YI M1 vs Olympus TG-5

The YI M1 and the Olympus Tough TG-5 are two digital cameras that were officially introduced, respectively, in September 2016 and May 2017. The M1 is a mirrorless interchangeable lens camera, while the TG-5 is a fixed lens compact. The cameras are based on a Four Thirds (M1) and a 1/2.3-inch (TG-5) sensor. The YI has a resolution of 20.2 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

YI M1		Olympus TG-5
Mirrorless system camera		Fixed lens compact camera
Micro Four Thirds lenses		25-100mm f/2.0-4.9
20.2 MP – Four Thirds sensor		12 MP – 1/2.3" sensor
4K/30p Video		4K/30p Video
ISO 100-25,600		ISO 100-12,800
No viewfinder, LCD framing		No viewfinder, LCD framing
3.0" LCD – 1040k dots		3.0" LCD – 460k dots
Fixed touchscreen		Fixed screen (not touch-sensitive)
5 shutter flaps per second		20 shutter flaps per second
Lens stabilization only		In-body stabilization
not weather sealed		Waterproof body (15m)
450 shots per battery charge		340 shots per battery charge
114 x 64 x 34 mm, 281 g		113 x 66 x 32 mm, 250 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the YI M1 and the Olympus Tough TG-5? 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 YI M1 and the Olympus TG-5 are illustrated 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.

The M1 can be obtained in two different colors (black, silver), while the TG-5 is also available in two color-versions, but different ones (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-5 is somewhat larger (2 percent) than the YI M1. It is noteworthy in this context that the TG-5 is splash and dust-proof, while the M1 does not feature any corresponding weather-sealing. More than that, the TG-5 is water-proof up to 15m and can, thus, be used for underwater photography.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the TG-5 has a lens built in, whereas the M1 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 M1 and their specifications in the Micro Four Thirds Lens Catalog.

Concerning battery life, the M1 gets 450 shots out of its YI BXM-10 battery, while the TG-5 can take 340 images on a single charge of its Olympus LI-92B power pack. The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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.		YI M1	114 mm	64 mm	34 mm	281 g	450	n	Sep 2016	349	ebay.com
2.		Olympus TG-5	113 mm	66 mm	32 mm	250 g	340	Y	May 2017	449	ebay.com
3.		Canon SX430	104 mm	69 mm	85 mm	323 g	195	n	Jan 2017	299	ebay.com
4.		Canon SX730	110 mm	64 mm	40 mm	300 g	250	n	Apr 2017	399	ebay.com
5.		Canon SX420	104 mm	69 mm	85 mm	325 g	195	n	Jan 2016	299	ebay.com
6.		Canon SX720	110 mm	64 mm	36 mm	270 g	250	n	Feb 2016	379	ebay.com
7.		Canon SX710	113 mm	66 mm	35 mm	269 g	230	n	Jan 2015	349	ebay.com
8.		Fujifilm X-A3	117 mm	67 mm	40 mm	339 g	410	n	Aug 2016	399	ebay.com
9.		Nikon 1 J5	98 mm	60 mm	32 mm	231 g	250	n	Apr 2015	399	ebay.com
10.		Olympus TG-6	113 mm	66 mm	32 mm	253 g	340	Y	May 2019	449	ebay.com
11.		Olympus TG-4	112 mm	66 mm	31 mm	247 g	380	Y	Apr 2015	379	ebay.com
12.		Olympus XZ-1	111 mm	65 mm	42 mm	275 g	320	n	Jan 2011	499	ebay.com
13.		OM System TG-7	114 mm	66 mm	33 mm	249 g	330	Y	Sep 2023	549	amazon.com
14.		Panasonic GX850	107 mm	65 mm	33 mm	269 g	210	n	Jan 2017	549	ebay.com
15.		Panasonic GF7	107 mm	65 mm	33 mm	266 g	230	n	Jan 2015	499	ebay.com
16.		Sony HX80	102 mm	58 mm	36 mm	245 g	390	n	Mar 2016	349	ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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Any camera decision will obviously take relative prices into account. 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. 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 generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the YI M1 features a Four Thirds sensor and the Olympus TG-5 a 1/2.3-inch sensor. The sensor area in the TG-5 is 88 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 5.6. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

With 20.2MP, the M1 offers a higher resolution than the TG-5 (12MP), but the M1 nevertheless has larger individual pixels (pixel pitch of 3.34μm versus 1.53μm for the TG-5) due to its larger sensor. However, the TG-5 is a somewhat more recent model (by 7 months) than the M1, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels.

The resolution advantage of the YI M1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the M1 for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 cm. The corresponding values for the Olympus TG-5 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 YI M1 has a native sensitivity range from ISO 100 to ISO 25600. The corresponding ISO settings for the Olympus Tough TG-5 are ISO 100 to ISO 12800 (no boost).

In terms of underlying technology, the M1 is build around a CMOS sensor, while the TG-5 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 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics

#		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		YI M1	Four Thirds	20.2	5184	3888	4K/30p	23.0	12.6	1030	73
2.		Olympus TG-5	1/2.3	12.0	4000	3000	4K/30p	20.5	11.9	934	50
3.		Canon SX430	1/2.3	19.9	5152	3864	720/25p	20.5	11.9	900	49
4.		Canon SX730	1/2.3	20.2	5184	3888	1080/60p	20.5	11.9	924	50
5.		Canon SX420	1/2.3	19.9	5152	3864	720/25p	20.3	11.7	806	48
6.		Canon SX720	1/2.3	20.2	5184	3888	1080/60p	20.3	11.8	817	48
7.		Canon SX710	1/2.3	20.2	5184	3888	1080/60p	20.2	11.6	712	47
8.		Fujifilm X-A3	APS-C	24.0	6000	4000	1080/60p	23.8	13.1	1664	81
9.		Nikon 1 J5	1-inch	20.7	5568	3712	4K/15p	21.1	12.0	479	65
10.		Olympus TG-6	1/2.3	12.0	4000	3000	4K/30p	20.7	12.2	1127	52
11.		Olympus TG-4	1/2.3	15.9	4608	3456	1080/30p	20.2	11.6	737	47
12.		Olympus XZ-1	1/1.7	10.1	3664	2752	720/30p	18.8	10.4	117	34
13.		OM System TG-7	1/2.3	12.0	4000	3000	4K/30p	20.9	12.7	1553	54
14.		Panasonic GX850	Four Thirds	15.8	4592	3448	4K/30p	23.2	13.3	586	73
15.		Panasonic GF7	Four Thirds	15.8	4592	3448	1080/60p	22.7	12.3	874	70
16.		Sony HX80	1/2.3	18.0	4896	3672	1080/60p	20.4	11.8	822	48
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. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, 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 M1 and the TG-5 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 YI M1 and Olympus TG-5 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.		YI M1	none	n	3.0 / 1040	fixed	Y	1/4000s	5.0/s	n	n
2.		Olympus TG-5	none	n	3.0 / 460	fixed	n	1/2000s	20.0/s	Y	Y
3.		Canon SX430	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
4.		Canon SX730	none	n	3.0 / 922	tilting	n	1/3200s	5.9/s	Y	Y
5.		Canon SX420	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
6.		Canon SX720	none	n	3.0 / 922	fixed	n	1/3200s	5.9/s	Y	Y
7.		Canon SX710	none	n	3.0 / 922	fixed	n	1/3200s	6.0/s	Y	Y
8.		Fujifilm X-A3	none	n	3.0 / 1040	tilting	Y	1/4000s	6.0/s	Y	n
9.		Nikon 1 J5	none	n	3.0 / 1037	tilting	Y	1/4000s	60.0/s	Y	n
10.		Olympus TG-6	none	n	3.0 / 1040	fixed	n	1/2000s	20.0/s	Y	Y
11.		Olympus TG-4	none	n	3.0 / 460	fixed	n	1/2000s	5.0/s	Y	Y
12.		Olympus XZ-1	optional	n	3.0 / 614	fixed	n	1/2000s	2.0/s	Y	Y
13.		OM System TG-7	none	n	3.0 / 1040	fixed	n	1/2000s	20.0/s	Y	Y
14.		Panasonic GX850	none	n	3.0 / 1040	tilting	Y	1/500s	10.0/s	Y	n
15.		Panasonic GF7	none	n	3.0 / 1040	tilting	Y	1/500s	5.8/s	Y	n
16.		Sony HX80	638	n	3.0 / 922	tilting	n	1/2000s	10.0/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The M1 has a touchscreen, while the TG-5 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The YI M1 and the Olympus TG-5 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.

Concerning the storage of imaging data, both the M1 and the TG-5 write their files to SDXC cards. The TG-5 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the M1 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 YI M1 and Olympus Tough TG-5 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.		YI M1	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
2.		Olympus TG-5	-	stereo / mono	-	-	micro	2.0	Y	-	-
3.		Canon SX430	-	mono / mono	-	-	-	2.0	Y	Y	-
4.		Canon SX730	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
5.		Canon SX420	-	mono / mono	-	-	-	2.0	Y	Y	-
6.		Canon SX720	-	stereo / mono	-	-	micro	2.0	Y	Y	-
7.		Canon SX710	-	stereo / mono	-	-	micro	2.0	Y	Y	-
8.		Fujifilm X-A3	Y	stereo / mono	-	-	micro	2.0	Y	-	-
9.		Nikon 1 J5	-	stereo / mono	-	-	micro	2.0	Y	Y	-
10.		Olympus TG-6	-	stereo / mono	-	-	micro	2.0	Y	-	-
11.		Olympus TG-4	-	stereo / mono	-	-	micro	2.0	Y	-	-
12.		Olympus XZ-1	Y	mono / -	-	-	mini	2.0	-	-	-
13.		OM System TG-7	-	stereo / mono	-	-	micro	2.0	Y	-	-
14.		Panasonic GX850	-	stereo / mono	-	-	micro	2.0	Y	-	-
15.		Panasonic GF7	-	stereo / mono	-	-	micro	2.0	Y	Y	-
16.		Sony HX80	-	stereo / mono	-	-	micro	2.0	Y	Y	-

It is notable that the M1 has a hotshoe, while the TG-5 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Travel and landscape photographers will find it useful that the TG-5 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the M1 and the TG-5 have been discontinued, but can regularly be found used on ebay. The TG-5 was replaced by the Olympus TG-6, while the M1 does not have a direct successor. Further information on the features and operation of the M1 and TG-5 can be found, respectively, in the YI M1 Manual (free pdf) or the online Olympus TG-5 Manual.

Review summary

So what is the bottom line? Which of the two cameras – the YI M1 or the Olympus TG-5 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

Advantages of the YI M1:

• More detail: Offers more megapixels (20.2 vs 12MP) with a 30% higher linear resolution.
• 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.
• More detailed LCD: Has a higher resolution rear screen (1040k vs 460k dots).
• Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
• Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
• More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
• Longer lasting: Can take more shots (450 versus 340) on a single battery charge.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• Easier wireless transfer: Supports Bluetooth for image sharing without cables.
• More heavily discounted: Has been on the market for longer (launched in September 2016).

Arguments in favor of the Olympus Tough TG-5:

• Faster burst: Shoots at higher frequency (20 vs 5 flaps/sec) to capture the decisive moment.
• Ready to shoot: Has an integrated lens, whereas the M1 necessitates an extra lens.
• Less heavy: Has a lower weight even though it has a lens built in (unlike the M1).
• 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.
• Water-proof: Is rugged and sealed and can thus be used for underwater photography (up to 15m).
• Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
• 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: Was introduced somewhat (7 months) more recently.

If the count of relative strengths (bullet points above) is taken as a measure, the M1 emerges as the winner of the contest (13 : 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 YI M1 and the Olympus TG-5 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best Travel-Zoom Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the M1 or the TG-5. 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 where reviews by experts come in. 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.		YI M1	..	..	..	69/100	..	..	Sep 2016	349	ebay.com
2.		Olympus TG-5	..	+ +	4.5/5	..	4/5	4/5	May 2017	449	ebay.com
3.		Canon SX430	..	..	..	..	3.5/5	3.5/5	Jan 2017	299	ebay.com
4.		Canon SX730	..	+	..	..	4/5	4/5	Apr 2017	399	ebay.com
5.		Canon SX420	..	..	..	..	..	3/5	Jan 2016	299	ebay.com
6.		Canon SX720	..	+	..	..	4/5	4.5/5	Feb 2016	379	ebay.com
7.		Canon SX710	..	+	..	..	4/5	3.5/5	Jan 2015	349	ebay.com
8.		Fujifilm X-A3	..	..	..	74/100	4.5/5	4/5	Aug 2016	399	ebay.com
9.		Nikon 1 J5	..	..	..	..	4.5/5	4.5/5	Apr 2015	399	ebay.com
10.		Olympus TG-6	4/5	+ +	4.5/5	76/100	4/5	4/5	May 2019	449	ebay.com
11.		Olympus TG-4	..	+	..	79/100	4/5	4/5	Apr 2015	379	ebay.com
12.		Olympus XZ-1	4/5	..	..	74/100	4.5/5	4.5/5	Jan 2011	499	ebay.com
13.		OM System TG-7	4/5	..	4.5/5	..	4/5	4/5	Sep 2023	549	amazon.com
14.		Panasonic GX850	..	+	..	76/100	4.5/5	4.5/5	Jan 2017	549	ebay.com
15.		Panasonic GF7	4/5	+	..	..	4.5/5	4.5/5	Jan 2015	499	ebay.com
16.		Sony HX80	..	..	..	..	..	..	Mar 2016	349	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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. 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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