Canon 7D vs SX510

The Canon EOS 7D and the Canon PowerShot SX510 HS are two digital cameras that were revealed to the public, respectively, in September 2009 and August 2013. The 7D is a DSLR, while the SX510 is a fixed lens compact. The cameras are based on an APS-C (7D) and a 1/2.3-inch (SX510) sensor. The 7D has a resolution of 17.9 megapixels, whereas the SX510 provides 15.9 MP.

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

Headline Specifications

Canon 7D		Canon SX510
Digital single lens reflex		Fixed lens compact camera
Canon EF mount lenses		24-720mm f/3.4-5.8
17.9 MP – APS-C sensor		15.9 MP – 1/2.3" sensor
1080/30p Video		1080/24p Video
ISO 100-6,400 (100 - 12,800)		ISO 80-3,200
Optical viewfinder		No viewfinder, LCD framing
3.0" LCD – 920k dots		3.0" LCD – 461k dots
Fixed screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
8 shutter flaps per second		3.8 shutter flaps per second
Weathersealed body		not weather sealed
800 shots per battery charge		250 shots per battery charge
148 x 111 x 74 mm, 860 g		104 x 70 x 80 mm, 349 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 7D and the Canon PowerShot SX510 HS? 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

An illustration of the physical size and weight of the Canon 7D and the Canon SX510 is provided 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 Canon SX510 is considerably smaller (56 percent) than the Canon 7D. It is worth mentioning in this context that the 7D is splash and dust resistant, while the SX510 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the SX510 has a lens built in, whereas the 7D is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the 7D and their specifications in the Canon EF Lens Catalog.

Concerning battery life, the 7D gets 800 shots out of its LP-E6 battery, while the SX510 can take 250 images on a single charge of its NB-6LH power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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 (USD)	Street Price
1.		Canon 7D	148 mm	111 mm	74 mm	860 g	800	Y	Sep 2009	1,699	ebay.com
2.		Canon SX510	104 mm	70 mm	80 mm	349 g	250	n	Aug 2013	249	ebay.com
3.		Canon 80D	139 mm	105 mm	79 mm	730 g	960	Y	Feb 2016	1,199	ebay.com
4.		Canon G3 X	123 mm	77 mm	105 mm	733 g	300	Y	Jun 2015	999	ebay.com
5.		Canon SX520	120 mm	82 mm	92 mm	441 g	210	n	Jul 2014	399	ebay.com
6.		Canon SX400	104 mm	69 mm	80 mm	313 g	190	n	Jul 2014	249	ebay.com
7.		Canon 7D II	149 mm	112 mm	78 mm	910 g	670	Y	Sep 2014	1,799	ebay.com
8.		Canon 70D	139 mm	104 mm	79 mm	755 g	920	Y	Jul 2013	1,199	ebay.com
9.		Canon SX500	104 mm	70 mm	80 mm	341 g	195	n	Aug 2012	329	ebay.com
10.		Canon M	109 mm	66 mm	32 mm	298 g	230	n	Jul 2012	599	ebay.com
11.		Canon 60D	145 mm	106 mm	79 mm	755 g	1100	Y	Aug 2010	1,399	ebay.com
12.		Canon 1D Mark IV	156 mm	157 mm	80 mm	1230 g	1500	Y	Oct 2009	4,999	ebay.com
13.		Canon 5D Mark II	152 mm	114 mm	75 mm	850 g	850	Y	Sep 2008	3,499	ebay.com
14.		Canon 50D	146 mm	108 mm	74 mm	822 g	800	Y	Aug 2008	1,299	ebay.com
15.		Leica X2	124 mm	69 mm	52 mm	345 g	450	n	May 2012	1,995	ebay.com
16.		Nikon D7000	132 mm	105 mm	77 mm	780 g	1050	Y	Sep 2010	1,499	ebay.com
17.		Sony RX10 III	133 mm	94 mm	127 mm	1051 g	420	Y	Mar 2016	1,499	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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The SX510 was launched at a lower price than the 7D, 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.

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. 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. 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Canon 7D features an APS-C sensor and the Canon SX510 a 1/2.3-inch sensor. The sensor area in the SX510 is 92 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 5.6. The sensor in the 7D has a native 3:2 aspect ratio, while the one in the SX510 offers a 4:3 aspect.

With 17.9MP, the 7D offers a higher resolution than the SX510 (15.9MP), but the 7D nevertheless has larger individual pixels (pixel pitch of 4.31μm versus 1.33μm for the SX510) due to its larger sensor. However, the SX510 is a much more recent model (by 3 years and 11 months) than the 7D, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the SX510 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Canon 7D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 7D for good quality output (200 dots per inch) amounts to 25.9 x 17.3 inches or 65.8 x 43.9 cm, for very good quality (250 dpi) 20.7 x 13.8 inches or 52.7 x 35.1 cm, and for excellent quality (300 dpi) 17.3 x 11.5 inches or 43.9 x 29.3 cm. The corresponding values for the Canon SX510 are 23 x 17.3 inches or 58.5 x 43.9 cm for good quality, 18.4 x 13.8 inches or 46.8 x 35.1 cm for very good quality, and 15.4 x 11.5 inches or 39 x 29.3 cm for excellent quality prints.

The Canon EOS 7D 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 Canon PowerShot SX510 HS are ISO 80 to ISO 3200 (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.

For many cameras, data on sensor performance has been reported by DXO Mark. 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Canon 7D	APS-C	17.9	5184	3456	1080/30p	22.0	11.7	854	66
2.		Canon SX510	1/2.3	15.9	4608	3456	1080/24p	20.0	11.3	586	45
3.		Canon 80D	APS-C	24.0	6000	4000	1080/60p	23.6	13.2	1135	79
4.		Canon G3 X	1-inch	20.0	5472	3648	1080/60p	21.4	12.3	521	63
5.		Canon SX520	1/2.3	15.9	4608	3456	1080/30p	20.1	11.5	672	46
6.		Canon SX400	1/2.3	15.9	4608	3456	720/30p	20.1	11.5	672	46
7.		Canon 7D II	APS-C	20.0	5472	3648	1080/60p	22.4	11.8	1082	70
8.		Canon 70D	APS-C	20.0	5472	3648	1080/30p	22.5	11.6	926	68
9.		Canon SX500	1/2.3	15.9	4608	3456	720/30p	19.8	11.1	494	43
10.		Canon M	APS-C	17.9	5184	3456	1080/30p	22.1	11.2	827	65
11.		Canon 60D	APS-C	17.9	5184	3456	1080/30p	22.2	11.5	813	66
12.		Canon 1D Mark IV	APS-H	16.0	4896	3264	1080/30p	22.8	12.0	1320	74
13.		Canon 5D Mark II	Full Frame	21.0	5616	3744	1080/30p	23.7	11.9	1815	79
14.		Canon 50D	APS-C	15.1	4752	3168	none	21.8	11.4	696	63
15.		Leica X2	APS-C	16.1	4928	3264	none	23.2	12.4	1275	74
16.		Nikon D7000	APS-C	16.1	4928	3264	1080/24p	23.5	13.9	1167	80
17.		Sony RX10 III	1-inch	20.0	5472	3648	4K/30p	23.1	12.6	472	70
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 also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the 7D provides a higher frame rate than the SX510. It can shoot video footage at 1080/30p, while the SX510 is limited to 1080/24p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the 7D has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the SX510 relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the Canon 7D and Canon SX510 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 7D	optical	Y	3.0 / 920	fixed	n	1/8000s	8.0/s	Y	n
2.		Canon SX510	none	n	3.0 / 461	fixed	n	1/1600s	3.8/s	Y	Y
3.		Canon 80D	optical	Y	3.0 / 1040	swivel	Y	1/8000s	7.0/s	Y	n
4.		Canon G3 X	optional	n	3.2 / 1620	tilting	Y	1/2000s	5.9/s	Y	Y
5.		Canon SX520	none	n	3.0 / 461	fixed	n	1/2000s	1.6/s	Y	Y
6.		Canon SX400	none	n	3.0 / 230	fixed	n	1/1600s	0.8/s	Y	Y
7.		Canon 7D II	optical	Y	3.0 / 1040	fixed	n	1/8000s	10.0/s	Y	n
8.		Canon 70D	optical	Y	3.0 / 1040	swivel	Y	1/8000s	7.0/s	Y	n
9.		Canon SX500	none	n	3.0 / 461	fixed	n	1/1600s	0.8/s	Y	Y
10.		Canon M	none	n	3.0 / 1040	fixed	Y	1/4000s	4.3/s	n	n
11.		Canon 60D	optical	Y	3.0 / 1040	swivel	n	1/8000s	5.3/s	Y	n
12.		Canon 1D Mark IV	optical	Y	3.0 / 920	fixed	n	1/8000s	10.0/s	n	n
13.		Canon 5D Mark II	optical	Y	3.0 / 920	fixed	n	1/8000s	3.9/s	n	n
14.		Canon 50D	optical	Y	3.0 / 920	fixed	n	1/8000s	6.3/s	Y	n
15.		Leica X2	optional	n	2.7 / 230	fixed	n	1/2000s	5.0/s	Y	n
16.		Nikon D7000	optical	Y	3.0 / 921	fixed	n	1/8000s	6.0/s	Y	n
17.		Sony RX10 III	2359	Y	3.0 / 1229	tilting	n	1/2000s	14.0/s	Y	Y
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the 7D, but is missing on the SX510 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 7D writes its imaging data to Compact Flash cards, while the SX510 uses SDXC 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 7D and Canon PowerShot SX510 HS 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 7D	Y	mono / -	Y	-	mini	2.0	-	-	-
2.		Canon SX510	-	stereo / mono	-	-	mini	2.0	Y	-	-
3.		Canon 80D	Y	stereo / mono	Y	Y	mini	2.0	Y	Y	-
4.		Canon G3 X	Y	stereo / mono	Y	Y	mini	2.0	Y	Y	-
5.		Canon SX520	-	stereo / mono	-	-	mini	2.0	-	-	-
6.		Canon SX400	-	stereo / mono	-	-	-	2.0	-	-	-
7.		Canon 7D II	Y	stereo / mono	Y	Y	mini	3.0	-	-	-
8.		Canon 70D	Y	stereo / mono	Y	-	mini	2.0	Y	-	-
9.		Canon SX500	-	stereo / mono	-	-	-	2.0	-	-	-
10.		Canon M	Y	stereo / mono	Y	-	mini	2.0	-	-	-
11.		Canon 60D	Y	mono / mono	Y	-	mini	2.0	-	-	-
12.		Canon 1D Mark IV	Y	stereo / -	Y	-	mini	2.0	-	-	-
13.		Canon 5D Mark II	Y	mono / mono	Y	-	mini	2.0	-	-	-
14.		Canon 50D	Y	- / -	-	-	mini	2.0	-	-	-
15.		Leica X2	Y	- / -	-	-	mini	2.0	-	-	-
16.		Nikon D7000	Y	mono / mono	Y	-	mini	2.0	-	-	-
17.		Sony RX10 III	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-

It is notable that the 7D has a hotshoe, while the SX510 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 7D (unlike the SX510) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the 7D and the SX510 have been discontinued, but can regularly be found used on ebay. The 7D was replaced by the Canon 7D Mark II, while the SX510 was followed by the Canon SX520. Further information on the features and operation of the 7D and SX510 can be found, respectively, in the Canon 7D Manual (free pdf) or the online Canon SX510 Manual.

Review summary

So what is the bottom line? Is the Canon 7D better than the Canon SX510 or vice versa? A synthesis of the relative strong points of each of the models is listed below.

Arguments in favor of the Canon EOS 7D:

• More detail: Offers more megapixels (17.9 vs 15.9MP) with a 8% higher linear resolution.
• 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.
• Better video: Provides higher movie framerates (1080/30p versus 1080/24p).
• Better sound: Can connect to an external microphone for higher quality sound recording.
• Easier framing: Has an optical viewfinder for image composition and settings control.
• Easier setting verification: Features an LCD display on top to control shooting parameters.
• More detailed LCD: Has a higher resolution rear screen (920k vs 461k dots).
• Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/1600s) to freeze action.
• Faster burst: Shoots at higher frequency (8 vs 3.8 flaps/sec) to capture the decisive moment.
• More flexible: Can take a variety of interchangeable lenses, including specialty optics.
• Longer lasting: Can take more shots (800 versus 250) on a single battery charge.
• 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 heavily discounted: Has been available for much longer (launched in September 2009).

Advantages of the Canon PowerShot SX510 HS:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Ready to shoot: Comes with an integrated lens, while the 7D requires a separate lens.
• More compact: Is smaller (104x70mm vs 148x111mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight even though it has a lens built in (unlike the 7D).
• Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
• Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More modern: Reflects 3 years and 11 months of technical progress since the 7D launch.

If the count of relative strengths (bullet points above) is taken as a measure, the 7D is the clear winner of the match-up (19 : 8 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 7D and the Canon SX510 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Superzoom Camera listings 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 7D or the SX510 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 7D	5/5	+ +	..	84/100	4.5/5	4.5/5	Sep 2009	1,699	ebay.com
2.		Canon SX510	..	+ +	..	..	4.5/5	4/5	Aug 2013	249	ebay.com
3.		Canon 80D	4/5	+ +	4.5/5	84/100	4.5/5	4.5/5	Feb 2016	1,199	ebay.com
4.		Canon G3 X	3.5/5	+	..	..	4.5/5	4/5	Jun 2015	999	ebay.com
5.		Canon SX520	..	+	..	..	3.5/5	3.5/5	Jul 2014	399	ebay.com
6.		Canon SX400	..	+	..	..	..	..	Jul 2014	249	ebay.com
7.		Canon 7D II	4.5/5	+	3.5/5	84/100	4/5	4.5/5	Sep 2014	1,799	ebay.com
8.		Canon 70D	5/5	+ +	..	83/100	4.5/5	5/5	Jul 2013	1,199	ebay.com
9.		Canon SX500	..	+ +	..	..	4/5	4/5	Aug 2012	329	ebay.com
10.		Canon M	3/5	+	..	..	4/5	4/5	Jul 2012	599	ebay.com
11.		Canon 60D	5/5	+	..	79/100	4/5	4.5/5	Aug 2010	1,399	ebay.com
12.		Canon 1D Mark IV	5/5	..	..	89/100	..	..	Oct 2009	4,999	ebay.com
13.		Canon 5D Mark II	4/5	91/100	..	79/100	4/5	..	Sep 2008	3,499	ebay.com
14.		Canon 50D	..	+ +	..	+ +	4.5/5	4.5/5	Aug 2008	1,299	ebay.com
15.		Leica X2	3/5	..	..	..	3/5	4/5	May 2012	1,995	ebay.com
16.		Nikon D7000	4/5	..	..	80/100	4.5/5	4.5/5	Sep 2010	1,499	ebay.com
17.		Sony RX10 III	5/5	+	..	84/100	4.5/5	4.5/5	Mar 2016	1,499	ebay.com
Notes: (+ +) 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. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparisons of ratings among very different cameras or across long time periods 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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