Canon SX420 vs Sony RX1

The Canon PowerShot SX420 IS and the Sony Cyber-shot DSC-RX1 are two digital cameras that were revealed to the public, respectively, in January 2016 and September 2012. Both the SX420 and the RX1 are fixed lens compact cameras that are based on a 1/2.3-inch (SX420) and a full frame (RX1) sensor. The Canon has a resolution of 19.9 megapixels, whereas the Sony provides 24 MP.

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

Headline Specifications

Canon SX420		Sony RX1
Fixed lens compact camera		Fixed lens compact camera
24-1008mm f/3.5-6.6		35mm f/2.0
19.9 MP – 1/2.3" sensor		24 MP – Full Frame sensor
720/25p Video		1080/60p Video
ISO 100-1,600		ISO 100-25,600 (50 - 102,400)
No viewfinder, LCD framing		Viewfinder optional
3.0" LCD – 230k dots		3.0" LCD – 1229k dots
Fixed screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
0.5 shutter flaps per second		5 shutter flaps per second
195 shots per battery charge		270 shots per battery charge
104 x 69 x 85 mm, 325 g		113 x 65 x 70 mm, 482 g

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Check RX1 offers at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot SX420 IS and the Sony Cyber-shot DSC-RX1? 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 SX420 and the Sony RX1. 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.

The SX420 can be obtained in two different colors (black, red), while the RX1 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 Sony RX1 is somewhat larger (2 percent) than the Canon SX420. Moreover, the RX1 is substantially heavier (48 percent) than the SX420. In this context, it is worth noting that neither the SX420 nor the RX1 are weather-sealed.

Concerning battery life, the SX420 gets 195 shots out of its Canon NB-11LH battery, while the RX1 can take 270 images on a single charge of its Sony NP-BX1 power pack. The power pack in the RX1 can be charged via the USB port, which can be very convenient when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras 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 SX420	104 mm	69 mm	85 mm	325 g	195	n	Jan 2016	US$ 299	ebay.com
2.		Sony RX1	113 mm	65 mm	70 mm	482 g	270	n	Sep 2012	US$ 2 799	ebay.com
3.		Canon G5 X	112 mm	76 mm	44 mm	353 g	210	n	Oct 2015	US$ 799	ebay.com
4.		Canon G7 X Mark II	106 mm	61 mm	42 mm	319 g	265	n	Feb 2016	US$ 699	ebay.com
5.		Canon SX410	104 mm	69 mm	85 mm	325 g	185	n	Feb 2015	US$ 279	ebay.com
6.		Canon SX430	104 mm	69 mm	85 mm	323 g	195	n	Jan 2017	US$ 299	ebay.com
7.		Canon SX610	105 mm	61 mm	27 mm	191 g	270	n	Jan 2015	US$ 249	ebay.com
8.		Canon SX620	97 mm	57 mm	28 mm	182 g	295	n	May 2016	US$ 279	ebay.com
9.		Canon SX710	113 mm	66 mm	35 mm	269 g	230	n	Jan 2015	US$ 349	ebay.com
10.		Canon SX720	110 mm	64 mm	36 mm	270 g	250	n	Feb 2016	US$ 379	ebay.com
11.		Canon SX730	110 mm	64 mm	40 mm	300 g	250	n	Apr 2017	US$ 399	ebay.com
12.		Nikon D5300	125 mm	98 mm	76 mm	480 g	600	n	Oct 2013	US$ 799	ebay.com
13.		Panasonic ZS70	112 mm	67 mm	41 mm	322 g	380	n	Apr 2017	US$ 449	ebay.com
14.		Sony A3000	128 mm	91 mm	85 mm	411 g	470	n	Aug 2013	US$ 329	ebay.com
15.		Sony NEX-7	120 mm	67 mm	43 mm	400 g	430	n	Aug 2011	US$ 1 349	ebay.com
16.		Sony RX1R	113 mm	65 mm	70 mm	482 g	270	n	Jun 2013	US$ 2 799	ebay.com
17.		Sony RX1R II	113 mm	65 mm	72 mm	507 g	220	n	Oct 2015	US$ 3 299	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 SX420 was launched at a markedly lower price (by 89 percent) than the RX1, which puts it into a different market segment. 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 sensor inside a digital camera is one of the key determinants 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 more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon SX420 features a 1/2.3-inch sensor and the Sony RX1 a full frame sensor. The sensor area in the RX1 is 2943 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 SX420 has a native 4:3 aspect ratio, while the one in the RX1 offers a 3:2 aspect.

With 24MP, the RX1 offers a higher resolution than the SX420 (19.9MP), but the RX1 nevertheless has larger individual pixels (pixel pitch of 5.96μm versus 1.19μm for the SX420) due to its larger sensor. However, the SX420 is a much more recent model (by 3 years and 3 months) than the RX1, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the SX420 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony RX1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the RX1 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Canon SX420 are 25.8 x 19.3 inches or 65.4 x 49.1 cm for good quality, 20.6 x 15.5 inches or 52.3 x 39.3 cm for very good quality, and 17.2 x 12.9 inches or 43.6 x 32.7 cm for excellent quality prints.

The Canon PowerShot SX420 IS has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Sony Cyber-shot DSC-RX1 are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-102400.

In terms of underlying technology, the SX420 is build around a CCD sensor, while the RX1 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.

For many cameras, data on sensor performance has been reported by DXO Mark. 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 SX420	1/2.3	19.9	5152	3864	720/25p	20.3	11.7	806	48
2.		Sony RX1	Full Frame	24.0	6000	4000	1080/60p	25.1	14.3	2534	93
3.		Canon G5 X	1-inch	20.0	5472	3648	1080/60p	21.4	12.3	471	62
4.		Canon G7 X Mark II	1-inch	20.0	5472	3648	1080/60p	21.8	11.9	260	62
5.		Canon SX410	1/2.3	19.9	5152	3864	720/30p	20.2	11.6	720	47
6.		Canon SX430	1/2.3	19.9	5152	3864	720/25p	20.5	11.9	900	49
7.		Canon SX610	1/2.3	20.2	5184	3888	1080/30p	20.2	11.6	712	47
8.		Canon SX620	1/2.3	20.2	5184	3888	1080/30p	20.4	11.8	838	49
9.		Canon SX710	1/2.3	20.2	5184	3888	1080/60p	20.2	11.6	712	47
10.		Canon SX720	1/2.3	20.2	5184	3888	1080/60p	20.3	11.8	817	48
11.		Canon SX730	1/2.3	20.2	5184	3888	1080/60p	20.5	11.9	924	50
12.		Nikon D5300	APS-C	24.0	6000	4000	1080/60p	24.0	13.9	1338	83
13.		Panasonic ZS70	1/2.3	20.2	5184	3888	4K/30p	19.1	10.6	106	36
14.		Sony A3000	APS-C	19.8	5456	3632	1080/60i	23.7	12.8	1068	78
15.		Sony NEX-7	APS-C	24.0	6000	4000	1080/60i	24.1	13.4	1016	81
16.		Sony RX1R	Full Frame	24.0	6000	4000	1080/60p	25.0	13.6	2537	91
17.		Sony RX1R II	Full Frame	42.2	7952	5304	1080/60p	25.8	13.9	3204	97
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 can also record movies. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the RX1 provides a better video resolution than the SX420. It can shoot movie footage at 1080/60p, while the Canon is limited to 720/25p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The SX420 and the RX1 are similar in the sense that neither of the two has a viewfinder. The images are, thus, framed using live view on the rear LCD. That said, the RX1 can be equipped with an optional viewfinder – the FDA-EV1MK. The table below summarizes some of the other core capabilities of the Canon SX420 and Sony RX1 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 SX420	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
2.		Sony RX1	optional	n	3.0 / 1229	fixed	n	1/4000s	5.0/s	Y	n
3.		Canon G5 X	2360	n	3.0 / 1040	swivel	Y	1/2000s	5.9/s	Y	Y
4.		Canon G7 X Mark II	none	n	3.0 / 1040	tilting	Y	1/2000s	8.0/s	Y	Y
5.		Canon SX410	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
6.		Canon SX430	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
7.		Canon SX610	none	n	3.0 / 922	fixed	n	1/2000s	2.5/s	Y	Y
8.		Canon SX620	none	n	3.0 / 922	fixed	n	1/2000s	2.5/s	Y	Y
9.		Canon SX710	none	n	3.0 / 922	fixed	n	1/3200s	6.0/s	Y	Y
10.		Canon SX720	none	n	3.0 / 922	fixed	n	1/3200s	5.9/s	Y	Y
11.		Canon SX730	none	n	3.0 / 922	tilting	n	1/3200s	5.9/s	Y	Y
12.		Nikon D5300	optical	n	3.2 / 1037	swivel	n	1/4000s	5.0/s	Y	n
13.		Panasonic ZS70	1166	n	3.0 / 1040	tilting	Y	1/2000s	10.0/s	Y	Y
14.		Sony A3000	202	n	3.0 / 230	fixed	n	1/4000s	2.5/s	Y	n
15.		Sony NEX-7	2359	n	3.0 / 921	tilting	n	1/4000s	10.0/s	Y	n
16.		Sony RX1R	optional	n	3.0 / 1229	fixed	n	1/4000s	5.0/s	Y	n
17.		Sony RX1R II	2360	n	3.0 / 1229	tilting	n	1/4000s	5.0/s	n	n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

The SX420 is equipped with a zoom lens, while the RX1 comes with a built-in prime. The SX420 has a 24-1008mm f/3.5-6.6 optic and the RX1 offers a 35mm f/2.0 (focal lengths in full frame equivalent terms). Hence, the Canon provides a wider angle of view at the short end, as well as more tele-photo reach at the long end than the Sony. The RX1 offers the faster maximum aperture.

The SX420 writes its imaging data to SDXC cards, while the RX1 uses SDXC or Memory Stick PRO Duo 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 SX420 IS and Sony Cyber-shot DSC-RX1 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 SX420	-	mono / mono	-	-	-	2.0	Y	Y	-
2.		Sony RX1	Y	stereo / mono	Y	-	mini	2.0	-	-	-
3.		Canon G5 X	Y	stereo / mono	-	-	mini	2.0	Y	Y	-
4.		Canon G7 X Mark II	-	stereo / mono	-	-	micro	2.0	Y	Y	-
5.		Canon SX410	-	stereo / mono	-	-	-	2.0	-	-	-
6.		Canon SX430	-	mono / mono	-	-	-	2.0	Y	Y	-
7.		Canon SX610	-	- / -	-	-	micro	2.0	Y	Y	-
8.		Canon SX620	-	mono / mono	-	-	micro	2.0	Y	Y	-
9.		Canon SX710	-	stereo / mono	-	-	micro	2.0	Y	Y	-
10.		Canon SX720	-	stereo / mono	-	-	micro	2.0	Y	Y	-
11.		Canon SX730	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
12.		Nikon D5300	Y	stereo / mono	Y	-	mini	2.0	Y	-	-
13.		Panasonic ZS70	-	stereo / mono	-	-	micro	2.0	Y	-	-
14.		Sony A3000	Y	stereo / mono	-	-	mini	2.0	-	-	-
15.		Sony NEX-7	Y	stereo / mono	Y	-	mini	2.0	-	-	-
16.		Sony RX1R	Y	stereo / mono	Y	-	mini	2.0	-	-	-
17.		Sony RX1R II	Y	stereo / mono	Y	-	micro	2.0	Y	Y	-

It is notable that the SX420 offers wifi support, while the RX1 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Both the SX420 and the RX1 have been discontinued, but can regularly be found used on ebay. The RX1 was replaced by the Sony RX1R, while the SX420 was followed by the Canon SX430. Further information on the features and operation of the SX420 and RX1 can be found, respectively, in the Canon SX420 Manual (free pdf) or the online Sony RX1 Manual.

Review summary

So what conclusions can be drawn? Which of the two cameras – the Canon SX420 or the Sony RX1 – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.

Advantages of the Canon PowerShot SX420 IS:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Wider view: Has a wider-angle lens that facilitates landscape or interior shots.
• Less heavy: Is lighter (by 157g or 33 percent) and hence easier to carry around.
• Sharper images: Has hand-shake reducing image stabilization built-in.
• 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 into a lower priced category (89 percent cheaper at launch).
• More modern: Reflects 3 years and 3 months of technical progress since the RX1 launch.

Reasons to prefer the Sony Cyber-shot DSC-RX1:

• More detail: Has more megapixels (24 vs 19.9MP), which boosts linear resolution by 12%.
• 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 definition movie capture (1080/60p vs 720/25p).
• Better sound: Can connect to an external microphone for higher quality sound recording.
• More framing options: Can be equipped with a hotshoe-mounted accessory-viewfinder.
• More detailed LCD: Has a higher resolution rear screen (1229k vs 230k dots).
• Faster burst: Shoots at higher frequency (5 vs 0.5 flaps/sec) to capture the decisive moment.
• Better light gathering: Has a lens with a wider maximum aperture (f/2.0 vs f/3.5).
• Longer lasting: Gets more shots (270 versus 195) out of a single battery charge.
• Easier travel charging: Can be conveniently charged via its USB port.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• More heavily discounted: Has been around for much longer (launched in September 2012).

If the count of relative strengths (bullet points above) is taken as a measure, the RX1 is the clear winner of the contest (16 : 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 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.

How about other alternatives? Do the specifications of the Canon SX420 and the Sony RX1 place the cameras among the top in their class? Find out in the latest Best Superzoom Camera and Best Prime Lens Compact Camera listings whether the two cameras rank among the cream of the crop.

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 SX420 or the RX1 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 where reviews by experts come in. 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	Street Price
1.		Canon SX420	..	..	..	..	..	3/5	Jan 2016	US$ 299	ebay.com
2.		Sony RX1	5/5	..	..	79/100	4/5	4.5/5	Sep 2012	US$ 2 799	ebay.com
3.		Canon G5 X	5/5	+ +	..	78/100	4.5/5	4.5/5	Oct 2015	US$ 799	ebay.com
4.		Canon G7 X Mark II	4.5/5	+ +	..	81/100	4.5/5	4.5/5	Feb 2016	US$ 699	ebay.com
5.		Canon SX410	..	o	..	..	..	..	Feb 2015	US$ 279	ebay.com
6.		Canon SX430	..	..	..	..	3.5/5	3.5/5	Jan 2017	US$ 299	ebay.com
7.		Canon SX610	..	..	..	..	4/5	4/5	Jan 2015	US$ 249	ebay.com
8.		Canon SX620	..	..	..	..	..	4/5	May 2016	US$ 279	ebay.com
9.		Canon SX710	..	+	..	..	4/5	3.5/5	Jan 2015	US$ 349	ebay.com
10.		Canon SX720	..	+	..	..	4/5	4.5/5	Feb 2016	US$ 379	ebay.com
11.		Canon SX730	..	+	..	..	4/5	4/5	Apr 2017	US$ 399	ebay.com
12.		Nikon D5300	4/5	+ +	..	79/100	4.5/5	4.5/5	Oct 2013	US$ 799	ebay.com
13.		Panasonic ZS70	..	+ +	..	..	4/5	4/5	Apr 2017	US$ 449	ebay.com
14.		Sony A3000	3/5	+	..	..	4/5	4/5	Aug 2013	US$ 329	ebay.com
15.		Sony NEX-7	5/5	+ +	..	81/100	4.5/5	5/5	Aug 2011	US$ 1 349	ebay.com
16.		Sony RX1R	5/5	..	..	..	4/5	4.5/5	Jun 2013	US$ 2 799	ebay.com
17.		Sony RX1R II	5/5	..	..	82/100	..	4.5/5	Oct 2015	US$ 3 299	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. 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. 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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