Canon R50 vs Sony A7 III

The Canon EOS R50 and the Sony Alpha A7 III are two digital cameras that were announced, respectively, in February 2023 and February 2018. Both the R50 and the A7 III are mirrorless interchangeable lens cameras that are based on an APS-C (R50) and a full frame (A7 III) sensor. Both cameras offer a resolution of 24 megapixels.

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

Headline Specifications

Canon R50		Sony A7 III
Mirrorless system camera		Mirrorless system camera
		Sony E mount lenses
24 MP – APS-C sensor		24 MP – Full Frame sensor
4K/30p Video		4K/30p Video
ISO 100-32,000 (100 - 51,200)		ISO 100-51,200 (50 - 204,800)
Electronic viewfinder (2360k dots)		Electronic viewfinder (2359k dots)
3.0" LCD – 1620k dots		3.0" LCD – 922k dots
Swivel touchscreen		Tilting touchscreen
12 shutter flaps per second		10 shutter flaps per second
Lens stabilization only		In-body stabilization
not weather sealed		Weathersealed body
230 shots per battery charge		610 shots per battery charge
116 x 86 x 69 mm, 375 g		127 x 96 x 74 mm, 650 g

Check R50 price at
amazon.com
Check A7 III price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS R50 and the Sony Alpha A7 III? 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 R50 and the Sony A7 III are illustrated in the side-by-side display below. 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 width, height and depth dimensions are rounded to the nearest millimeter.

The R50 can be obtained in two different colors (black, white), while the A7 III 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 A7 III is notably larger (22 percent) than the Canon R50. Moreover, the A7 III is substantially heavier (73 percent) than the R50. It is noteworthy in this context that the A7 III is splash and dust-proof, while the R50 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the R50 gets 230 shots out of its Canon LP-E17 battery, while the A7 III can take 610 images on a single charge of its Sony NP-FZ100 power pack. The battery packs of both cameras can be charged via USB, 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. 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	Street Price
1.		Canon R50	116 mm	86 mm	69 mm	375 g	230	n	Feb 2023	EUR 829	amazon.com
2.		Sony A7 III	127 mm	96 mm	74 mm	650 g	610	Y	Feb 2018	EUR 2 299	amazon.com
3.		Canon 250D	122 mm	93 mm	70 mm	449 g	1070	n	Apr 2019	EUR 549	amazon.com
4.		Canon G5 X	112 mm	76 mm	44 mm	353 g	210	n	Oct 2015	EUR 789	ebay.com
5.		Canon G5 X Mark II	111 mm	61 mm	46 mm	340 g	230	n	Jul 2019	EUR 929	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 M3	111 mm	68 mm	44 mm	366 g	250	n	Feb 2015	EUR 749	ebay.com
8.		Canon M6	112 mm	68 mm	45 mm	390 g	295	n	Feb 2017	EUR 799	ebay.com
9.		Canon M50	116 mm	88 mm	59 mm	390 g	235	n	Feb 2018	EUR 779	ebay.com
10.		Canon M50 Mark II	116 mm	88 mm	59 mm	387 g	305	n	Oct 2020	EUR 599	ebay.com
11.		Canon R10	123 mm	88 mm	83 mm	429 g	450	n	May 2022	EUR 979	amazon.com
12.		Canon R100	116 mm	86 mm	69 mm	356 g	400	n	May 2023	EUR 579	amazon.com
13.		Nikon Z6	134 mm	101 mm	67 mm	675 g	310	Y	Aug 2018	EUR 2 449	ebay.com
14.		Sony A7 II	127 mm	96 mm	60 mm	599 g	350	Y	Nov 2014	EUR 2 099	ebay.com
15.		Sony A7R III	127 mm	96 mm	74 mm	650 g	650	Y	Oct 2017	EUR 3 499	ebay.com
16.		Sony A7R IV	129 mm	96 mm	78 mm	665 g	670	Y	Jul 2019	EUR 3 999	ebay.com
17.		Sony A9	127 mm	96 mm	63 mm	673 g	650	Y	Apr 2017	EUR 5 299	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 R50 was launched at a markedly lower price (by 66 percent) than the A7 III, which puts it into a different market segment. 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 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 R50 features an APS-C sensor and the Sony A7 III a full frame sensor. The sensor area in the A7 III is 155 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Even though the A7 III has a larger sensor, both cameras offer the same resolution of 24 megapixels. This implies that the A7 III has a lower pixel density and larger individual pixels (with a pixel pitch of 5.94μm versus 3.72μm for the R50), which gives it a potential advantage in terms of light gathering capacity. It should, however, be noted that the R50 is much more recent (by 4 years and 11 months) than the A7 III, and its sensor will have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size.

The Canon EOS R50 has a native sensitivity range from ISO 100 to ISO 32000, which can be extended to ISO 100-51200. The corresponding ISO settings for the Sony Alpha A7 III are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.

In terms of underlying technology, the R50 is build around a CMOS sensor, while the A7 III uses a BSI-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.

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar 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 R50	APS-C	24.0	6000	4000	4K/30p	24.1	13.9	2168	84
2.		Sony A7 III	Full Frame	24.0	6000	4000	4K/30p	25.0	14.7	3730	96
3.		Canon 250D	APS-C	24.0	6000	4000	4K/25p	23.9	13.4	1791	82
4.		Canon G5 X	1-inch	20.0	5472	3648	1080/60p	21.4	12.3	471	62
5.		Canon G5 X Mark II	1-inch	20.0	5472	3648	4K/30p	22.2	12.4	583	65
6.		Canon G7 X Mark II	1-inch	20.0	5472	3648	1080/60p	21.8	11.9	260	62
7.		Canon M3	APS-C	24.0	6000	4000	1080/30p	22.8	11.8	1169	72
8.		Canon M6	APS-C	24.0	6000	4000	1080/60p	23.4	12.6	1317	78
9.		Canon M50	APS-C	24.0	6000	4000	4K/24p	23.8	13.3	1684	81
10.		Canon M50 Mark II	APS-C	24.0	6000	4000	4K/24p	24.0	13.6	1939	83
11.		Canon R10	APS-C	24.0	6000	4000	4k/60p	24.1	13.8	2085	84
12.		Canon R100	APS-C	24.0	6000	4000	4k/24p	24.1	13.9	2197	84
13.		Nikon Z6	Full Frame	24.3	6048	4024	4K/30p	25.3	14.3	3299	95
14.		Sony A7 II	Full Frame	24.0	6000	4000	1080/60p	24.9	13.6	2449	90
15.		Sony A7R III	Full Frame	42.2	7952	5304	4K/30p	26.0	14.7	3523	100
16.		Sony A7R IV	Full Frame	60.2	9504	6336	4K/30p	26.0	14.8	3344	99
17.		Sony A9	Full Frame	24.0	6000	4000	4K/30p	24.9	13.3	3517	92
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, and both provide the same movie specifications (4K/30p).

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the R50 offers a slightly higher resolution than the one in the A7 III (2360k vs 2359k dots). The following table reports on some other key feature differences and similarities of the Canon R50, the Sony A7 III, 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 R50	2360	n	3.0 / 1620	swivel	Y	1/4000s	12.0/s	Y	n
2.		Sony A7 III	2359	n	3.0 / 922	tilting	Y	1/8000s	10.0/s	n	Y
3.		Canon 250D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
4.		Canon G5 X	2360	n	3.0 / 1040	swivel	Y	1/2000s	5.9/s	Y	Y
5.		Canon G5 X Mark II	2360	n	3.0 / 1040	tilting	Y	1/2000s	30/s	Y	Y
6.		Canon G7 X Mark II	none	n	3.0 / 1040	tilting	Y	1/2000s	8.0/s	Y	Y
7.		Canon M3	optional	n	3.0 / 1040	tilting	Y	1/4000s	4.2/s	Y	n
8.		Canon M6	optional	n	3.0 / 1040	tilting	Y	1/4000s	9.0/s	Y	n
9.		Canon M50	2360	n	3.0 / 1040	swivel	Y	1/4000s	10.0/s	Y	n
10.		Canon M50 Mark II	2360	n	3.0 / 1040	swivel	Y	1/4000s	10.0/s	Y	n
11.		Canon R10	2360	n	3.0 / 1040	swivel	Y	1/8000s	15.0/s	Y	n
12.		Canon R100	2360	n	3.0 / 1040	fixed	n	1/4000s	6.5/s	Y	n
13.		Nikon Z6	3690	Y	3.2 / 2100	tilting	Y	1/8000s	12.0/s	n	Y
14.		Sony A7 II	2400	n	3.0 / 1230	tilting	n	1/8000s	5.0/s	n	Y
15.		Sony A7R III	3686	n	3.0 / 1440	tilting	Y	1/8000s	10.0/s	n	Y
16.		Sony A7R IV	5760	n	3.0 / 1440	tilting	Y	1/8000s	10.0/s	n	Y
17.		Sony A9	3686	n	3.0 / 1440	tilting	Y	1/8000s	20.0/s	n	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 R50 has one, while the A7 III does not. While the built-in flash of the R50 is not very powerful, it can at times be useful as a fill-in light.

The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, both cameras under consideration feature an electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).

The Canon R50 and the Sony A7 III both have an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.

The R50 writes its imaging data to SDXC cards, while the A7 III uses SDXC or Memory Stick PRO Duo cards. The A7 III features dual card slots, which can be very useful in case a memory card fails. In contrast, the R50 only has one slot. The A7 III supports UHS-II cards (on its first slot), while the R50 can use UHS-I 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 R50 and Sony Alpha A7 III 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 R50	Y	stereo / mono	Y	-	micro	3.2	Y	-	Y
2.		Sony A7 III	Y	stereo / mono	Y	Y	micro	3.1	Y	Y	Y
3.		Canon 250D	Y	stereo / mono	Y	-	mini	2.0	Y	-	Y
4.		Canon G5 X	Y	stereo / mono	-	-	mini	2.0	Y	Y	-
5.		Canon G5 X Mark II	-	stereo / mono	-	-	micro	3.1	Y	-	Y
6.		Canon G7 X Mark II	-	stereo / mono	-	-	micro	2.0	Y	Y	-
7.		Canon M3	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
8.		Canon M6	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
9.		Canon M50	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
10.		Canon M50 Mark II	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
11.		Canon R10	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
12.		Canon R100	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
13.		Nikon Z6	Y	stereo / mono	Y	Y	micro	3.1	Y	-	Y
14.		Sony A7 II	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-
15.		Sony A7R III	Y	stereo / mono	Y	Y	micro	3.1	Y	Y	Y
16.		Sony A7R IV	Y	stereo / mono	Y	Y	micro	3.1	Y	Y	Y
17.		Sony A9	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	Y

It is notable that the A7 III has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The R50 lacks such a headphone port.

Both the R50 and the A7 III are recent models that are part of the current product line-up. The A7 III replaced the earlier Sony A7 II, while the R50 does not have a direct predecessor. Further information on the features and operation of the R50 and A7 III can be found, respectively, in the Canon R50 Manual (free pdf) or the online Sony A7 III Manual.

Review summary

So what is the bottom line? Is there a clear favorite between the Canon R50 and the Sony A7 III? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

Reasons to prefer the Canon EOS R50:

• More detailed LCD: Has a higher resolution rear screen (1620k vs 922k 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 burst: Shoots at higher frequency (12 vs 10 flaps/sec) to capture the decisive moment.
• More compact: Is smaller (116x86mm vs 127x96mm) and thus needs less room in the bag.
• Less heavy: Is lighter (by 275g or 42 percent) and hence easier to carry around.
• Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
• Faster data transfer: Supports a more advanced USB protocol (3.2 vs 3.1).
• More affordable: Was introduced into a lower priced category (66 percent cheaper at launch).
• More modern: Reflects 4 years and 11 months of technical progress since the A7 III launch.

Arguments in favor of the Sony Alpha A7 III:

• 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 sound control: Has a headphone port that enables audio monitoring while recording.
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.58x).
• Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
• Longer lasting: Gets more shots (610 versus 230) out of a single battery charge.
• Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
• Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
• Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
• Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
• Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
• More heavily discounted: Has been around for much longer (launched in February 2018).

If the count of individual advantages (bullet points above) is taken as a guide, the A7 III is the clear winner of the contest (14 : 10 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 R50 and the Sony A7 III place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing 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 says little about, for example, the shooting experience and imaging performance of the R50 and the A7 III in practical situations. 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 R50	4/5	+ +	4.5/5	84/100	..	4.5/5	Feb 2023	EUR 829	amazon.com
2.		Sony A7 III	..	+ +	4.5/5	89/100	5/5	5/5	Feb 2018	EUR 2 299	amazon.com
3.		Canon 250D	4/5	o	4.5/5	79/100	4/5	4/5	Apr 2019	EUR 549	amazon.com
4.		Canon G5 X	5/5	+ +	..	78/100	4.5/5	4.5/5	Oct 2015	EUR 789	ebay.com
5.		Canon G5 X Mark II	4/5	+	4/5	82/100	..	4/5	Jul 2019	EUR 929	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 M3	4/5	o	..	75/100	4.5/5	4/5	Feb 2015	EUR 749	ebay.com
8.		Canon M6	..	..	..	80/100	4/5	4/5	Feb 2017	EUR 799	ebay.com
9.		Canon M50	..	+	4/5	79/100	..	3.5/5	Feb 2018	EUR 779	ebay.com
10.		Canon M50 Mark II	4/5	..	4/5	..	4.5/5	3.5/5	Oct 2020	EUR 599	ebay.com
11.		Canon R10	4/5	..	4.5/5	87/100	4/5	4.5/5	May 2022	EUR 979	amazon.com
12.		Canon R100	3/5	o	4.5/5	79/100	..	3.5/5	May 2023	EUR 579	amazon.com
13.		Nikon Z6	5/5	..	5/5	89/100	4.5/5	5/5	Aug 2018	EUR 2 449	ebay.com
14.		Sony A7 II	5/5	+	4/5	82/100	4.5/5	5/5	Nov 2014	EUR 2 099	ebay.com
15.		Sony A7R III	..	+ +	4/5	90/100	4.5/5	5/5	Oct 2017	EUR 3 499	ebay.com
16.		Sony A7R IV	5/5	+	4.5/5	91/100	4.5/5	5/5	Jul 2019	EUR 3 999	ebay.com
17.		Sony A9	5/5	+ +	4.8/5	89/100	5/5	5/5	Apr 2017	EUR 5 299	ebay.com
Note: (+ +) 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. Thus, a score needs to be put into the context of the launch date and the launch price 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, please note that some of the review sites have changed their methodology and reporting over time.

Check R50 price at
amazon.com
Check A7 III price at
amazon.com

Other camera comparisons

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