Nikon W150 vs Olympus E-PM2

The Nikon Coolpix W150 and the Olympus PEN E-PM2 are two digital cameras that were announced, respectively, in April 2019 and September 2012. The W150 is a fixed lens compact, while the E-PM2 is a mirrorless interchangeable lens camera. The cameras are based on a 1/3.1-inch (W150) and a Four Thirds (E-PM2) sensor. The Nikon has a resolution of 13 megapixels, whereas the Olympus provides 15.9 MP.

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

Headline Specifications

Nikon W150		Olympus E-PM2
Fixed lens compact camera		Mirrorless system camera
30-90mm f/3.3-5.9		Micro Four Thirds lenses
13 MP – 1/3.1" sensor		15.9 MP – Four Thirds sensor
1080/30p Video		1080/30p Video
ISO 125-1,600		ISO 100-25,600
No viewfinder, LCD framing		Viewfinder optional
2.7" LCD – 230k dots		3.0" LCD – 460k dots
Fixed screen (not touch-sensitive)		Fixed touchscreen
4.7 shutter flaps per second		8 shutter flaps per second
no shake reduction		In-body stabilization
Waterproof body (10m)		not weather sealed
220 shots per battery charge		360 shots per battery charge
110 x 67 x 38 mm, 177 g		110 x 64 x 34 mm, 269 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon Coolpix W150 and the Olympus PEN E-PM2? 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 Nikon W150 and the Olympus E-PM2 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter.

The W150 can be obtained in five different colors (blue, orange, white, flower, resort), while the E-PM2 is available in four color-versions (black, silver, red, white).

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-PM2 is somewhat smaller (4 percent) than the Nikon W150. It is worth mentioning in this context that the W150 is splash and dust resistant, while the E-PM2 does not feature any corresponding weather-sealing. More than that, the W150 is water-proof up to 10m and can, thus, be used for underwater photography.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the W150 has a lens built in, whereas the E-PM2 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-PM2 and their specifications in the Micro Four Thirds Lens Catalog.

The power pack in the W150 can be charged via the USB port, so that it is not always necessary to take the battery charger along 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 (USD)	Street Price
1.		Nikon W150	110 mm	67 mm	38 mm	177 g	220	Y	Apr 2019	159	ebay.com
2.		Olympus E-PM2	110 mm	64 mm	34 mm	269 g	360	n	Sep 2012	499	ebay.com
3.		Leica Q2	130 mm	80 mm	92 mm	718 g	370	Y	Mar 2019	4,995	amazon.com
4.		Nikon B600	122 mm	82 mm	99 mm	500 g	280	n	Jan 2019	349	ebay.com
5.		Nikon A1000	114 mm	72 mm	41 mm	330 g	250	n	Jan 2019	429	ebay.com
6.		Nikon P1000	146 mm	119 mm	181 mm	1415 g	250	n	Jul 2018	999	amazon.com
7.		Nikon W300	112 mm	66 mm	29 mm	231 g	280	Y	May 2017	389	ebay.com
8.		Olympus E-M10 II	120 mm	83 mm	47 mm	390 g	320	n	Aug 2015	649	ebay.com
9.		Olympus E-P5	122 mm	69 mm	37 mm	420 g	330	n	May 2013	999	ebay.com
10.		Olympus E-PL6	111 mm	64 mm	38 mm	325 g	360	n	May 2013	599	ebay.com
11.		Olympus E-PL5	111 mm	64 mm	38 mm	325 g	360	n	Sep 2012	599	ebay.com
12.		Olympus E-PM1	110 mm	64 mm	34 mm	265 g	330	n	Jun 2011	499	ebay.com
13.		Panasonic TS7	117 mm	76 mm	37 mm	319 g	300	Y	May 2018	449	ebay.com
14.		Ricoh WG-6	118 mm	66 mm	33 mm	246 g	340	Y	Feb 2019	399	amazon.com
15.		Ricoh WG-60	123 mm	62 mm	30 mm	193 g	300	Y	Oct 2018	279	ebay.com
16.		Sony RX0 II	59 mm	41 mm	35 mm	132 g	240	Y	Mar 2019	699	amazon.com
17.		Sony RX0	59 mm	41 mm	30 mm	110 g	240	Y	Aug 2017	699	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 naturally be influenced heavily by the price. 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 W150 was launched at a lower price than the E-PM2, 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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Nikon W150 features a 1/3.1-inch sensor and the Olympus E-PM2 a Four Thirds sensor. The sensor area in the E-PM2 is 1306 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 7.4 and 2.0. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

With 15.9MP, the E-PM2 offers a higher resolution than the W150 (13MP), but the E-PM2 nevertheless has larger individual pixels (pixel pitch of 3.76μm versus 1.11μm for the W150) due to its larger sensor. However, the W150 is a much more recent model (by 6 years and 7 months) than the E-PM2, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the W150 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Olympus E-PM2 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the E-PM2 for good quality output (200 dots per inch) amounts to 23 x 17.3 inches or 58.5 x 43.9 cm, for very good quality (250 dpi) 18.4 x 13.8 inches or 46.8 x 35.1 cm, and for excellent quality (300 dpi) 15.4 x 11.5 inches or 39 x 29.3 cm. The corresponding values for the Nikon W150 are 20.8 x 15.6 inches or 52.8 x 39.6 cm for good quality, 16.6 x 12.5 inches or 42.3 x 31.7 cm for very good quality, and 13.9 x 10.4 inches or 35.2 x 26.4 cm for excellent quality prints.

The Nikon Coolpix W150 has a native sensitivity range from ISO 125 to ISO 1600. The corresponding ISO settings for the Olympus PEN E-PM2 are ISO 100 to ISO 25600 (no boost).

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. 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 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 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.		Nikon W150	1/3.1	13.0	4160	3120	1080/30p	22.1	13.8	4058	65
2.		Olympus E-PM2	Four Thirds	15.9	4608	3456	1080/30p	22.7	12.2	932	72
3.		Leica Q2	Full Frame	46.7	8368	5584	4K/30p	26.4	13.5	2491	96
4.		Nikon B600	1/2.3	15.9	4608	3456	1080/30p	20.7	12.2	1095	52
5.		Nikon A1000	1/2.3	15.9	4608	3456	4K/30p	20.7	12.2	1095	52
6.		Nikon P1000	1/2.3	15.9	4608	3456	4K/30p	20.6	12.1	1044	51
7.		Nikon W300	1/2.3	15.9	4608	3456	4K/30p	20.5	12.0	938	50
8.		Olympus E-M10 II	Four Thirds	15.9	4608	3456	1080/60p	23.1	12.5	842	73
9.		Olympus E-P5	Four Thirds	15.9	4608	3456	1080/30p	22.8	12.4	895	72
10.		Olympus E-PL6	Four Thirds	15.9	4608	3456	1080/30p	22.5	12.0	717	68
11.		Olympus E-PL5	Four Thirds	15.9	4608	3456	1080/30p	22.8	12.3	889	72
12.		Olympus E-PM1	Four Thirds	12.2	4032	3024	1080/60i	21.0	10.3	499	52
13.		Panasonic TS7	1/2.3	20.2	5184	3888	4K/30p	20.6	12.1	1028	51
14.		Ricoh WG-6	1/2.3	20.2	5184	3888	4K/30p	20.7	12.2	1104	52
15.		Ricoh WG-60	1/2.3	15.9	4608	3456	1080/60p	20.6	12.2	1072	51
16.		Sony RX0 II	1-inch	15.4	4800	3200	4K/30p	22.1	12.4	555	65
17.		Sony RX0	1-inch	15.4	4800	3200	1080/60p	22.4	12.4	548	68
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, and both provide the same movie specifications (1080/30p).

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The W150 and the E-PM2 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 E-PM2 can be equipped with an optional viewfinder – the VF-4. The adjacent table lists some of the other core features of the Nikon W150 and Olympus E-PM2 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.		Nikon W150	none	n	2.7 / 230	fixed	n	1/2000s	4.7/s	Y	n
2.		Olympus E-PM2	optional	n	3.0 / 460	fixed	Y	1/4000s	8.0/s	n	Y
3.		Leica Q2	3680	n	3.0 / 1040	fixed	Y	1/2000s	10.0/s	n	Y
4.		Nikon B600	none	n	3.0 / 921	fixed	n	1/4000s	7.4/s	Y	Y
5.		Nikon A1000	1166	n	3.0 / 1036	tilting	Y	1/4000s	7.0/s	Y	Y
6.		Nikon P1000	2359	n	3.2 / 921	swivel	n	1/4000s	7.0/s	Y	Y
7.		Nikon W300	none	n	3.0 / 921	fixed	n	1/4000s	7.0/s	Y	Y
8.		Olympus E-M10 II	2360	n	3.0 / 1040	tilting	Y	1/4000s	8.0/s	Y	Y
9.		Olympus E-P5	optional	n	3.0 / 1037	tilting	Y	1/8000s	9.0/s	Y	Y
10.		Olympus E-PL6	optional	n	3.0 / 460	tilting	Y	1/4000s	8.0/s	n	Y
11.		Olympus E-PL5	optional	n	3.0 / 460	tilting	Y	1/4000s	8.0/s	n	Y
12.		Olympus E-PM1	optional	n	3.0 / 460	fixed	n	1/4000s	5.5/s	n	Y
13.		Panasonic TS7	1170	n	3.0 / 1040	fixed	n	1/1300s	10.0/s	Y	Y
14.		Ricoh WG-6	none	n	3.0 / 1040	fixed	n	1/4000s	1.0/s	Y	n
15.		Ricoh WG-60	none	n	2.7 / 230	fixed	n	1/4000s	8.0/s	Y	n
16.		Sony RX0 II	none	n	1.5 / 230	tilting	n	..	5.5/s	n	n
17.		Sony RX0	none	n	1.5 / 230	fixed	n	..	5.5/s	n	n
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 W150 has one, while the E-PM2 does not. While the built-in flash of the W150 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, the W150 is one of those camera that have an additional 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).

Concerning the storage of imaging data, both the W150 and the E-PM2 write their files to SDXC cards. The E-PM2 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the W150 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 Nikon Coolpix W150 and Olympus PEN E-PM2 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.		Nikon W150	-	stereo / mono	-	-	micro	2.0	Y	-	Y
2.		Olympus E-PM2	Y	stereo / mono	-	-	mini	2.0	-	-	-
3.		Leica Q2	Y	stereo / mono	-	-	-	-	Y	-	Y
4.		Nikon B600	-	stereo / mono	-	-	micro	2.0	Y	-	Y
5.		Nikon A1000	-	stereo / mono	-	-	micro	2.0	Y	-	Y
6.		Nikon P1000	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
7.		Nikon W300	-	stereo / mono	-	-	micro	2.0	Y	-	Y
8.		Olympus E-M10 II	Y	stereo / mono	-	-	micro	2.0	Y	-	-
9.		Olympus E-P5	Y	stereo / mono	-	-	micro	2.0	Y	-	-
10.		Olympus E-PL6	Y	stereo / mono	-	-	mini	2.0	-	-	-
11.		Olympus E-PL5	Y	stereo / mono	-	-	mini	2.0	-	-	-
12.		Olympus E-PM1	Y	stereo / mono	-	-	mini	2.0	-	-	-
13.		Panasonic TS7	-	stereo / mono	-	-	micro	2.0	Y	-	-
14.		Ricoh WG-6	-	mono / mono	-	-	micro	3.0	-	-	-
15.		Ricoh WG-60	-	mono / mono	-	-	micro	2.0	-	-	-
16.		Sony RX0 II	-	stereo / mono	Y	-	micro	2.0	Y	-	Y
17.		Sony RX0	-	stereo / mono	Y	-	micro	2.0	Y	-	Y

It is notable that the W150 offers wifi support, while the E-PM2 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Both the W150 and the E-PM2 have been discontinued, but can regularly be found used on ebay. Neither of the two has a direct successor, so they represent the end of the respective camera lines from Nikon and Olympus. Further information on the features and operation of the W150 and E-PM2 can be found, respectively, in the Nikon W150 Manual (free pdf) or the online Olympus E-PM2 Manual.

Review summary

So what is the bottom line? Which of the two cameras – the Nikon W150 or the Olympus E-PM2 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

Arguments in favor of the Nikon Coolpix W150:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Less disturbing: Has an electronic shutter option for completely silent shooting.
• Ready to shoot: Has a lens built-in, whereas the E-PM2 requires a separate lens.
• Less heavy: Is lighter even though it comes with a built-in lens (unlike the E-PM2).
• Easier travel charging: Can be conveniently charged via its USB port.
• Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
• Water-proof: Is rugged and sealed and can thus be used for underwater photography (up to 10m).
• Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
• Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
• Easier wireless transfer: Supports Bluetooth for image sharing without cables.
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More modern: Reflects 6 years and 7 months of technical progress since the E-PM2 launch.

Advantages of the Olympus PEN E-PM2:

• More detail: Has more megapixels (15.9 vs 13MP), which boosts linear resolution by 11%.
• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• 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 framing options: Can be equipped with a hotshoe-mounted accessory-viewfinder.
• Larger screen: Has a bigger rear LCD (3.0" vs 2.7") for image review and settings control.
• More detailed LCD: Has a higher resolution rear screen (460k vs 230k dots).
• Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
• Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
• Faster burst: Shoots at higher frequency (8 vs 4.7 flaps/sec) to capture the decisive moment.
• More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
• Longer lasting: Gets more shots (360 versus 220) out of a single battery charge.
• Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
• More heavily discounted: Has been around for much longer (launched in September 2012).

If the number of relative strengths (bullet points above) is taken as a guide, the E-PM2 is the clear winner of the contest (18 : 12 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 wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports 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 Nikon W150 and the Olympus E-PM2 place the cameras among the top in their class? Find out in the latest Best Travel-Zoom Camera and Best Mirrorless Interchangeable Lens 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 W150 or the E-PM2 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 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.		Nikon W150	..	+	..	..	3.5/5	3/5	Apr 2019	159	ebay.com
2.		Olympus E-PM2	3/5	..	..	77/100	5/5	4.5/5	Sep 2012	499	ebay.com
3.		Leica Q2	..	..	4.5/5	84/100	4.5/5	4/5	Mar 2019	4,995	amazon.com
4.		Nikon B600	..	+	..	..	3.5/5	3/5	Jan 2019	349	ebay.com
5.		Nikon A1000	..	+ +	3.5/5	..	3.5/5	3/5	Jan 2019	429	ebay.com
6.		Nikon P1000	..	+	3.5/5	73/100	3.5/5	3.5/5	Jul 2018	999	amazon.com
7.		Nikon W300	..	+	..	..	4/5	4/5	May 2017	389	ebay.com
8.		Olympus E-M10 II	4.5/5	+ +	..	80/100	5/5	5/5	Aug 2015	649	ebay.com
9.		Olympus E-P5	5/5	+ +	..	78/100	4.5/5	5/5	May 2013	999	ebay.com
10.		Olympus E-PL6	..	..	..	..	..	..	May 2013	599	ebay.com
11.		Olympus E-PL5	3/5	+ +	..	..	4.5/5	4.5/5	Sep 2012	599	ebay.com
12.		Olympus E-PM1	..	86/100	..	71/100	4.5/5	4.5/5	Jun 2011	499	ebay.com
13.		Panasonic TS7	..	+	..	..	..	3.5/5	May 2018	449	ebay.com
14.		Ricoh WG-6	..	..	..	..	3.5/5	3.5/5	Feb 2019	399	amazon.com
15.		Ricoh WG-60	..	..	..	..	..	..	Oct 2018	279	ebay.com
16.		Sony RX0 II	..	..	..	..	3.5/5	4/5	Mar 2019	699	amazon.com
17.		Sony RX0	..	..	..	..	3.5/5	4/5	Aug 2017	699	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparisons of ratings among very different cameras or across long time periods 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

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