Canon G1 X vs Epson R-D1

The Canon PowerShot G1 X and the Epson R-D1 are two enthusiast cameras that were revealed to the public, respectively, in January 2012 and March 2004. The G1X is a fixed lens compact, while the R-D1 is a rangefinder-focusing mirrorless. The cameras are based on an 1.5-inch (G1X) and an APS-C (R-D1) sensor. The Canon has a resolution of 14.2 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 G1 X		Epson R-D1
Fixed lens compact camera		Rangefinder camera
28-112mm f/2.8-5.8		Leica M mount lenses
14.2 MP – 1.5" sensor		6 MP – APS-C sensor
1080/24p Video		no Video
ISO 100-12,800		ISO 200-1,600
Optical viewfinder		Optical viewfinder
3.0" LCD – 922k dots		2.0" LCD – 235k dots
Swivel screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
1.9 shutter flaps per second		1 shutter flaps per second
117 x 81 x 65 mm, 534 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 G1 X 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

An illustration of the physical size and weight of the Canon G1 X and the Epson R-D1 is provided 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 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 (33 percent) than the Canon G1 X. In this context, it is worth noting that neither the G1X nor the R-D1 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G1X 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. 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 G1 X	117 mm	81 mm	65 mm	534 g	250	n	Jan 2012	799	ebay.com
2.		Epson R-D1	142 mm	89 mm	40 mm	620 g	..	n	Mar 2004	2,999	ebay.com
3.		Canon G1 X Mark II	116 mm	74 mm	66 mm	553 g	240	n	Feb 2014	799	ebay.com
4.		Canon G16	109 mm	76 mm	40 mm	356 g	360	n	Aug 2013	549	ebay.com
5.		Canon S120	100 mm	59 mm	29 mm	217 g	230	n	Aug 2013	449	ebay.com
6.		Canon SX50	123 mm	87 mm	106 mm	595 g	315	n	Sep 2012	429	ebay.com
7.		Canon Rebel	142 mm	99 mm	72 mm	649 g	400	n	Aug 2003	899	ebay.com
8.		Canon T1i	129 mm	98 mm	62 mm	520 g	400	n	Mar 2009	799	ebay.com
9.		Canon T3	130 mm	100 mm	78 mm	495 g	700	n	Feb 2011	449	ebay.com
10.		Canon T4i	133 mm	100 mm	79 mm	575 g	440	n	Jun 2012	849	ebay.com
11.		Canon XSi	129 mm	98 mm	62 mm	524 g	500	n	Jan 2008	799	ebay.com
12.		Leica V-LUX 3	124 mm	81 mm	95 mm	540 g	410	n	Dec 2011	949	ebay.com
13.		Leica V-LUX 4	125 mm	87 mm	110 mm	588 g	540	n	Sep 2012	949	ebay.com
14.		Leica X Vario	133 mm	73 mm	95 mm	680 g	450	n	Jun 2013	2,850	ebay.com
15.		Nikon D50	133 mm	102 mm	76 mm	620 g	400	n	Apr 2005	749	ebay.com
16.		Nikon D70	140 mm	111 mm	78 mm	679 g	400	n	Jan 2004	999	ebay.com
17.		Nikon D70s	140 mm	111 mm	78 mm	679 g	500	n	Apr 2005	899	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

The price is, of course, an important factor in any camera decision. 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 G1X was launched at a lower price than the R-D1, 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 imaging sensor is a crucial determinant 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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon G1 X features an 1.5-inch sensor and the Epson R-D1 an APS-C sensor. The sensor area in the R-D1 is 41 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.85 and 1.5. The sensor in the G1X 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 G1 X offers a higher resolution of 14.2 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 4.30μm versus 7.85μm for the R-D1). However, it should be noted that the G1X is much more recent (by 7 years and 10 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.

The resolution advantage of the Canon G1 X implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G1X for good quality output (200 dots per inch) amounts to 21.8 x 16.3 inches or 55.3 x 41.5 cm, for very good quality (250 dpi) 17.4 x 13.1 inches or 44.2 x 33.2 cm, and for excellent quality (300 dpi) 14.5 x 10.9 inches or 36.8 x 27.6 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 G1 X has a native sensitivity range from ISO 100 to ISO 12800. The corresponding ISO settings for the Epson R-D1 are ISO 200 to ISO 1600 (no boost).

In terms of underlying technology, the G1X is build around a 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.

For many cameras, data on sensor performance has been reported by DXO Mark. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). 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 G1 X	1.5-inch	14.2	4352	3264	1080/24p	21.7	10.8	644	60
2.		Epson R-D1	APS-C	6.0	3008	2000	none	21.1	10.4	564	55
3.		Canon G1 X Mark II	1.5-inch	13.0	4160	3120	1080/30p	21.5	10.8	581	58
4.		Canon G16	1/1.7	12.0	4000	3000	1080/60p	21.0	11.7	230	54
5.		Canon S120	1/1.7	12.0	4000	3000	1080/60p	21.3	11.9	246	56
6.		Canon SX50	1/2.3	12.0	4000	3000	1080/24p	20.3	11.2	179	47
7.		Canon Rebel	APS-C	6.3	3072	2048	none	21.0	10.8	544	55
8.		Canon T1i	APS-C	15.1	4752	3168	1080/20p	21.7	11.5	663	63
9.		Canon T3	APS-C	12.2	4272	2848	720/30p	21.9	11.0	755	62
10.		Canon T4i	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	722	62
11.		Canon XSi	APS-C	12.2	4272	2848	none	21.9	10.8	692	61
12.		Leica V-LUX 3	1/2.3	12.0	4000	3000	1080/60p	19.7	11.0	430	42
13.		Leica V-LUX 4	1/2.3	12.0	4000	3000	1080/60p	19.8	11.1	501	43
14.		Leica X Vario	APS-C	16.1	4928	3272	1080/30p	23.4	12.7	1320	78
15.		Nikon D50	APS-C	6.0	3008	2000	none	20.9	10.8	560	55
16.		Nikon D70	APS-C	6.0	3008	2000	none	20.4	10.3	529	50
17.		Nikon D70s	APS-C	6.0	3008	2000	none	20.4	10.3	529	50
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 G1X indeed provides movie recording capabilities, while the R-D1 does not. The highest resolution format that the G1X can use is 1080/24p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The G1X and the R-D1 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 following table reports on some other key feature differences and similarities of the Canon G1 X, the Epson R-D1, and comparable 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 G1 X	optical	n	3.0 / 922	swivel	n	1/4000s	1.9/s	Y	Y
2.		Epson R-D1	optical	n	2.0 / 235	fixed	n	1/2000s	1.0/s	n	n
3.		Canon G1 X Mark II	optional	n	3.0 / 1040	tilting	Y	1/4000s	5.2/s	Y	Y
4.		Canon G16	optical	n	3.0 / 922	fixed	n	1/4000s	2.2/s	Y	Y
5.		Canon S120	none	n	3.0 / 922	fixed	Y	1/2000s	12.1/s	Y	Y
6.		Canon SX50	202	n	3.0 / 461	swivel	n	1/2000s	2.2/s	Y	Y
7.		Canon Rebel	optical	n	1.8 / 118	fixed	n	1/4000s	2.5/s	Y	n
8.		Canon T1i	optical	n	3.0 / 920	fixed	n	1/4000s	3.4/s	Y	n
9.		Canon T3	optical	n	2.7 / 230	fixed	n	1/4000s	3.0/s	Y	n
10.		Canon T4i	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
11.		Canon XSi	optical	n	3.0 / 230	fixed	n	1/4000s	3.5/s	Y	n
12.		Leica V-LUX 3	202	n	3.0 / 460	swivel	n	1/2000s	12.0/s	Y	Y
13.		Leica V-LUX 4	1312	n	3.0 / 460	swivel	n	1/4000s	12.0/s	Y	Y
14.		Leica X Vario	optional	n	3.0 / 920	fixed	n	1/2000s	5.0/s	Y	n
15.		Nikon D50	optical	n	2.0 / 130	fixed	n	1/4000s	2.5/s	Y	n
16.		Nikon D70	optical	n	1.8 / 130	fixed	n	1/8000s	3.0/s	Y	n
17.		Nikon D70s	optical	n	2.0 / 130	fixed	n	1/8000s	3.0/s	Y	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 G1X has one, while the R-D1 does not. While the built-in flash of the G1X is not very powerful, it can at times be useful as a fill-in light.

The G1X 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 G1 X 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 G1 X	Y	stereo / mono	-	-	mini	2.0	-	-	-
2.		Epson R-D1	Y	- / -	-	-	-	-	-	-	-
3.		Canon G1 X Mark II	Y	stereo / mono	-	-	mini	2.0	Y	Y	-
4.		Canon G16	Y	stereo / mono	-	-	mini	2.0	Y	-	-
5.		Canon S120	-	stereo / mono	-	-	mini	2.0	Y	-	-
6.		Canon SX50	Y	stereo / mono	-	-	mini	2.0	-	-	-
7.		Canon Rebel	Y	- / -	-	-	-	1.1	-	-	-
8.		Canon T1i	Y	mono / mono	-	-	mini	2.0	-	-	-
9.		Canon T3	Y	stereo / mono	-	-	mini	2.0	-	-	-
10.		Canon T4i	Y	stereo / mono	Y	-	mini	2.0	-	-	-
11.		Canon XSi	Y	- / -	-	-	mini	2.0	-	-	-
12.		Leica V-LUX 3	Y	stereo / -	-	-	mini	2.0	-	-	-
13.		Leica V-LUX 4	Y	stereo / mono	Y	-	mini	2.0	-	-	-
14.		Leica X Vario	Y	stereo / mono	-	-	mini	2.0	-	-	-
15.		Nikon D50	Y	- / -	-	-	-	2.0	-	-	-
16.		Nikon D70	Y	- / -	-	-	-	1.0	-	-	-
17.		Nikon D70s	Y	- / -	-	-	-	2.0	-	-	-

Studio photographers will appreciate that the Epson R-D1 (unlike the G1X) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the G1X and the R-D1 have been discontinued, but can regularly be found used on ebay. The G1X was replaced by the Canon G1X Mark II, while the R-D1 does not have a direct successor. Further information on the features and operation of the G1X and R-D1 can be found, respectively, in the Canon G1 X Manual (free pdf) or the online Epson R-D1 Manual.

Review summary

So how do things add up? Is the Canon G1 X better than the Epson R-D1 or vice versa? The listing below highlights the relative strengths of the two models.

Reasons to prefer the Canon PowerShot G1 X:

• More detail: Offers more megapixels (14.2 vs 6MP) with a 51% higher linear resolution.
• Broader imaging potential: Can record not only still images but also 1080/24p 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 235k dots).
• More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
• Faster burst: Shoots at higher frequency (1.9 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 (117x81mm 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 7 years and 10 months of technical progress since the R-D1 launch.

Arguments in favor of the Epson R-D1:

• More flexible: Takes interchangeable lenses and can thus be used with different optics.
• 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 relative strengths (bullet points above) is taken as a measure, the G1X is the clear winner of the match-up (15 : 3 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 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 G1X or the R-D1 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 table below provides a synthesis of the camera assessments of some of the best known photo-gear 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 G1 X	5/5	+	..	76/100	4/5	4.5/5	Jan 2012	799	ebay.com
2.		Epson R-D1	..	..	..	..	..	..	Mar 2004	2,999	ebay.com
3.		Canon G1 X Mark II	3/5	+	..	77/100	4/5	4.5/5	Feb 2014	799	ebay.com
4.		Canon G16	4/5	+	..	..	4.5/5	4.5/5	Aug 2013	549	ebay.com
5.		Canon S120	..	+ +	..	..	4.5/5	4.5/5	Aug 2013	449	ebay.com
6.		Canon SX50	3/5	+ +	..	72/100	4.5/5	4.5/5	Sep 2012	429	ebay.com
7.		Canon Rebel	..	..	..	+ +	..	..	Aug 2003	899	ebay.com
8.		Canon T1i	..	+ +	..	74/100	4.5/5	4.5/5	Mar 2009	799	ebay.com
9.		Canon T3	..	80/100	..	69/100	4/5	4.5/5	Feb 2011	449	ebay.com
10.		Canon T4i	4/5	+ +	..	77/100	4.5/5	4.5/5	Jun 2012	849	ebay.com
11.		Canon XSi	..	+ +	..	+ +	4/5	4.5/5	Jan 2008	799	ebay.com
12.		Leica V-LUX 3	..	..	..	..	..	..	Dec 2011	949	ebay.com
13.		Leica V-LUX 4	..	..	..	..	..	..	Sep 2012	949	ebay.com
14.		Leica X Vario	3/5	..	..	..	4/5	4/5	Jun 2013	2,850	ebay.com
15.		Nikon D50	..	78/100	..	+ +	4/5	4.5/5	Apr 2005	749	ebay.com
16.		Nikon D70	..	..	..	+ +	..	..	Jan 2004	999	ebay.com
17.		Nikon D70s	..	..	..	..	..	5/5	Apr 2005	899	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, 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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Other camera comparisons

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