Olympus E-P7 vs Panasonic TZ90

The Olympus PEN E-P7 and the Panasonic Lumix DC-TZ90 (labelled Panasonic ZS70 in some countries) are two digital cameras that were announced, respectively, in June 2021 and April 2017. The E-P7 is a mirrorless interchangeable lens camera, while the TZ90 is a fixed lens compact. The cameras are based on a Four Thirds (E-P7) and a 1/2.3-inch (TZ90) sensor. Both cameras offer a resolution of 20.2 megapixels.

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

Headline Specifications

Olympus E-P7		Panasonic TZ90
Mirrorless system camera		Fixed lens compact camera
Micro Four Thirds lenses		24-720mm f/3.3-6.4
20.2 MP – Four Thirds sensor		20.2 MP – 1/2.3" sensor
4K/30p Video		4K/30p Video
ISO 200-25,600		ISO 80-3,200 (80 - 6,400)
No viewfinder, LCD framing		Electronic viewfinder (1166k dots)
3.0" LCD – 1040k dots		3.0" LCD – 1040k dots
Tilting touchscreen		Tilting touchscreen
8.7 shutter flaps per second		10 shutter flaps per second
In-body stabilization		Lens-based stabilization
360 shots per battery charge		380 shots per battery charge
118 x 69 x 38 mm, 337 g		112 x 67 x 41 mm, 322 g

Check E-P7 price at
amazon.com
Check TZ90 offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus PEN E-P7 and the Panasonic Lumix DC-TZ90? 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 Olympus E-P7 and the Panasonic TZ90. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All size dimensions are rounded to the nearest millimeter.

The E-P7 can be obtained in three different colors (black, silver, white), while the TZ90 is available in two color-versions (black, silver).

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic TZ90 is notably smaller (8 percent) than the Olympus E-P7. In this context, it is worth noting that neither the E-P7 nor the TZ90 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the TZ90 has a lens built in, whereas the E-P7 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 E-P7 and their specifications in the Micro Four Thirds Lens Catalog.

Concerning battery life, the E-P7 gets 360 shots out of its Olympus BLS-50 battery, while the TZ90 can take 380 images on a single charge of its Panasonic DMW-BLG10 power pack. The power pack in the TZ90 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 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 E-P7	118 mm	69 mm	38 mm	337 g	360	n	Jun 2021	US$ 799	amazon.com
2.		Panasonic TZ90	112 mm	67 mm	41 mm	322 g	380	n	Apr 2017	US$ 449	ebay.com
3.		Canon SX730	110 mm	64 mm	40 mm	300 g	250	n	Apr 2017	US$ 399	ebay.com
4.		Fujifilm XF10	113 mm	64 mm	41 mm	279 g	330	n	Jul 2018	US$ 499	ebay.com
5.		Olympus E-M10	119 mm	82 mm	46 mm	396 g	320	n	Jan 2014	US$ 699	ebay.com
6.		Olympus E-M10 II	120 mm	83 mm	47 mm	390 g	320	n	Aug 2015	US$ 649	ebay.com
7.		Olympus E-M10 III	122 mm	84 mm	50 mm	410 g	330	n	Aug 2017	US$ 649	ebay.com
8.		Olympus E-M10 IV	122 mm	84 mm	49 mm	383 g	360	n	Aug 2020	US$ 699	amazon.com
9.		Olympus E-P1	121 mm	70 mm	36 mm	355 g	300	n	Jun 2009	US$ 799	ebay.com
10.		Olympus E-P2	121 mm	70 mm	36 mm	355 g	300	n	Nov 2009	US$ 799	ebay.com
11.		Olympus E-P3	122 mm	69 mm	34 mm	369 g	330	n	Jun 2011	US$ 799	ebay.com
12.		Olympus E-P5	122 mm	69 mm	37 mm	420 g	330	n	May 2013	US$ 999	ebay.com
13.		Olympus PEN-F	125 mm	72 mm	37 mm	427 g	330	n	Jan 2016	US$ 1 199	ebay.com
14.		Panasonic FT7	117 mm	76 mm	37 mm	319 g	300	Y	May 2018	US$ 449	ebay.com
15.		Panasonic GX9	124 mm	72 mm	47 mm	407 g	260	n	Feb 2018	US$ 849	ebay.com
16.		Panasonic LX5	110 mm	65 mm	43 mm	271 g	400	n	Jul 2010	US$ 499	ebay.com
17.		Panasonic TZ95	112 mm	69 mm	42 mm	327 g	380	n	Feb 2019	US$ 449	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 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 TZ90 was launched at a lower price than the E-P7, despite having a lens built in. 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. 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 Olympus E-P7 features a Four Thirds sensor and the Panasonic TZ90 a 1/2.3-inch sensor. The sensor area in the TZ90 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.

Even though the E-P7 has a larger sensor, both cameras offer the same resolution of 20.2 megapixels. This implies that the E-P7 has a lower pixel density and larger individual pixels (with a pixel pitch of 3.34μm versus 1.18μm for the TZ90), which gives it a potential advantage in terms of light gathering capacity. In addition, the E-P7 is much more recent (by 4 years and 1 month) than the TZ90, and its sensor will have benefitted from technological advances during this time. Coming back to sensor resolution, it should be mentioned that the TZ90 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The Olympus PEN E-P7 has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 100-25600. The corresponding ISO settings for the Panasonic Lumix DC-TZ90 are ISO 80 to ISO 3200, with the possibility to increase the ISO range to 80-6400.

In terms of underlying technology, the E-P7 is build around a CMOS sensor, while the TZ90 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 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 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 E-P7	Four Thirds	20.2	5184	3888	4K/30p	23.4	13.3	1494	77
2.		Panasonic TZ90	1/2.3	20.2	5184	3888	4K/30p	19.1	10.6	106	36
3.		Canon SX730	1/2.3	20.2	5184	3888	1080/60p	20.5	11.9	924	50
4.		Fujifilm XF10	APS-C	24.0	6000	4000	4K/15p	24.0	13.4	1844	83
5.		Olympus E-M10	Four Thirds	15.9	4608	3456	1080/30p	22.8	12.3	884	72
6.		Olympus E-M10 II	Four Thirds	15.9	4608	3456	1080/60p	23.1	12.5	842	73
7.		Olympus E-M10 III	Four Thirds	15.9	4608	3456	4K/30p	23.1	12.8	1120	74
8.		Olympus E-M10 IV	Four Thirds	20.2	5184	3888	4K/30p	23.3	13.2	1402	76
9.		Olympus E-P1	Four Thirds	12.2	4032	3024	720/30p	21.4	10.4	536	55
10.		Olympus E-P2	Four Thirds	12.2	4032	3024	720/30p	21.5	10.4	505	56
11.		Olympus E-P3	Four Thirds	12.2	4032	3024	1080/60i	20.8	10.1	536	51
12.		Olympus E-P5	Four Thirds	15.9	4608	3456	1080/30p	22.8	12.4	895	72
13.		Olympus PEN-F	Four Thirds	20.2	5184	3888	1080/60p	23.1	12.4	894	74
14.		Panasonic FT7	1/2.3	20.2	5184	3888	4K/30p	20.6	12.1	1028	51
15.		Panasonic GX9	Four Thirds	20.2	5184	3888	4K/30p	23.1	12.8	1163	74
16.		Panasonic LX5	1/1.7	10.0	3648	2736	720/60p	19.6	10.8	132	41
17.		Panasonic TZ95	1/2.3	20.2	5184	3888	4K/30p	20.7	12.2	1103	52
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 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. For example, the TZ90 has an electronic viewfinder (1166k dots), which can be very helpful when shooting in bright sunlight. In contrast, the E-P7 relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the Olympus E-P7 and Panasonic TZ90 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.		Olympus E-P7	none	n	3.0 / 1040	tilting	Y	1/4000s	8.7/s	Y	Y
2.		Panasonic TZ90	1166	n	3.0 / 1040	tilting	Y	1/2000s	10.0/s	Y	Y
3.		Canon SX730	none	n	3.0 / 922	tilting	n	1/3200s	5.9/s	Y	Y
4.		Fujifilm XF10	none	n	3.0 / 1040	fixed	Y	1/4000s	6.0/s	Y	n
5.		Olympus E-M10	1440	n	3.0 / 1037	tilting	Y	1/4000s	8.0/s	Y	Y
6.		Olympus E-M10 II	2360	n	3.0 / 1040	tilting	Y	1/4000s	8.0/s	Y	Y
7.		Olympus E-M10 III	2360	n	3.0 / 1040	tilting	Y	1/4000s	8.6/s	Y	Y
8.		Olympus E-M10 IV	2360	n	3.0 / 1040	tilting	Y	1/4000s	15.0/s	Y	Y
9.		Olympus E-P1	none	n	3.0 / 230	fixed	n	1/4000s	3.0/s	n	Y
10.		Olympus E-P2	optional	n	3.0 / 230	fixed	n	1/4000s	3.0/s	n	Y
11.		Olympus E-P3	optional	n	3.0 / 614	fixed	Y	1/4000s	3.0/s	Y	Y
12.		Olympus E-P5	optional	n	3.0 / 1037	tilting	Y	1/8000s	9.0/s	Y	Y
13.		Olympus PEN-F	2360	n	3.0 / 1037	swivel	Y	1/8000s	10.0/s	n	Y
14.		Panasonic FT7	1170	n	3.0 / 1040	fixed	n	1/1300s	10.0/s	Y	Y
15.		Panasonic GX9	2760	n	3.0 / 1240	tilting	Y	1/4000s	9.0/s	Y	Y
16.		Panasonic LX5	optional	n	3.0 / 460	fixed	n	1/4000s	2.5/s	Y	Y
17.		Panasonic TZ95	2330	n	3.0 / 1040	tilting	Y	1/2000s	10.0/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

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 Olympus E-P7 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.

Concerning the storage of imaging data, both the E-P7 and the TZ90 write their files to SDXC cards. The E-P7 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the TZ90 can use UHS-I cards (up to 104 MB/s).

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 PEN E-P7 and Panasonic Lumix DC-TZ90 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 E-P7	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
2.		Panasonic TZ90	-	stereo / mono	-	-	micro	2.0	Y	-	-
3.		Canon SX730	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
4.		Fujifilm XF10	-	stereo / mono	Y	-	micro	2.0	Y	-	Y
5.		Olympus E-M10	Y	stereo / mono	-	-	micro	2.0	Y	-	-
6.		Olympus E-M10 II	Y	stereo / mono	-	-	micro	2.0	Y	-	-
7.		Olympus E-M10 III	Y	stereo / mono	-	-	micro	2.0	Y	-	-
8.		Olympus E-M10 IV	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
9.		Olympus E-P1	Y	stereo / -	-	-	mini	2.0	-	-	-
10.		Olympus E-P2	Y	stereo / -	-	-	mini	2.0	-	-	-
11.		Olympus E-P3	Y	stereo / -	-	-	mini	2.0	-	-	-
12.		Olympus E-P5	Y	stereo / mono	-	-	micro	2.0	Y	-	-
13.		Olympus PEN-F	Y	stereo / mono	-	-	micro	2.0	Y	-	-
14.		Panasonic FT7	-	stereo / mono	-	-	micro	2.0	Y	-	-
15.		Panasonic GX9	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
16.		Panasonic LX5	Y	mono / mono	-	-	mini	2.0	-	-	-
17.		Panasonic TZ95	-	stereo / mono	-	-	micro	2.0	Y	-	Y

It is notable that the E-P7 has a hotshoe, while the TZ90 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

The E-P7 is a recent model that features in the current product line-up of Olympus. In contrast, the TZ90 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the TZ90 was succeeded by the Panasonic TZ95. Further information on the features and operation of the E-P7 and TZ90 can be found, respectively, in the Olympus E-P7 Manual (free pdf) or the online Panasonic TZ90 Manual.

Review summary

So how do things add up? Which of the two cameras – the Olympus E-P7 or the Panasonic TZ90 – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.

Arguments in favor of the Olympus PEN E-P7:

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Better image quality: Features a larger and more technologically advanced imaging sensor.
• Richer colors: The sensor size advantage translates into images with better, more accurate colors.
• More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
• Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
• Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
• 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.
• Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
• More modern: Reflects 4 years and 1 month of technical progress since the TZ90 launch.

Advantages of the Panasonic Lumix DC-TZ90:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Easier framing: Has an electronic viewfinder for image composition and settings control.
• Faster burst: Shoots at higher frequency (10 vs 8.7 flaps/sec) to capture the decisive moment.
• Ready to shoot: Has an integrated lens, whereas the E-P7 necessitates an extra lens.
• Less heavy: Has a lower weight even though it has a lens built in (unlike the E-P7).
• Easier travel charging: Can be conveniently charged via its USB port.
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More heavily discounted: Has been around for much longer (launched in April 2017).

If the count of individual advantages (bullet points above) is taken as a guide, the E-P7 is the clear winner of the match-up (12 : 8 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 E-P7 and the Panasonic TZ90 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best Superzoom 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the E-P7 or the TZ90. 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 where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular 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 E-P7	4/5	..	4.5/5	..	..	4.5/5	Jun 2021	US$ 799	amazon.com
2.		Panasonic TZ90	..	+ +	4/5	..	4/5	4/5	Apr 2017	US$ 449	ebay.com
3.		Canon SX730	..	+	..	..	4/5	4/5	Apr 2017	US$ 399	ebay.com
4.		Fujifilm XF10	..	..	4/5	75/100	4/5	4.5/5	Jul 2018	US$ 499	ebay.com
5.		Olympus E-M10	4/5	..	..	80/100	5/5	5/5	Jan 2014	US$ 699	ebay.com
6.		Olympus E-M10 II	4.5/5	+ +	..	80/100	5/5	5/5	Aug 2015	US$ 649	ebay.com
7.		Olympus E-M10 III	..	+	5/5	80/100	4.5/5	4.5/5	Aug 2017	US$ 649	ebay.com
8.		Olympus E-M10 IV	4.5/5	..	5/5	81/100	4.5/5	4.5/5	Aug 2020	US$ 699	amazon.com
9.		Olympus E-P1	..	+	..	66/100	4/5	4.5/5	Jun 2009	US$ 799	ebay.com
10.		Olympus E-P2	3/5	+	..	69/100	4/5	4.5/5	Nov 2009	US$ 799	ebay.com
11.		Olympus E-P3	..	83/100	..	74/100	4.5/5	4.5/5	Jun 2011	US$ 799	ebay.com
12.		Olympus E-P5	5/5	+ +	..	78/100	4.5/5	5/5	May 2013	US$ 999	ebay.com
13.		Olympus PEN-F	..	..	4/5	82/100	4.5/5	5/5	Jan 2016	US$ 1 199	ebay.com
14.		Panasonic FT7	..	+	..	..	3.5/5	3.5/5	May 2018	US$ 449	ebay.com
15.		Panasonic GX9	4/5	+	4/5	84/100	4.5/5	4.5/5	Feb 2018	US$ 849	ebay.com
16.		Panasonic LX5	4/5	+	..	73/100	4.5/5	4.5/5	Jul 2010	US$ 499	ebay.com
17.		Panasonic TZ95	..	+ +	..	..	4.5/5	..	Feb 2019	US$ 449	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated 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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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