Olympus PEN-F vs Panasonic GM5

The Olympus PEN-F and the Panasonic Lumix DMC-GM5 are two digital cameras that were officially introduced, respectively, in January 2016 and September 2014. Both the PEN-F and the GM5 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. The Olympus has a resolution of 20.2 megapixels, whereas the Panasonic provides 15.8 MP.

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

Headline Specifications

Olympus PEN-F		Panasonic GM5
Mirrorless system camera		Mirrorless system camera
Micro Four Thirds lenses		Micro Four Thirds lenses
20.2 MP, Four Thirds Sensor		15.8 MP, Four Thirds Sensor
1080/60p Video		1080/60p Video
ISO 80-25600		ISO 200-25600
Electronic viewfinder (2360k dots)		Electronic viewfinder (1166k dots)
3.0" LCD, 1037k dots		3.0" LCD, 921k dots
Swivel touchscreen		Fixed touchscreen
10 shutter flaps per second		5.8 shutter flaps per second
In-body stabilization		Lens stabilization only
330 shots per battery charge		220 shots per battery charge
125 x 72 x 37 mm, 427 g		99 x 60 x 36 mm, 211 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus PEN-F and the Panasonic Lumix DMC-GM5? 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 PEN-F and the Panasonic GM5 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 width, height and depth dimensions are rounded to the nearest millimeter.

Both cameras are available in two different colors (black, silver).

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GM5 is considerably smaller (34 percent) than the Olympus PEN-F. Moreover, the GM5 is substantially lighter (51 percent) than the PEN-F. In this context, it is worth noting that neither the PEN-F nor the GM5 are weather-sealed.

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. In this particular case, both cameras feature the same lens mount, so that they can use the same lenses. You can compare the optics available in the Micro Four Thirds Lens Catalog. Mirrorless cameras, such as the two under consideration, have the additional advantage of having a short flange to focal plane distance, which makes it possible to mount many lenses from other systems onto the camera via adapters.

Concerning battery life, the PEN-F gets 330 shots out of its BLN-1 battery, while the GM5 can take 220 images on a single charge of its DMW-BLH7 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.

Camera Body Specifications

	Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life (CIPA)	Weather Sealing (yes/no)	Camera Launch (announced)	Launch Price (USD)	Street Price (USD)	Used Price (USD)	Camera Model
	Olympus PEN-F»	4.9 in	2.8 in	1.5 in	15.1 oz	330	n	Jan 2016	1,199			Olympus PEN-F
	Panasonic GM5«	3.9 in	2.4 in	1.4 in	7.4 oz	220	n	Sep 2014	749	-		Panasonic GM5
	Olympus E-M10 III« »	4.8 in	3.3 in	2.0 in	14.5 oz	330	n	Aug 2017	649			Olympus E-M10 III
	Olympus E-PL8« »	4.5 in	2.6 in	1.5 in	12.6 oz	350	n	Sep 2016	549	-		Olympus E-PL8
	Olympus E-M5 II« »	4.9 in	3.3 in	1.8 in	16.5 oz	310	Y	Feb 2015	1,099			Olympus E-M5 II
	Olympus E-M10 II« »	4.7 in	3.3 in	1.9 in	13.8 oz	320	n	Aug 2015	649	-		Olympus E-M10 II
	Olympus E-PL7« »	4.5 in	2.6 in	1.5 in	12.6 oz	350	n	Aug 2014	599	-		Olympus E-PL7
	Olympus E-M1« »	5.1 in	3.7 in	2.5 in	17.5 oz	350	Y	Sep 2013	1,399	-		Olympus E-M1
	Olympus E-P5« »	4.8 in	2.7 in	1.5 in	14.8 oz	330	n	May 2013	999	-		Olympus E-P5
	Olympus E-M5« »	4.8 in	3.5 in	1.7 in	15.0 oz	360	Y	Feb 2012	1,299	-		Olympus E-M5
	Panasonic G7« »	4.9 in	3.4 in	3.0 in	14.5 oz	350	n	May 2015	649	-		Panasonic G7
	Panasonic GX8« »	5.2 in	3.1 in	2.5 in	17.2 oz	330	Y	Jul 2015	1,199	-		Panasonic GX8
	Panasonic G6« »	4.8 in	3.3 in	2.8 in	13.8 oz	340	n	Apr 2013	599	-		Panasonic G6
	Panasonic GM1« »	3.9 in	2.2 in	1.2 in	7.2 oz	230	n	Oct 2013	749	-		Panasonic GM1
	Panasonic GX7« »	4.8 in	2.8 in	2.2 in	14.2 oz	350	n	Aug 2013	999	-		Panasonic GX7
	Panasonic GX1« »	4.6 in	2.7 in	1.5 in	11.2 oz	320	n	Nov 2011	699	-		Panasonic GX1
	Panasonic GH2« »	4.9 in	3.5 in	3.0 in	15.6 oz	330	n	Sep 2010	899	-		Panasonic GH2
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Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The GM5 was launched at a markedly lower price (by 38 percent) than the PEN-F, which puts it into a different market segment. 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.

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.

While the two cameras under review share the same sensor size, the PEN-F offers a higher resolution of 20.2 megapixels, compared with 15.8 MP of the GM5. This megapixels advantage translates into a 13 percent gain in linear resolution. On the other hand, these sensor specs imply that the PEN-F has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.34μm versus 3.77μm for the GM5). In this context, it should be noted, however, that the PEN-F is a somewhat more recent model (by 1 year and 4 months) than the GM5, and its sensor might have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size. Coming back to sensor resolution, it should be mentioned that the PEN-F has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Olympus PEN-F implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the PEN-F for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inch or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inch or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inch or 43.9 x 32.9 cm. The corresponding values for the Panasonic GM5 are 23 x 17.2 inch or 58.3 x 43.8 cm for good quality, 18.4 x 13.8 inch or 46.7 x 35 cm for very good quality, and 15.3 x 11.5 inch or 38.9 x 29.2 cm for excellent quality prints.

Unlike the GM5, the PEN-F has the capacity to capture high quality composite images (40MP) by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).

The Olympus PEN-F has a native sensitivity range from ISO 80 to ISO 25600. The corresponding ISO settings for the Panasonic Lumix DMC-GM5 are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.

Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. Of the two cameras under review, the PEN-F has a notably higher overall DXO score than the GM5 (overall score 8 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 1 bits higher color depth, 0.7 EV in additional dynamic range, and 0.3 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.

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, and both provide the same movie specifications (1080/60p).

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the PEN-F offers a substantially higher resolution than the one in the GM5 (2360k vs 1166k dots). The adjacent table lists some of the other core features of the Olympus PEN-F and Panasonic GM5 along with similar information for a selection of comparators.

One feature that differentiates the PEN-F and the GM5 is in-body image stabilization (IBIS). The PEN-F reduces the risk of handshake-induced blur with all attached lenses, while the GM5 has to rely on optical image stabilization in OIS-equipped lenses to achieve the same effect.

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 PEN-F and the Panasonic GM5 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 PEN-F and the GM5 write their files to SDXC cards. The PEN-F supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the GM5 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-F and Panasonic Lumix DMC-GM5 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

The PEN-F is a recent model that features in the current product line-up of Olympus. In contrast, the GM5 has been discontinued (but it can be found pre-owned on eBay). There has not been a direct replacement model for the GM5 from Panasonic. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Olympus and Panasonic websites.

Review summary

So how do things add up? Which of the two cameras – the Olympus PEN-F or the Panasonic GM5 – 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 Olympus PEN-F:

• More detail: Offers more megapixels (20.2 vs 15.8MP) with a 13% higher linear resolution.
• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• High quality composites: Can combine several shots after pixel-shifting its sensor.
• Better image quality: Scores markedly higher (8 points) in the DXO overall assessment.
• More dynamic range: Captures a larger spectrum of light and dark details (0.7 EV of extra DR).
• More detailed viewfinder: Has higher resolution electronic viewfinder (2360k vs 1166k dots).
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.62x vs 0.46x).
• More detailed LCD: Has a higher resolution rear screen (1037k vs 921k 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 1/500s) to freeze action.
• Faster burst: Shoots at higher frequency (10 vs 5.8 flaps/sec) to capture the decisive moment.
• Longer lasting: Can take more shots (330 versus 220) on a single battery charge.
• Sharper images: Has hand-shake reducing image stabilization built-in.
• Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
• More modern: Is somewhat more recent (announced 1 year and 4 months after the GM5).

Advantages of the Panasonic Lumix DMC-GM5:

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• More compact: Is smaller (99x60mm vs 125x72mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight (by 216g or 51 percent) and is thus easier to take along.
• More affordable: Was introduced into a lower priced category (38 percent cheaper at launch).
• More heavily discounted: Has been on the market for longer (launched in September 2014).

If the number of relative strengths (bullet points above) is taken as a guide, the PEN-F is the clear winner of the match-up (16 : 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 PEN-F and the Panasonic GM5 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing whether the two cameras rank among the cream of the crop.

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the PEN-F or the GM5. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews

This is why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.

Review Scores

	Camera Model						Camera Launch (announced)	Launch Price (USD)	Street Price (USD)	Used Price (USD)	Camera Model
	Olympus PEN-F»	-	82/100	4.5/5	4.5/5	5/5	Jan 2016	1,199			Olympus PEN-F
	Panasonic GM5«	+	77/100	5/5	5/5	4.5/5	Sep 2014	749	-		Panasonic GM5
	Olympus E-M10 III« »	+	80/100	4.5/5	4/5	4.5/5	Aug 2017	649			Olympus E-M10 III
	Olympus E-PL8« »	-	-	4.5/5	-	4/5	Sep 2016	549	-		Olympus E-PL8
	Olympus E-M5 II« »	+ +	81/100	5/5	4.5/5	5/5	Feb 2015	1,099			Olympus E-M5 II
	Olympus E-M10 II« »	+ +	80/100	5/5	5/5	5/5	Aug 2015	649	-		Olympus E-M10 II
	Olympus E-PL7« »	+	-	5/5	4.5/5	4/5	Aug 2014	599	-		Olympus E-PL7
	Olympus E-M1« »	+ +	84/100	4.5/5	4.5/5	4.5/5	Sep 2013	1,399	-		Olympus E-M1
	Olympus E-P5« »	+ +	78/100	4.5/5	4.5/5	5/5	May 2013	999	-		Olympus E-P5
	Olympus E-M5« »	+ +	80/100	4.5/5	5/5	5/5	Feb 2012	1,299	-		Olympus E-M5
	Panasonic G7« »	+ +	80/100	5/5	4.5/5	4.5/5	May 2015	649	-		Panasonic G7
	Panasonic GX8« »	+	82/100	4.5/5	5/5	4.5/5	Jul 2015	1,199	-		Panasonic GX8
	Panasonic G6« »	+ +	-	5/5	-	4.5/5	Apr 2013	599	-		Panasonic G6
	Panasonic GM1« »	+	78/100	5/5	4.5/5	4.5/5	Oct 2013	749	-		Panasonic GM1
	Panasonic GX7« »	+	79/100	5/5	4.5/5	5/5	Aug 2013	999	-		Panasonic GX7
	Panasonic GX1« »	+	77/100	4.5/5	4.5/5	4.5/5	Nov 2011	699	-		Panasonic GX1
	Panasonic GH2« »	+ +	79/100	4.5/5	4.5/5	5/5	Sep 2010	899	-		Panasonic GH2
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

The review scores listed above should be treated with care, 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, please note that some of the review sites have changed their methodology and reporting over time.

Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

Specifications: Olympus PEN-F vs Panasonic GM5

Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

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