Canon SX420 vs Olympus TG-6

The Canon PowerShot SX420 IS and the Olympus Tough TG-6 are two digital cameras that were revealed to the public, respectively, in January 2016 and May 2019. Both the SX420 and the TG-6 are fixed lens compact cameras that are equipped with a 1/2.3-inch sensor. The Canon has a resolution of 19.9 megapixels, whereas the Olympus provides 12 MP.

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

Headline Specifications

Canon SX420		Olympus TG-6
Fixed lens compact camera		Fixed lens compact camera
24-1008mm f/3.5-6.6		25-100mm f/2.0-4.9
19.9 MP – 1/2.3" sensor		12 MP – 1/2.3" sensor
720/25p Video		4K/30p Video
ISO 100-1,600		ISO 100-12,800
No viewfinder, LCD framing		No viewfinder, LCD framing
3.0" LCD – 230k dots		3.0" LCD – 1040k dots
Fixed screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
0.5 shutter flaps per second		20 shutter flaps per second
Lens-based stabilization		In-body stabilization
not weather sealed		Waterproof body (15m)
195 shots per battery charge		340 shots per battery charge
104 x 69 x 85 mm, 325 g		113 x 66 x 32 mm, 253 g

Check SX420 offers at
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Check TG-6 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 Olympus Tough TG-6? 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 Olympus TG-6. 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.

Both cameras are available in two different colors (black, red).

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus TG-6 is somewhat larger (4 percent) than the Canon SX420. However, the TG-6 is markedly lighter (22 percent) than the SX420. It is noteworthy in this context that the TG-6 is splash and dust-proof, while the SX420 does not feature any corresponding weather-sealing. More than that, the TG-6 is water-proof up to 15m and can, thus, be used for underwater photography.

Concerning battery life, the SX420 gets 195 shots out of its Canon NB-11LH battery, while the TG-6 can take 340 images on a single charge of its Olympus LI-92B power pack. The power pack in the TG-6 can be charged via the USB port, which can be very convenient when travelling.

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	Street Price
1.		Canon SX420	104 mm	69 mm	85 mm	325 g	195	n	Jan 2016	US$ 299	ebay.com
2.		Olympus TG-6	113 mm	66 mm	32 mm	253 g	340	Y	May 2019	US$ 449	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 M100	108 mm	67 mm	35 mm	302 g	295	n	Aug 2017	US$ 499	ebay.com
6.		Canon SX410	104 mm	69 mm	85 mm	325 g	185	n	Feb 2015	US$ 279	ebay.com
7.		Canon SX430	104 mm	69 mm	85 mm	323 g	195	n	Jan 2017	US$ 299	ebay.com
8.		Canon SX610	105 mm	61 mm	27 mm	191 g	270	n	Jan 2015	US$ 249	ebay.com
9.		Canon SX620	97 mm	57 mm	28 mm	182 g	295	n	May 2016	US$ 279	ebay.com
10.		Canon SX710	113 mm	66 mm	35 mm	269 g	230	n	Jan 2015	US$ 349	ebay.com
11.		Canon SX720	110 mm	64 mm	36 mm	270 g	250	n	Feb 2016	US$ 379	ebay.com
12.		Canon SX730	110 mm	64 mm	40 mm	300 g	250	n	Apr 2017	US$ 399	ebay.com
13.		Olympus E-PM1	110 mm	64 mm	34 mm	265 g	330	n	Jun 2011	US$ 499	ebay.com
14.		Olympus TG-4	112 mm	66 mm	31 mm	247 g	380	Y	Apr 2015	US$ 379	ebay.com
15.		Olympus TG-5	113 mm	66 mm	32 mm	250 g	340	Y	May 2017	US$ 449	ebay.com
16.		Olympus XZ-1	111 mm	65 mm	42 mm	275 g	320	n	Jan 2011	US$ 499	ebay.com
17.		OM System TG-7	114 mm	66 mm	33 mm	249 g	330	Y	Sep 2023	US$ 549	amazon.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 SX420 was launched at a markedly lower price (by 33 percent) than the TG-6, 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 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.

Both cameras under consideration feature a 1/2.3-inch sensor and have a format factor (sometimes also referred to as "crop factor") of 5.6. Within the spectrum of camera sensors, this places the review cameras among the smaller-sensor digicams that favor affordability and compact design. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

While the two cameras under review share the same sensor size, the SX420 offers a higher resolution of 19.9 megapixels, compared with 12 MP of the TG-6. This megapixels advantage translates into a 29 percent gain in linear resolution. On the other hand, these sensor specs imply that the SX420 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 1.19μm versus 1.53μm for the TG-6). Moreover, it should be noted that the TG-6 is much more recent (by 3 years and 4 months) than the SX420, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of individual pixels. 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 Canon SX420 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the SX420 for good quality output (200 dots per inch) amounts to 25.8 x 19.3 inches or 65.4 x 49.1 cm, for very good quality (250 dpi) 20.6 x 15.5 inches or 52.3 x 39.3 cm, and for excellent quality (300 dpi) 17.2 x 12.9 inches or 43.6 x 32.7 cm. The corresponding values for the Olympus TG-6 are 20 x 15 inches or 50.8 x 38.1 cm for good quality, 16 x 12 inches or 40.6 x 30.5 cm for very good quality, and 13.3 x 10 inches or 33.9 x 25.4 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 Olympus Tough TG-6 are ISO 100 to ISO 12800 (no boost).

In terms of underlying technology, the SX420 is build around a CCD sensor, while the TG-6 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.

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 SX420	1/2.3	19.9	5152	3864	720/25p	20.3	11.7	806	48
2.		Olympus TG-6	1/2.3	12.0	4000	3000	4K/30p	20.7	12.2	1127	52
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 M100	APS-C	24.0	6000	4000	1080/60p	23.5	12.9	1272	78
6.		Canon SX410	1/2.3	19.9	5152	3864	720/30p	20.2	11.6	720	47
7.		Canon SX430	1/2.3	19.9	5152	3864	720/25p	20.5	11.9	900	49
8.		Canon SX610	1/2.3	20.2	5184	3888	1080/30p	20.2	11.6	712	47
9.		Canon SX620	1/2.3	20.2	5184	3888	1080/30p	20.4	11.8	838	49
10.		Canon SX710	1/2.3	20.2	5184	3888	1080/60p	20.2	11.6	712	47
11.		Canon SX720	1/2.3	20.2	5184	3888	1080/60p	20.3	11.8	817	48
12.		Canon SX730	1/2.3	20.2	5184	3888	1080/60p	20.5	11.9	924	50
13.		Olympus E-PM1	Four Thirds	12.2	4032	3024	1080/60i	21.0	10.3	499	52
14.		Olympus TG-4	1/2.3	15.9	4608	3456	1080/30p	20.2	11.6	737	47
15.		Olympus TG-5	1/2.3	12.0	4000	3000	4K/30p	20.5	11.9	934	50
16.		Olympus XZ-1	1/1.7	10.1	3664	2752	720/30p	18.8	10.4	117	34
17.		OM System TG-7	1/2.3	12.0	4000	3000	4K/30p	20.9	12.7	1553	54
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 two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the TG-6 provides a better video resolution than the SX420. It can shoot movie footage at 4K/30p, while the Canon is limited to 720/25p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. The SX420 and the TG-6 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. The adjacent table lists some of the other core features of the Canon SX420 and Olympus TG-6 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 SX420	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
2.		Olympus TG-6	none	n	3.0 / 1040	fixed	n	1/2000s	20.0/s	Y	Y
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 M100	none	n	3.0 / 1040	tilting	Y	1/4000s	6.1/s	Y	n
6.		Canon SX410	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
7.		Canon SX430	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
8.		Canon SX610	none	n	3.0 / 922	fixed	n	1/2000s	2.5/s	Y	Y
9.		Canon SX620	none	n	3.0 / 922	fixed	n	1/2000s	2.5/s	Y	Y
10.		Canon SX710	none	n	3.0 / 922	fixed	n	1/3200s	6.0/s	Y	Y
11.		Canon SX720	none	n	3.0 / 922	fixed	n	1/3200s	5.9/s	Y	Y
12.		Canon SX730	none	n	3.0 / 922	tilting	n	1/3200s	5.9/s	Y	Y
13.		Olympus E-PM1	optional	n	3.0 / 460	fixed	n	1/4000s	5.5/s	n	Y
14.		Olympus TG-4	none	n	3.0 / 460	fixed	n	1/2000s	5.0/s	Y	Y
15.		Olympus TG-5	none	n	3.0 / 460	fixed	n	1/2000s	20.0/s	Y	Y
16.		Olympus XZ-1	optional	n	3.0 / 614	fixed	n	1/2000s	2.0/s	Y	Y
17.		OM System TG-7	none	n	3.0 / 1040	fixed	n	1/2000s	20.0/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

The Olympus TG-6 has 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.

Both the SX420 and the TG-6 have zoom lenses built in. The SX420 has a 24-1008mm f/3.5-6.6 optic and the TG-6 offers a 25-100mm f/2.0-4.9 (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 Olympus. The TG-6 offers the faster maximum aperture.

Concerning the storage of imaging data, both the SX420 and the TG-6 write their files to SDXC cards. The TG-6 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the SX420 cannot take advantage of Ultra High Speed SD 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 Olympus Tough TG-6 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.		Olympus TG-6	-	stereo / mono	-	-	micro	2.0	Y	-	-
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 M100	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
6.		Canon SX410	-	stereo / mono	-	-	-	2.0	-	-	-
7.		Canon SX430	-	mono / mono	-	-	-	2.0	Y	Y	-
8.		Canon SX610	-	- / -	-	-	micro	2.0	Y	Y	-
9.		Canon SX620	-	mono / mono	-	-	micro	2.0	Y	Y	-
10.		Canon SX710	-	stereo / mono	-	-	micro	2.0	Y	Y	-
11.		Canon SX720	-	stereo / mono	-	-	micro	2.0	Y	Y	-
12.		Canon SX730	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
13.		Olympus E-PM1	Y	stereo / mono	-	-	mini	2.0	-	-	-
14.		Olympus TG-4	-	stereo / mono	-	-	micro	2.0	Y	-	-
15.		Olympus TG-5	-	stereo / mono	-	-	micro	2.0	Y	-	-
16.		Olympus XZ-1	Y	mono / -	-	-	mini	2.0	-	-	-
17.		OM System TG-7	-	stereo / mono	-	-	micro	2.0	Y	-	-

Travel and landscape photographers will find it useful that the TG-6 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the SX420 and the TG-6 have been discontinued, but can regularly be found used on ebay. The SX420 was replaced by the Canon SX430, while the TG-6 was followed by the OM System TG-7. Further information on the features and operation of the SX420 and TG-6 can be found, respectively, in the Canon SX420 Manual (free pdf) or the online Olympus TG-6 Manual.

Review summary

So what conclusions can be drawn? Is there a clear favorite between the Canon SX420 and the Olympus TG-6? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

Advantages of the Canon PowerShot SX420 IS:

• More detail: Offers more megapixels (19.9 vs 12MP) with a 29% higher linear resolution.
• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
• Wider view: Has a wider-angle lens that facilitates landscape or interior shots.
• More tele-reach: Has a longer tele-lens for perspective compression and subject magnification.
• Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
• More affordable: Was introduced into a lower priced category (33 percent cheaper at launch).
• More heavily discounted: Has been available for much longer (launched in January 2016).

Arguments in favor of the Olympus Tough TG-6:

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Better video: Provides higher definition movie capture (4K/30p vs 720/25p).
• More detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
• Faster burst: Shoots at higher frequency (20 vs 0.5 flaps/sec) to capture the decisive moment.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• Better light gathering: Has a lens with a wider maximum aperture (f/2.0 vs f/3.5).
• Less heavy: Has a lower weight (by 72g or 22 percent) and is thus easier to take along.
• Longer lasting: Gets more shots (340 versus 195) out of a single battery charge.
• Easier travel charging: Can be conveniently charged via its USB port.
• Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
• Water-proof: Is rugged and sealed and can thus be used for underwater photography (up to 15m).
• Easier geotagging: Features an internal GPS sensor to log localization data.
• Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
• More modern: Reflects 3 years and 4 months of technical progress since the SX420 launch.

If the count of individual advantages (bullet points above) is taken as a guide, the TG-6 is the clear winner of the contest (14 : 8 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.

How about other alternatives? Do the specifications of the Canon SX420 and the Olympus TG-6 place the cameras among the top in their class? Find out in the latest Best Superzoom Camera and Best Travel-Zoom 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 TG-6 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	Street Price
1.		Canon SX420	..	..	..	..	..	3/5	Jan 2016	US$ 299	ebay.com
2.		Olympus TG-6	4/5	+ +	4.5/5	76/100	4/5	4/5	May 2019	US$ 449	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 M100	3/5	+	..	..	4/5	3.5/5	Aug 2017	US$ 499	ebay.com
6.		Canon SX410	..	o	..	..	..	..	Feb 2015	US$ 279	ebay.com
7.		Canon SX430	..	..	..	..	3.5/5	3.5/5	Jan 2017	US$ 299	ebay.com
8.		Canon SX610	..	..	..	..	4/5	4/5	Jan 2015	US$ 249	ebay.com
9.		Canon SX620	..	..	..	..	..	4/5	May 2016	US$ 279	ebay.com
10.		Canon SX710	..	+	..	..	4/5	3.5/5	Jan 2015	US$ 349	ebay.com
11.		Canon SX720	..	+	..	..	4/5	4.5/5	Feb 2016	US$ 379	ebay.com
12.		Canon SX730	..	+	..	..	4/5	4/5	Apr 2017	US$ 399	ebay.com
13.		Olympus E-PM1	..	86/100	..	71/100	4.5/5	4.5/5	Jun 2011	US$ 499	ebay.com
14.		Olympus TG-4	..	+	..	79/100	4/5	4/5	Apr 2015	US$ 379	ebay.com
15.		Olympus TG-5	..	+ +	4.5/5	..	4/5	4/5	May 2017	US$ 449	ebay.com
16.		Olympus XZ-1	4/5	..	..	74/100	4.5/5	4.5/5	Jan 2011	US$ 499	ebay.com
17.		OM System TG-7	4/5	..	4.5/5	..	4/5	4/5	Sep 2023	US$ 549	amazon.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

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