Olympus XZ-1 vs OM System TG-7

The Olympus XZ-1 and the OM System Tough TG-7 are two digital cameras that were officially introduced, respectively, in January 2011 and September 2023. Both the XZ-1 and the TG-7 are fixed lens compact cameras that are based on a 1/1.7-inch (XZ-1) and a 1/2.3-inch (TG-7) sensor. The Olympus has a resolution of 10.1 megapixels, whereas the OM System provides 12 MP.

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

Headline Specifications

Olympus XZ-1		OM System TG-7
Fixed lens compact camera		Fixed lens compact camera
28-112mm f/1.8-2.5		25-100mm f/2.0-4.9
10.1 MP – 1/1.7" sensor		12 MP – 1/2.3" sensor
720/30p Video		4K/30p Video
ISO 100-6,400		ISO 100-12,800
Viewfinder optional		No viewfinder, LCD framing
3.0" LCD – 614k dots		3.0" LCD – 1040k dots
Fixed screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
2 shutter flaps per second		20 shutter flaps per second
In-body stabilization		In-body stabilization
not weather sealed		Waterproof body (15m)
320 shots per battery charge		330 shots per battery charge
111 x 65 x 42 mm, 275 g		114 x 66 x 33 mm, 249 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus XZ-1 and the OM System Tough TG-7? 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 Olympus XZ-1 and the OM System TG-7 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 size dimensions are rounded to the nearest millimeter.

The XZ-1 can be obtained in two different colors (black, white), while the TG-7 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 OM System TG-7 is somewhat larger (4 percent) than the Olympus XZ-1. However, the TG-7 is markedly lighter (9 percent) than the XZ-1. It is noteworthy in this context that the TG-7 is splash and dust-proof, while the XZ-1 does not feature any corresponding weather-sealing. More than that, the TG-7 is water-proof up to 15m and can, thus, be used for underwater photography.

The power pack in the TG-7 can be charged via the USB port, 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. 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.		Olympus XZ-1	111 mm	65 mm	42 mm	275 g	320	n	Jan 2011	US$ 499	ebay.com
2.		OM System TG-7	114 mm	66 mm	33 mm	249 g	330	Y	Sep 2023	US$ 549	amazon.com
3.		Olympus E-PL1	115 mm	72 mm	42 mm	334 g	290	n	Feb 2010	US$ 599	ebay.com
4.		Olympus E-PL3	110 mm	64 mm	37 mm	313 g	300	n	Jun 2011	US$ 599	ebay.com
5.		Olympus E-PM1	110 mm	64 mm	34 mm	265 g	330	n	Jun 2011	US$ 499	ebay.com
6.		Olympus E-PM2	110 mm	64 mm	34 mm	269 g	360	n	Sep 2012	US$ 499	ebay.com
7.		Olympus TG-4	112 mm	66 mm	31 mm	247 g	380	Y	Apr 2015	US$ 379	ebay.com
8.		Olympus TG-5	113 mm	66 mm	32 mm	250 g	340	Y	May 2017	US$ 449	ebay.com
9.		Olympus TG-6	113 mm	66 mm	32 mm	253 g	340	Y	May 2019	US$ 449	ebay.com
10.		Olympus XZ-2	113 mm	65 mm	48 mm	346 g	340	n	Sep 2012	US$ 599	ebay.com
11.		Panasonic FZ150	124 mm	82 mm	92 mm	528 g	410	n	Aug 2011	US$ 499	ebay.com
12.		Panasonic FZ200	125 mm	87 mm	110 mm	588 g	540	n	Jul 2012	US$ 599	ebay.com
13.		Panasonic FZ300	132 mm	92 mm	117 mm	691 g	380	Y	Jul 2015	US$ 599	amazon.com
14.		Panasonic LX5	110 mm	65 mm	43 mm	271 g	400	n	Jul 2010	US$ 499	ebay.com
15.		Panasonic LX7	111 mm	68 mm	46 mm	298 g	330	n	Jul 2012	US$ 499	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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The XZ-1 was somewhat cheaper (by 9 percent) than the TG-7 at launch, but both cameras fall into the same price category. 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. 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. 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 associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Olympus XZ-1 features a 1/1.7-inch sensor and the OM System TG-7 a 1/2.3-inch sensor. The sensor area in the TG-7 is 39 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 4.4 and 5.6. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

Technology-wise, the TG-7 uses a more advanced image processing engine (TruePic VIII) than the XZ-1 (TruePic V), with benefits for noise reduction, color accuracy, and processing speed.

Despite having a smaller sensor, the TG-7 offers a higher resolution of 12 megapixels, compared with 10.1 MP of the XZ-1. 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 1.53μm versus 2.13μm for the XZ-1). However, it should be noted that the TG-7 is much more recent (by 12 years and 8 months) than the XZ-1, 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 OM System TG-7 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the TG-7 for good quality output (200 dots per inch) amounts to 20 x 15 inches or 50.8 x 38.1 cm, for very good quality (250 dpi) 16 x 12 inches or 40.6 x 30.5 cm, and for excellent quality (300 dpi) 13.3 x 10 inches or 33.9 x 25.4 cm. The corresponding values for the Olympus XZ-1 are 18.3 x 13.8 inches or 46.5 x 35 cm for good quality, 14.7 x 11 inches or 37.2 x 28 cm for very good quality, and 12.2 x 9.2 inches or 31 x 23.3 cm for excellent quality prints.

The Olympus XZ-1 has a native sensitivity range from ISO 100 to ISO 6400. The corresponding ISO settings for the OM System Tough TG-7 are ISO 100 to ISO 12800 (no boost).

In terms of underlying technology, the XZ-1 is build around a CCD sensor, while the TG-7 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.

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.		Olympus XZ-1	1/1.7	10.1	3664	2752	720/30p	18.8	10.4	117	34
2.		OM System TG-7	1/2.3	12.0	4000	3000	4K/30p	20.9	12.7	1553	54
3.		Olympus E-PL1	Four Thirds	12.2	4032	3024	720/30p	21.5	10.1	487	54
4.		Olympus E-PL3	Four Thirds	12.2	4032	3024	1080/60i	20.9	10.3	499	52
5.		Olympus E-PM1	Four Thirds	12.2	4032	3024	1080/60i	21.0	10.3	499	52
6.		Olympus E-PM2	Four Thirds	15.9	4608	3456	1080/30p	22.7	12.2	932	72
7.		Olympus TG-4	1/2.3	15.9	4608	3456	1080/30p	20.2	11.6	737	47
8.		Olympus TG-5	1/2.3	12.0	4000	3000	4K/30p	20.5	11.9	934	50
9.		Olympus TG-6	1/2.3	12.0	4000	3000	4K/30p	20.7	12.2	1127	52
10.		Olympus XZ-2	1/1.7	11.8	3968	2976	1080/30p	20.4	11.3	216	49
11.		Panasonic FZ150	1/2.3	12.0	4000	3000	1080/60p	19.4	10.9	132	40
12.		Panasonic FZ200	1/2.3	12.0	4000	3000	1080/60p	19.1	10.8	114	37
13.		Panasonic FZ300	1/2.3	12.0	4000	3000	4K/30p	19.3	11.0	97	38
14.		Panasonic LX5	1/1.7	10.0	3648	2736	720/60p	19.6	10.8	132	41
15.		Panasonic LX7	1/1.7	10.0	3648	2736	1080/60p	20.7	11.7	147	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. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the TG-7 provides a better video resolution than the XZ-1. It can shoot movie footage at 4K/30p, while the Olympus is limited to 720/30p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The XZ-1 and the TG-7 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 XZ-1 can be equipped with an optional viewfinder – the VF-2. The table below summarizes some of the other core capabilities of the Olympus XZ-1 and OM System TG-7 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.		Olympus XZ-1	optional	n	3.0 / 614	fixed	n	1/2000s	2.0/s	Y	Y
2.		OM System TG-7	none	n	3.0 / 1040	fixed	n	1/2000s	20.0/s	Y	Y
3.		Olympus E-PL1	optional	n	2.7 / 230	fixed	n	1/2000s	3.0/s	Y	Y
4.		Olympus E-PL3	optional	n	3.0 / 460	tilting	n	1/4000s	5.5/s	n	Y
5.		Olympus E-PM1	optional	n	3.0 / 460	fixed	n	1/4000s	5.5/s	n	Y
6.		Olympus E-PM2	optional	n	3.0 / 460	fixed	Y	1/4000s	8.0/s	n	Y
7.		Olympus TG-4	none	n	3.0 / 460	fixed	n	1/2000s	5.0/s	Y	Y
8.		Olympus TG-5	none	n	3.0 / 460	fixed	n	1/2000s	20.0/s	Y	Y
9.		Olympus TG-6	none	n	3.0 / 1040	fixed	n	1/2000s	20.0/s	Y	Y
10.		Olympus XZ-2	optional	n	3.0 / 920	tilting	Y	1/2000s	5.0/s	Y	Y
11.		Panasonic FZ150	202	n	3.0 / 460	swivel	n	1/2000s	12.0/s	Y	Y
12.		Panasonic FZ200	1312	n	3.0 / 460	swivel	n	1/4000s	12.0/s	Y	Y
13.		Panasonic FZ300	1440	n	3.0 / 1040	swivel	Y	1/4000s	12.0/s	Y	Y
14.		Panasonic LX5	optional	n	3.0 / 460	fixed	n	1/4000s	2.5/s	Y	Y
15.		Panasonic LX7	optional	n	3.0 / 920	fixed	n	1/4000s	11.0/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

The Olympus XZ-1 and the OM System TG-7 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.

Both the XZ-1 and the TG-7 have zoom lenses built in. The XZ-1 has a 28-112mm f/1.8-2.5 optic and the TG-7 offers a 25-100mm f/2.0-4.9 (focal lengths in full frame equivalent terms). Hence, the OM System provides a wider angle of view at the short end than the Olympus, but less tele-photo reach at the long end. The XZ-1 offers the faster maximum aperture.

Concerning the storage of imaging data, both the XZ-1 and the TG-7 write their files to SDXC cards. The TG-7 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the XZ-1 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 Olympus XZ-1 and OM System Tough TG-7 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.		Olympus XZ-1	Y	mono / -	-	-	mini	2.0	-	-	-
2.		OM System TG-7	-	stereo / mono	-	-	micro	2.0	Y	-	-
3.		Olympus E-PL1	Y	stereo / -	-	-	mini	2.0	-	-	-
4.		Olympus E-PL3	Y	stereo / -	-	-	mini	2.0	-	-	-
5.		Olympus E-PM1	Y	stereo / mono	-	-	mini	2.0	-	-	-
6.		Olympus E-PM2	Y	stereo / mono	-	-	mini	2.0	-	-	-
7.		Olympus TG-4	-	stereo / mono	-	-	micro	2.0	Y	-	-
8.		Olympus TG-5	-	stereo / mono	-	-	micro	2.0	Y	-	-
9.		Olympus TG-6	-	stereo / mono	-	-	micro	2.0	Y	-	-
10.		Olympus XZ-2	Y	stereo / mono	-	-	mini	2.0	-	-	-
11.		Panasonic FZ150	Y	stereo / -	-	-	mini	2.0	-	-	-
12.		Panasonic FZ200	Y	stereo / mono	Y	-	mini	2.0	-	-	-
13.		Panasonic FZ300	Y	stereo / mono	Y	-	mini	2.0	Y	-	-
14.		Panasonic LX5	Y	mono / mono	-	-	mini	2.0	-	-	-
15.		Panasonic LX7	Y	stereo / mono	-	-	mini	2.0	-	-	-

It is notable that the XZ-1 has a hotshoe, while the TG-7 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-7 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

The TG-7 is a recent model that features in the current product line-up of OM System. In contrast, the XZ-1 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the XZ-1 was succeeded by the Olympus XZ-2. Further information on the features and operation of the XZ-1 and TG-7 can be found, respectively, in the Olympus XZ-1 Manual (free pdf) or the online OM System TG-7 Manual.

Review summary

So how do things add up? Is the Olympus XZ-1 better than the OM System TG-7 or vice versa? A synthesis of the relative strong points of each of the models is listed below.

Reasons to prefer the Olympus XZ-1:

• More framing options: Can be equipped with a hotshoe-mounted accessory-viewfinder.
• Better light gathering: Has a lens with a wider maximum aperture (f/1.8 vs f/2.0).
• More tele-reach: Has a longer tele-lens for perspective compression and subject magnification.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• More heavily discounted: Has been available for much longer (launched in January 2011).

Advantages of the OM System Tough TG-7:

• More detail: Has more megapixels (12 vs 10.1MP), which boosts linear resolution by 9%.
• Better jpgs: Has a more modern image processing engine (TruePic VIII vs TruePic V).
• Better video: Provides higher definition movie capture (4K/30p vs 720/30p).
• More detailed LCD: Has a higher resolution rear screen (1040k vs 614k dots).
• Faster burst: Shoots at higher frequency (20 vs 2 flaps/sec) to capture the decisive moment.
• Wider view: Has a wider-angle lens that facilitates landscape or interior shots.
• 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.
• Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
• Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
• More modern: Reflects 12 years and 8 months of technical progress since the XZ-1 launch.

If the number of relative strengths (bullet points above) is taken as a guide, the TG-7 is the clear winner of the contest (13 : 5 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision 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 Olympus XZ-1 and the OM System TG-7 place the cameras among the top in their class? Find out in the latest Best Travel-Zoom Camera listing 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 incomplete and does no justice, for example, to the way the XZ-1 or the TG-7 perform in practice. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

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.		Olympus XZ-1	4/5	..	..	74/100	4.5/5	4.5/5	Jan 2011	US$ 499	ebay.com
2.		OM System TG-7	4/5	..	4.5/5	..	4/5	4/5	Sep 2023	US$ 549	amazon.com
3.		Olympus E-PL1	..	86/100	..	69/100	4/5	4.5/5	Feb 2010	US$ 599	ebay.com
4.		Olympus E-PL3	3/5	+ +	..	72/100	4.5/5	4/5	Jun 2011	US$ 599	ebay.com
5.		Olympus E-PM1	..	86/100	..	71/100	4.5/5	4.5/5	Jun 2011	US$ 499	ebay.com
6.		Olympus E-PM2	3/5	..	..	77/100	5/5	4.5/5	Sep 2012	US$ 499	ebay.com
7.		Olympus TG-4	..	+	..	79/100	4/5	4/5	Apr 2015	US$ 379	ebay.com
8.		Olympus TG-5	..	+ +	4.5/5	..	4/5	4/5	May 2017	US$ 449	ebay.com
9.		Olympus TG-6	4/5	+ +	4.5/5	76/100	4/5	4/5	May 2019	US$ 449	ebay.com
10.		Olympus XZ-2	4/5	+	..	..	4.5/5	4.5/5	Sep 2012	US$ 599	ebay.com
11.		Panasonic FZ150	3/5	+ +	..	76/100	4/5	4.5/5	Aug 2011	US$ 499	ebay.com
12.		Panasonic FZ200	3/5	+ +	..	80/100	4.5/5	4.5/5	Jul 2012	US$ 599	ebay.com
13.		Panasonic FZ300	..	+ +	..	..	4.5/5	4.5/5	Jul 2015	US$ 599	amazon.com
14.		Panasonic LX5	4/5	+	..	73/100	4.5/5	4.5/5	Jul 2010	US$ 499	ebay.com
15.		Panasonic LX7	3/5	+ +	..	75/100	4/5	4.5/5	Jul 2012	US$ 499	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. 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. 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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