 499	ebay.com
15.		Panasonic TZ90	..	+ +	4/5	..	4/5	4/5	Apr 2017	EUR 429	ebay.com
16.		Sony HX80	..	..	..	..	..	..	Mar 2016	EUR 449	ebay.com
17.		Sony HX90V	4/5	+ +	..	..	4/5	4.5/5	Apr 2015	EUR 469	ebay.com
Note: (+ +) 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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