Olympus E-5 vs E-PM1

The Olympus E-5 and the Olympus PEN E-PM1 are two digital cameras that were officially introduced, respectively, in September 2010 and June 2011. The E-5 is a DSLR, while the E-PM1 is a mirrorless interchangeable lens camera. Both cameras are equipped with a Four Thirds sensor. Both cameras offer a resolution of 12.2 megapixels.

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

Headline Specifications

Olympus E-5		Olympus E-PM1
Digital single lens reflex		Mirrorless system camera
Four Thirds lenses		Micro Four Thirds lenses
12.2 MP – Four Thirds sensor		12.2 MP – Four Thirds sensor
720/30p Video		1080/60i Video
ISO 100-6,400		ISO 100-12,800
Optical viewfinder		Viewfinder optional
3.0" LCD – 920k dots		3.0" LCD – 460k dots
Swivel screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
5 shutter flaps per second		5.5 shutter flaps per second
In-body stabilization		In-body stabilization
Weathersealed body		not weather sealed
750 shots per battery charge		330 shots per battery charge
142 x 117 x 75 mm, 873 g		110 x 64 x 34 mm, 265 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus E-5 and the Olympus PEN E-PM1? 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

An illustration of the physical size and weight of the Olympus E-5 and the Olympus E-PM1 is provided 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 E-PM1 can be obtained in six different colors (black, silver, brown, pink, purple, white), while the E-5 is only available in black.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-PM1 is considerably smaller (58 percent) than the Olympus E-5. Moreover, the E-PM1 is substantially lighter (70 percent) than the E-5. It is worth mentioning in this context that the E-5 is splash and dust resistant, while the E-PM1 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. Both cameras have similarly sized sensors, but DSLRs have a larger flange-to-focal plane distance than mirrorless cameras, which imposes contraints on the optical engineering process and generally leads to bigger and heavier lenses. You can compare the optics available for the two cameras in the Four Thirds Lens Catalog (E-5) and the Micro Four Thirds Lens Catalog (E-PM1). Mirrorless cameras, such as the E-PM1, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.

Concerning battery life, the E-5 gets 750 shots out of its Olympus BLM-5 battery, while the E-PM1 can take 330 images on a single charge of its Olympus BLS-5 power pack.

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.		Olympus E-5	142 mm	117 mm	75 mm	873 g	750	Y	Sep 2010	US$ 1 699	ebay.com
2.		Olympus E-PM1	110 mm	64 mm	34 mm	265 g	330	n	Jun 2011	US$ 499	ebay.com
3.		Olympus E-1	141 mm	104 mm	81 mm	738 g	750	Y	Jun 2003	US$ 1 699	ebay.com
4.		Olympus E-3	142 mm	116 mm	75 mm	876 g	750	Y	Oct 2007	US$ 1 699	ebay.com
5.		Olympus E-30	142 mm	108 mm	75 mm	701 g	750	n	Nov 2008	US$ 1 299	ebay.com
6.		Olympus E-510	136 mm	92 mm	68 mm	538 g	750	n	Mar 2007	US$ 799	ebay.com
7.		Olympus E-520	136 mm	92 mm	68 mm	535 g	750	n	May 2008	US$ 699	ebay.com
8.		Olympus E-600	130 mm	94 mm	60 mm	535 g	500	n	Aug 2009	US$ 449	ebay.com
9.		Olympus E-620	130 mm	94 mm	60 mm	521 g	500	n	Feb 2009	US$ 699	ebay.com
10.		Olympus E-P1	121 mm	70 mm	36 mm	355 g	300	n	Jun 2009	US$ 799	ebay.com
11.		Olympus E-P2	121 mm	70 mm	36 mm	355 g	300	n	Nov 2009	US$ 799	ebay.com
12.		Olympus E-PL1	115 mm	72 mm	42 mm	334 g	290	n	Feb 2010	US$ 599	ebay.com
13.		Olympus E-PL2	114 mm	72 mm	42 mm	362 g	280	n	Jan 2011	US$ 599	ebay.com
14.		Olympus E-PL3	110 mm	64 mm	37 mm	313 g	300	n	Jun 2011	US$ 599	ebay.com
15.		Olympus E-PM2	110 mm	64 mm	34 mm	269 g	360	n	Sep 2012	US$ 499	ebay.com
16.		Panasonic G2	124 mm	84 mm	74 mm	428 g	360	n	Mar 2010	US$ 599	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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The E-PM1 was launched at a markedly lower price (by 71 percent) than the E-5, 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.

Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants 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. 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 Four Thirds sensor and have a format factor (sometimes also referred to as "crop factor") of 2.0. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

Technology-wise, the E-PM1 uses a more advanced image processing engine (TruePic VI) than the E-5 (TruePic V+), with benefits for noise reduction, color accuracy, and processing speed.

The two cameras under review do not only share the same sensor size, but also offer an identical resolution of 12.2 megapixels. This similarity in sensor specs implies that both the E-5 and the E-PM1 have the same pixel density, as well as the same pixel size. It should, however, be noted that the E-PM1 is a somewhat more recent model (by 9 months) than the E-5, and its sensor might have benefitted from technological advances during this time.

The Olympus E-5 has a native sensitivity range from ISO 100 to ISO 6400. The corresponding ISO settings for the Olympus PEN E-PM1 are ISO 100 to ISO 12800 (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.

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"). Of the two cameras under review, the E-5 has a notably higher overall DXO score than the E-PM1 (overall score 4 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.6 bits higher color depth, 0.2 EV in additional dynamic range, and 0.1 stops in additional low light sensitivity. 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-5	Four Thirds	12.2	4032	3024	720/30p	21.6	10.5	519	56
2.		Olympus E-PM1	Four Thirds	12.2	4032	3024	1080/60i	21.0	10.3	499	52
3.		Olympus E-1	Four Thirds	4.9	2560	1920	none	20.0	9.7	-145	44
4.		Olympus E-3	Four Thirds	10.0	3648	2736	none	21.6	10.5	571	56
5.		Olympus E-30	Four Thirds	12.2	4032	3024	none	21.3	10.4	530	55
6.		Olympus E-510	Four Thirds	10.0	3648	2736	none	21.2	10.0	442	52
7.		Olympus E-520	Four Thirds	10.0	3648	2736	none	21.4	10.4	548	55
8.		Olympus E-600	Four Thirds	12.2	4032	3024	none	21.5	10.3	541	55
9.		Olympus E-620	Four Thirds	12.2	4032	3024	none	21.3	10.3	536	55
10.		Olympus E-P1	Four Thirds	12.2	4032	3024	720/30p	21.4	10.4	536	55
11.		Olympus E-P2	Four Thirds	12.2	4032	3024	720/30p	21.5	10.4	505	56
12.		Olympus E-PL1	Four Thirds	12.2	4032	3024	720/30p	21.5	10.1	487	54
13.		Olympus E-PL2	Four Thirds	12.2	4032	3024	720/30p	21.4	10.2	573	55
14.		Olympus E-PL3	Four Thirds	12.2	4032	3024	1080/60i	20.9	10.3	499	52
15.		Olympus E-PM2	Four Thirds	15.9	4608	3456	1080/30p	22.7	12.2	932	72
16.		Panasonic G2	Four Thirds	12.0	4000	3000	720/30p	21.2	10.3	493	53
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 E-PM1 provides a better video resolution than the E-5. It can shoot movie footage at 1080/60i, while the E-5 is limited to 720/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the E-5 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the E-PM1 relies on live view and the rear LCD for framing. That said, the E-PM1 can be equipped with an optional viewfinder – the VF-2. The adjacent table lists some of the other core features of the Olympus E-5 and Olympus E-PM1 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-5	optical	Y	3.0 / 920	swivel	n	1/8000s	5.0/s	Y	Y
2.		Olympus E-PM1	optional	n	3.0 / 460	fixed	n	1/4000s	5.5/s	n	Y
3.		Olympus E-1	optical	Y	1.8 / 134	fixed	n	1/4000s	3.0/s	n	n
4.		Olympus E-3	optical	Y	2.5 / 230	swivel	n	1/8000s	5.0/s	Y	Y
5.		Olympus E-30	optical	Y	2.7 / 230	swivel	n	1/8000s	5.0/s	Y	Y
6.		Olympus E-510	optical	n	2.5 / 215	fixed	n	1/4000s	3.0/s	Y	Y
7.		Olympus E-520	optical	n	2.7 / 215	fixed	n	1/4000s	3.5/s	Y	Y
8.		Olympus E-600	optical	n	2.7 / 230	swivel	n	1/4000s	4.0/s	Y	Y
9.		Olympus E-620	optical	n	2.7 / 230	swivel	n	1/4000s	4.0/s	Y	Y
10.		Olympus E-P1	none	n	3.0 / 230	fixed	n	1/4000s	3.0/s	n	Y
11.		Olympus E-P2	optional	n	3.0 / 230	fixed	n	1/4000s	3.0/s	n	Y
12.		Olympus E-PL1	optional	n	2.7 / 230	fixed	n	1/2000s	3.0/s	Y	Y
13.		Olympus E-PL2	optional	n	3.0 / 460	fixed	n	1/4000s	3.0/s	Y	Y
14.		Olympus E-PL3	optional	n	3.0 / 460	tilting	n	1/4000s	5.5/s	n	Y
15.		Olympus E-PM2	optional	n	3.0 / 460	fixed	Y	1/4000s	8.0/s	n	Y
16.		Panasonic G2	1440	n	3.0 / 460	swivel	Y	1/4000s	2.6/s	Y	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 E-5 has one, while the E-PM1 does not. While the built-in flash of the E-5 is not very powerful, it can at times be useful as a fill-in light.

The E-5 writes its imaging data to Compact Flash or xD Picture cards, while the E-PM1 uses SDXC cards. The E-5 features dual card slots, which can be very useful in case a memory card fails. In contrast, the E-PM1 only has one slot.

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 E-5 and Olympus PEN E-PM1 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-5	Y	stereo / -	-	-	mini	2.0	-	-	-
2.		Olympus E-PM1	Y	stereo / mono	-	-	mini	2.0	-	-	-
3.		Olympus E-1	Y	- / -	-	-	-	2.0	-	-	-
4.		Olympus E-3	Y	- / -	-	-	-	2.0	-	-	-
5.		Olympus E-30	Y	- / -	-	-	-	2.0	-	-	-
6.		Olympus E-510	Y	- / -	-	-	-	2.0	-	-	-
7.		Olympus E-520	Y	- / -	-	-	-	2.0	-	-	-
8.		Olympus E-600	Y	- / -	-	-	-	2.0	-	-	-
9.		Olympus E-620	Y	- / -	-	-	-	2.0	-	-	-
10.		Olympus E-P1	Y	stereo / -	-	-	mini	2.0	-	-	-
11.		Olympus E-P2	Y	stereo / -	-	-	mini	2.0	-	-	-
12.		Olympus E-PL1	Y	stereo / -	-	-	mini	2.0	-	-	-
13.		Olympus E-PL2	Y	stereo / -	-	-	mini	2.0	-	-	-
14.		Olympus E-PL3	Y	stereo / -	-	-	mini	2.0	-	-	-
15.		Olympus E-PM2	Y	stereo / mono	-	-	mini	2.0	-	-	-
16.		Panasonic G2	Y	stereo / mono	-	-	mini	2.0	-	-	-

Studio photographers will appreciate that the Olympus E-5 (unlike the E-PM1) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the E-5 and the E-PM1 have been discontinued, but can regularly be found used on ebay. The E-PM1 was replaced by the Olympus E-PM2, while the E-5 does not have a direct successor. Further information on the features and operation of the E-5 and E-PM1 can be found, respectively, in the Olympus E-5 Manual (free pdf) or the online Olympus E-PM1 Manual.

Review summary

So what conclusions can be drawn? Is the Olympus E-5 better than the Olympus E-PM1 or vice versa? A synthesis of the relative strong points of each of the models is listed below.

Arguments in favor of the Olympus E-5:

• Better image quality: Scores markedly higher (4 points) in the DXO overall assessment.
• Easier framing: Has an optical viewfinder for image composition and settings control.
• Easier setting verification: Features an LCD display on top to control shooting parameters.
• More detailed LCD: Has a higher resolution rear screen (920k vs 460k dots).
• More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
• Longer lasting: Can take more shots (750 versus 330) on a single battery charge.
• Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
• Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
• Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
• Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
• More heavily discounted: Has been on the market for longer (launched in September 2010).

Advantages of the Olympus PEN E-PM1:

• Better jpgs: Has a more modern image processing engine (TruePic VI vs TruePic V+).
• Better video: Provides higher definition movie capture (1080/60i vs 720/30p).
• More compact: Is smaller (110x64mm vs 142x117mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight (by 608g or 70 percent) and is thus easier to take along.
• More legacy lens friendly: Can use many non-native lenses via adapters.
• More affordable: Was introduced into a lower priced category (71 percent cheaper at launch).
• More modern: Was introduced somewhat (9 months) more recently.

If the count of relative strengths (bullet points above) is taken as a measure, the E-5 is the clear winner of the match-up (13 : 7 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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-5 and the Olympus E-PM1 place the cameras among the top in their class? Find out in the latest Best DSLR 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the E-5 or the E-PM1. 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 E-5	4/5	..	..	75/100	4/5	4.5/5	Sep 2010	US$ 1 699	ebay.com
2.		Olympus E-PM1	..	86/100	..	71/100	4.5/5	4.5/5	Jun 2011	US$ 499	ebay.com
3.		Olympus E-1	..	..	..	+	o	..	Jun 2003	US$ 1 699	ebay.com
4.		Olympus E-3	..	88/100	..	+ +	o	4/5	Oct 2007	US$ 1 699	ebay.com
5.		Olympus E-30	..	..	..	71/100	4.5/5	4/5	Nov 2008	US$ 1 299	ebay.com
6.		Olympus E-510	..	89/100	..	+ +	3.5/5	4.5/5	Mar 2007	US$ 799	ebay.com
7.		Olympus E-520	..	87/100	..	+ +	4.5/5	4.5/5	May 2008	US$ 699	ebay.com
8.		Olympus E-600	..	..	..	..	..	4.5/5	Aug 2009	US$ 449	ebay.com
9.		Olympus E-620	3/5	88/100	..	72/100	4.5/5	5/5	Feb 2009	US$ 699	ebay.com
10.		Olympus E-P1	..	+	..	66/100	4/5	4.5/5	Jun 2009	US$ 799	ebay.com
11.		Olympus E-P2	3/5	+	..	69/100	4/5	4.5/5	Nov 2009	US$ 799	ebay.com
12.		Olympus E-PL1	..	86/100	..	69/100	4/5	4.5/5	Feb 2010	US$ 599	ebay.com
13.		Olympus E-PL2	3/5	83/100	..	71/100	4.5/5	4.5/5	Jan 2011	US$ 599	ebay.com
14.		Olympus E-PL3	3/5	+ +	..	72/100	4.5/5	4/5	Jun 2011	US$ 599	ebay.com
15.		Olympus E-PM2	3/5	..	..	77/100	5/5	4.5/5	Sep 2012	US$ 499	ebay.com
16.		Panasonic G2	..	..	..	72/100	4/5	4.5/5	Mar 2010	US$ 599	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. 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, please note that some of the review sites have changed their methodology and reporting over time.

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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 a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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