Canon SX520 vs Epson R-D1

The Canon PowerShot SX520 HS and the Epson R-D1 are two digital cameras that were revealed to the public, respectively, in July 2014 and March 2004. The SX520 is a fixed lens compact, while the R-D1 is a rangefinder-focusing mirrorless. The cameras are based on a 1/2.3-inch (SX520) and an APS-C (R-D1) sensor. The Canon has a resolution of 15.9 megapixels, whereas the Epson provides 6 MP.

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

Headline Specifications

Canon SX520		Epson R-D1
Fixed lens compact camera		Rangefinder camera
24-1008mm f/3.4-6		Leica M mount lenses
15.9 MP – 1/2.3" sensor		6 MP – APS-C sensor
1080/30p Video		no Video
ISO 100-3,200		ISO 200-1,600
No viewfinder, LCD framing		Optical viewfinder
3.0" LCD – 461k dots		2.0" LCD – 235k dots
Fixed screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
1.6 shutter flaps per second		1 shutter flaps per second
120 x 82 x 92 mm, 441 g		142 x 89 x 40 mm, 620 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot SX520 HS and the Epson R-D1? 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 SX520 and the Epson R-D1. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side 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 Epson R-D1 is notably larger (28 percent) than the Canon SX520. In this context, it is worth noting that neither the SX520 nor the R-D1 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the SX520 has a lens built in, whereas the R-D1 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 R-D1 and their specifications in the Leica M Lens Catalog.

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 SX520	120 mm	82 mm	92 mm	441 g	210	n	Jul 2014	399	ebay.com
2.		Epson R-D1	142 mm	89 mm	40 mm	620 g	..	n	Mar 2004	2,999	ebay.com
3.		Canon SX540	120 mm	82 mm	92 mm	442 g	205	n	Jan 2016	399	ebay.com
4.		Canon SX530	120 mm	82 mm	92 mm	442 g	210	n	Jan 2015	429	ebay.com
5.		Canon SX710	113 mm	66 mm	35 mm	269 g	230	n	Jan 2015	349	ebay.com
6.		Canon SX700	113 mm	66 mm	35 mm	269 g	250	n	Feb 2014	349	ebay.com
7.		Canon SX60	128 mm	93 mm	114 mm	650 g	340	n	Sep 2014	549	ebay.com
8.		Canon T5	130 mm	100 mm	78 mm	480 g	500	n	Feb 2014	449	ebay.com
9.		Canon SX510	104 mm	70 mm	80 mm	349 g	250	n	Aug 2013	249	ebay.com
10.		Canon Rebel	142 mm	99 mm	72 mm	649 g	400	n	Aug 2003	899	ebay.com
11.		Leica X Vario	133 mm	73 mm	95 mm	680 g	450	n	Jun 2013	2,850	ebay.com
12.		Nikon B600	122 mm	82 mm	99 mm	500 g	280	n	Jan 2019	349	ebay.com
13.		Nikon D50	133 mm	102 mm	76 mm	620 g	400	n	Apr 2005	749	ebay.com
14.		Nikon D70s	140 mm	111 mm	78 mm	679 g	500	n	Apr 2005	899	ebay.com
15.		Nikon D70	140 mm	111 mm	78 mm	679 g	400	n	Jan 2004	999	ebay.com
16.		Sony HX90V	102 mm	58 mm	36 mm	245 g	360	n	Apr 2015	429	ebay.com
17.		Sony H200	123 mm	83 mm	87 mm	530 g	240	n	Jan 2013	249	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 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 SX520 was launched at a lower price than the R-D1, despite having a lens built in. 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 imaging sensor is a crucial determinant 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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon SX520 features a 1/2.3-inch sensor and the Epson R-D1 an APS-C sensor. The sensor area in the R-D1 is 1221 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 1.5. The sensor in the SX520 has a native 4:3 aspect ratio, while the one in the R-D1 offers a 3:2 aspect.

Despite having a smaller sensor, the Canon SX520 offers a higher resolution of 15.9 megapixels, compared with 6 MP of the Epson R-D1. 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 1.33μm versus 7.85μm for the R-D1). However, it should be noted that the SX520 is much more recent (by 10 years and 4 months) than the R-D1, 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 SX520 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Canon SX520 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the SX520 for good quality output (200 dots per inch) amounts to 23 x 17.3 inches or 58.5 x 43.9 cm, for very good quality (250 dpi) 18.4 x 13.8 inches or 46.8 x 35.1 cm, and for excellent quality (300 dpi) 15.4 x 11.5 inches or 39 x 29.3 cm. The corresponding values for the Epson R-D1 are 15 x 10 inches or 38.2 x 25.4 cm for good quality, 12 x 8 inches or 30.6 x 20.3 cm for very good quality, and 10 x 6.7 inches or 25.5 x 16.9 cm for excellent quality prints.

The Canon PowerShot SX520 HS has a native sensitivity range from ISO 100 to ISO 3200. The corresponding ISO settings for the Epson R-D1 are ISO 200 to ISO 1600 (no boost).

In terms of underlying technology, the SX520 is build around a BSI-CMOS sensor, while the R-D1 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.

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 SX520	1/2.3	15.9	4608	3456	1080/30p	20.1	11.5	672	46
2.		Epson R-D1	APS-C	6.0	3008	2000	none	21.1	10.4	564	55
3.		Canon SX540	1/2.3	20.2	5184	3888	1080/60p	20.3	11.7	806	48
4.		Canon SX530	1/2.3	15.9	4608	3456	1080/30p	20.2	11.6	712	47
5.		Canon SX710	1/2.3	20.2	5184	3888	1080/60p	20.2	11.6	712	47
6.		Canon SX700	1/2.3	15.9	4608	3456	1080/60p	20.1	11.4	629	45
7.		Canon SX60	1/2.3	14.2	4608	3072	1080/60p	19.2	10.8	127	39
8.		Canon T5	APS-C	17.9	5184	3456	1080/30p	21.9	11.3	724	63
9.		Canon SX510	1/2.3	15.9	4608	3456	1080/24p	20.0	11.3	586	45
10.		Canon Rebel	APS-C	6.3	3072	2048	none	21.0	10.8	544	55
11.		Leica X Vario	APS-C	16.1	4928	3272	1080/30p	23.4	12.7	1320	78
12.		Nikon B600	1/2.3	15.9	4608	3456	1080/30p	20.7	12.2	1095	52
13.		Nikon D50	APS-C	6.0	3008	2000	none	20.9	10.8	560	55
14.		Nikon D70s	APS-C	6.0	3008	2000	none	20.4	10.3	529	50
15.		Nikon D70	APS-C	6.0	3008	2000	none	20.4	10.3	529	50
16.		Sony HX90V	1/2.3	18.0	4896	3672	1080/60p	20.2	11.6	738	47
17.		Sony H200	1/2.3	15.2	5184	2930	720/30p	19.9	11.2	529	44
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. The SX520 indeed provides movie recording capabilities, while the R-D1 does not. The highest resolution format that the SX520 can use is 1080/30p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the R-D1 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the SX520 relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the Canon SX520 and Epson R-D1 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 SX520	none	n	3.0 / 461	fixed	n	1/2000s	1.6/s	Y	Y
2.		Epson R-D1	optical	n	2.0 / 235	fixed	n	1/2000s	1.0/s	n	n
3.		Canon SX540	none	n	3.0 / 461	fixed	n	1/2000s	5.9/s	Y	Y
4.		Canon SX530	none	n	3.0 / 461	fixed	n	1/2000s	1.6/s	Y	Y
5.		Canon SX710	none	n	3.0 / 922	fixed	n	1/3200s	6.0/s	Y	Y
6.		Canon SX700	none	n	3.0 / 922	fixed	n	1/3200s	8.5/s	Y	Y
7.		Canon SX60	922	n	3.0 / 922	swivel	n	1/2000s	6.4/s	Y	Y
8.		Canon T5	optical	n	3.0 / 460	fixed	n	1/4000s	3.0/s	Y	n
9.		Canon SX510	none	n	3.0 / 461	fixed	n	1/1600s	3.8/s	Y	Y
10.		Canon Rebel	optical	n	1.8 / 118	fixed	n	1/4000s	2.5/s	Y	n
11.		Leica X Vario	optional	n	3.0 / 920	fixed	n	1/2000s	5.0/s	Y	n
12.		Nikon B600	none	n	3.0 / 921	fixed	n	1/4000s	7.4/s	Y	Y
13.		Nikon D50	optical	n	2.0 / 130	fixed	n	1/4000s	2.5/s	Y	n
14.		Nikon D70s	optical	n	2.0 / 130	fixed	n	1/8000s	3.0/s	Y	n
15.		Nikon D70	optical	n	1.8 / 130	fixed	n	1/8000s	3.0/s	Y	n
16.		Sony HX90V	638	n	3.0 / 921	tilting	n	1/2000s	10.0/s	Y	Y
17.		Sony H200	none	n	3.0 / 460	fixed	n	1/1500s	0.8/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 SX520 has one, while the R-D1 does not. While the built-in flash of the SX520 is not very powerful, it can at times be useful as a fill-in light.

The SX520 writes its imaging data to SDXC cards, while the R-D1 uses SDHC 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 SX520 HS and Epson R-D1 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 SX520	-	stereo / mono	-	-	mini	2.0	-	-	-
2.		Epson R-D1	Y	- / -	-	-	-	-	-	-	-
3.		Canon SX540	-	stereo / mono	-	-	mini	2.0	Y	Y	-
4.		Canon SX530	-	stereo / mono	-	-	mini	2.0	Y	Y	-
5.		Canon SX710	-	stereo / mono	-	-	micro	2.0	Y	Y	-
6.		Canon SX700	-	stereo / mono	-	-	micro	2.0	Y	Y	-
7.		Canon SX60	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
8.		Canon T5	Y	mono / mono	-	-	mini	2.0	-	-	-
9.		Canon SX510	-	stereo / mono	-	-	mini	2.0	Y	-	-
10.		Canon Rebel	Y	- / -	-	-	-	1.1	-	-	-
11.		Leica X Vario	Y	stereo / mono	-	-	mini	2.0	-	-	-
12.		Nikon B600	-	stereo / mono	-	-	micro	2.0	Y	-	Y
13.		Nikon D50	Y	- / -	-	-	-	2.0	-	-	-
14.		Nikon D70s	Y	- / -	-	-	-	2.0	-	-	-
15.		Nikon D70	Y	- / -	-	-	-	1.0	-	-	-
16.		Sony HX90V	-	stereo / mono	-	-	micro	2.0	Y	Y	-
17.		Sony H200	-	mono / mono	-	-	-	2.0	-	-	-

It is notable that the R-D1 has a hotshoe, which makes it possible to easily attach optional accessories, such as an external flash gun. The SX520 does not feature such an accessory-socket.

Studio photographers will appreciate that the Epson R-D1 (unlike the SX520) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the SX520 and the R-D1 have been discontinued, but can regularly be found used on ebay. The SX520 was replaced by the Canon SX530, while the R-D1 does not have a direct successor. Further information on the features and operation of the SX520 and R-D1 can be found, respectively, in the Canon SX520 Manual (free pdf) or the online Epson R-D1 Manual.

Review summary

So what conclusions can be drawn? Is there a clear favorite between the Canon SX520 and the Epson R-D1? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

Advantages of the Canon PowerShot SX520 HS:

• More detail: Offers more megapixels (15.9 vs 6MP) with a 59% 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 1080/30p 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 (461k vs 235k dots).
• Faster burst: Shoots at higher frequency (1.6 vs 1 flaps/sec) to capture the decisive moment.
• Ready to shoot: Has a lens built-in, whereas the R-D1 requires a separate lens.
• More compact: Is smaller (120x82mm vs 142x89mm) and thus needs less room in the bag.
• Less heavy: Is lighter even though it comes with a built-in lens (unlike the R-D1).
• 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.
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More modern: Reflects 10 years and 4 months of technical progress since the R-D1 launch.

Arguments in favor of the Epson R-D1:

• 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.
• More flexible: Takes interchangeable lenses and can thus be used with different optics.
• 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 March 2004).

If the count of individual advantages (bullet points above) is taken as a guide, the SX520 emerges as the winner of the contest (13 : 10 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.

In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the SX520 or the R-D1 perform in practice. 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 (USD)	Street Price
1.		Canon SX520	..	+	..	..	3.5/5	3.5/5	Jul 2014	399	ebay.com
2.		Epson R-D1	..	..	..	..	..	..	Mar 2004	2,999	ebay.com
3.		Canon SX540	..	..	..	..	..	..	Jan 2016	399	ebay.com
4.		Canon SX530	..	+ +	..	..	4/5	4/5	Jan 2015	429	ebay.com
5.		Canon SX710	..	+	..	..	4/5	3.5/5	Jan 2015	349	ebay.com
6.		Canon SX700	..	+ +	..	..	4/5	4/5	Feb 2014	349	ebay.com
7.		Canon SX60	3/5	+ +	..	75/100	4/5	4.5/5	Sep 2014	549	ebay.com
8.		Canon T5	3/5	+	..	..	4/5	4.5/5	Feb 2014	449	ebay.com
9.		Canon SX510	..	+ +	..	..	4.5/5	4/5	Aug 2013	249	ebay.com
10.		Canon Rebel	..	..	..	+ +	..	..	Aug 2003	899	ebay.com
11.		Leica X Vario	3/5	..	..	..	4/5	4/5	Jun 2013	2,850	ebay.com
12.		Nikon B600	..	+	..	..	3.5/5	3/5	Jan 2019	349	ebay.com
13.		Nikon D50	..	78/100	..	+ +	4/5	4.5/5	Apr 2005	749	ebay.com
14.		Nikon D70s	..	..	..	..	..	5/5	Apr 2005	899	ebay.com
15.		Nikon D70	..	..	..	+ +	..	..	Jan 2004	999	ebay.com
16.		Sony HX90V	4/5	+ +	..	..	4/5	4.5/5	Apr 2015	429	ebay.com
17.		Sony H200	..	..	..	..	3.5/5	3.5/5	Jan 2013	249	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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