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Olympus E-P1 vs Panasonic GX8

The Olympus PEN E-P1 and the Panasonic Lumix DMC-GX8 are two enthusiast cameras that were revealed to the public, respectively, in June 2009 and July 2015. Both the E-P1 and the GX8 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. The Olympus has a resolution of 12.2 megapixels, whereas the Panasonic provides 20.2 MP.

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

Headline Specifications
Olympus E-P1
versus
Panasonic GX8
Olympus E-P1   Panasonic GX8
Mirrorless system camera Mirrorless system camera
Micro Four Thirds lenses Micro Four Thirds lenses
12.2 MP – Four Thirds sensor 20.2 MP – Four Thirds sensor
720/30p Video 4K/30p Video
ISO 100-6,400 ISO 200-25,600
No viewfinder, LCD framing Electronic viewfinder (2360k dots)
3.0" LCD – 230k dots 3.0" LCD – 1040k dots
Fixed screen (not touch-sensitive) Swivel touchscreen
3 shutter flaps per second 10 shutter flaps per second
In-body stabilizationIn-body stabilization
not weather sealedWeathersealed body
300 shots per battery charge330 shots per battery charge
121 x 70 x 36 mm, 355 g 133 x 78 x 63 mm, 487 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus PEN E-P1 and the Panasonic Lumix DMC-GX8? 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.

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Body comparison

An illustration of the physical size and weight of the Olympus E-P1 and the Panasonic GX8 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 size dimensions are rounded to the nearest millimeter.

The E-P1 can be obtained in three different colors (black, silver, white), while the GX8 is available in two color-versions (black, silver).

Size Olympus E-P1 vs Panasonic GX8
Compare E-P1 versus GX8 top
Comparison E-P1 or GX8 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GX8 is notably larger (22 percent) than the Olympus E-P1. Moreover, the GX8 is substantially heavier (37 percent) than the E-P1. It is noteworthy in this context that the GX8 is splash and dust-proof, while the E-P1 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. 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 E-P1 gets 300 shots out of its Olympus BLS-1 battery, while the GX8 can take 330 images on a single charge of its Panasonic DMW-BLC12 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-P1 121 mm 70 mm 36 mm 355 g 300 n Jun 2009 799ebay.com
2.
 
Panasonic GX8 133 mm 78 mm 63 mm 487 g 330 Y Jul 2015 1,199ebay.com
3.
 
Olympus E-520 136 mm 92 mm 68 mm 535 g 750 n May 2008 699ebay.com
4.
 
Olympus E-620 130 mm 94 mm 60 mm 521 g 500 n Feb 2009 699ebay.com
5.
 
Olympus E-M1 130 mm 94 mm 63 mm 497 g 350 Y Sep 2013 1,399ebay.com
6.
 
Olympus E-M5 II 124 mm 85 mm 45 mm 469 g 310 Y Feb 2015 1,099ebay.com
7.
 
Olympus E-P2 121 mm 70 mm 36 mm 355 g 300 n Nov 2009 799ebay.com
8.
 
Olympus E-P3 122 mm 69 mm 34 mm 369 g 330 n Jun 2011 799ebay.com
9.
 
Olympus E-PL1 115 mm 72 mm 42 mm 334 g 290 n Feb 2010 599ebay.com
10.
 
Olympus E-PL2 114 mm 72 mm 42 mm 362 g 280 n Jan 2011 599ebay.com
11.
 
Olympus E-PL3 110 mm 64 mm 37 mm 313 g 300 n Jun 2011 599ebay.com
12.
 
Panasonic G10 124 mm 84 mm 74 mm 388 g 380 n Mar 2010 499ebay.com
13.
 
Panasonic G95 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999ebay.com
14.
 
Panasonic GF1 119 mm 71 mm 36 mm 385 g 380 n Sep 2009 749ebay.com
15.
 
Panasonic GH1 124 mm 90 mm 45 mm 385 g 300 n Mar 2009 899ebay.com
16.
 
Panasonic GX7 123 mm 71 mm 55 mm 402 g 350 n Aug 2013 999ebay.com
17.
 
Panasonic GX9 124 mm 72 mm 47 mm 407 g 260 n Feb 2018 849ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

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 E-P1 was launched at a markedly lower price (by 33 percent) than the GX8, 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. 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.

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.

Olympus E-P1 and Panasonic GX8 sensor measures

While the two cameras under review share the same sensor size, the GX8 offers a higher resolution of 20.2 megapixels, compared with 12.2 MP of the E-P1. This megapixels advantage translates into a 29 percent gain in linear resolution. On the other hand, these sensor specs imply that the GX8 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.34μm versus 4.29μm for the E-P1). However, it should be noted that the GX8 is much more recent (by 6 years and 1 month) than the E-P1, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size.

The resolution advantage of the Panasonic GX8 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GX8 for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 cm. The corresponding values for the Olympus E-P1 are 20.2 x 15.1 inches or 51.2 x 38.4 cm for good quality, 16.1 x 12.1 inches or 41 x 30.7 cm for very good quality, and 13.4 x 10.1 inches or 34.1 x 25.6 cm for excellent quality prints.

The Olympus PEN E-P1 has a native sensitivity range from ISO 100 to ISO 6400. The corresponding ISO settings for the Panasonic Lumix DMC-GX8 are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.

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.

E-P1 versus GX8 MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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 consideration, the GX8 offers substantially better image quality than the E-P1 (overall score 20 points higher). The advantage is based on 2.1 bits higher color depth, 2.2 EV in additional dynamic range, and 0.6 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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Sensor Characteristics
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Olympus E-P1 Four Thirds 12.2 4032 3024720/30p21.410.453655
2.
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675
3.
 
Olympus E-520 Four Thirds 10.0 3648 2736none21.410.454855
4.
 
Olympus E-620 Four Thirds 12.2 4032 3024none21.310.353655
5.
 
Olympus E-M1 Four Thirds 15.9 4608 34561080/30p23.012.775773
6.
 
Olympus E-M5 II Four Thirds 15.9 4608 34561080/60p23.012.584273
7.
 
Olympus E-P2 Four Thirds 12.2 4032 3024720/30p21.510.450556
8.
 
Olympus E-P3 Four Thirds 12.2 4032 30241080/60i20.810.153651
9.
 
Olympus E-PL1 Four Thirds 12.2 4032 3024720/30p21.510.148754
10.
 
Olympus E-PL2 Four Thirds 12.2 4032 3024720/30p21.410.257355
11.
 
Olympus E-PL3 Four Thirds 12.2 4032 30241080/60i20.910.349952
12.
 
Panasonic G10 Four Thirds 12.0 4000 3000720/30p21.210.141152
13.
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p23.213.0127375
14.
 
Panasonic GF1 Four Thirds 12.0 4000 3000720/30p21.210.351354
15.
 
Panasonic GH1 Four Thirds 12.0 4000 30001080/24p21.611.677264
16.
 
Panasonic GX7 Four Thirds 15.8 4592 34481080/60p22.612.271870
17.
 
Panasonic GX9 Four Thirds 20.2 5184 38884K/30p23.112.8116374
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. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the GX8 provides a better video resolution than the E-P1. It can shoot movie footage at 4K/30p, while the Olympus is limited to 720/30p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the GX8 has an electronic viewfinder (2360k dots), which can be very helpful when shooting in bright sunlight. In contrast, the E-P1 relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the Olympus E-P1 and Panasonic GX8 along with similar information for a selection of comparators.

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Core Features
  empty 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-P1none n3.0 / 230 fixed n 1/4000s 3.0/s n Y
2.
 
Panasonic GX82360 n3.0 / 1040 swivel Y 1/8000s 10.0/s n Y
3.
 
Olympus E-520optical n2.7 / 215 fixed n 1/4000s 3.5/s Y Y
4.
 
Olympus E-620optical n2.7 / 230 swivel n 1/4000s 4.0/s Y Y
5.
 
Olympus E-M12360 n3.0 / 1037 tilting Y 1/8000s 10.0/s n Y
6.
 
Olympus E-M5 II2360 n3.0 / 1037 swivel Y 1/8000s 10.0/s n Y
7.
 
Olympus E-P2optional n3.0 / 230 fixed n 1/4000s 3.0/s n Y
8.
 
Olympus E-P3optional n3.0 / 614 fixed Y 1/4000s 3.0/s Y Y
9.
 
Olympus E-PL1optional n2.7 / 230 fixed n 1/2000s 3.0/s Y Y
10.
 
Olympus E-PL2optional n3.0 / 460 fixed n 1/4000s 3.0/s Y Y
11.
 
Olympus E-PL3optional n3.0 / 460 tilting n 1/4000s 5.5/s n Y
12.
 
Panasonic G10202 n3.0 / 460 fixed n 1/4000s 2.6/s Y n
13.
 
Panasonic G952360 n3.0 / 1240 swivel Y 1/4000s 9.0/s Y Y
14.
 
Panasonic GF1optional n3.0 / 460 fixed n 1/4000s 3.0/s Y n
15.
 
Panasonic GH11440 n3.0 / 460 swivel n 1/4000s 3.0/s Y n
16.
 
Panasonic GX72760 n3.0 / 1040 tilting Y 1/8000s 5.0/s Y Y
17.
 
Panasonic GX92760 n3.0 / 1240 tilting Y 1/4000s 9.0/s Y Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The GX8 has a touchscreen, while the E-P1 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The GX8 has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the E-P1 does not have a selfie-screen.

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 GX8 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).

The Panasonic GX8 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.

The E-P1 writes its imaging data to SDHC cards, while the GX8 uses SDXC cards. The GX8 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the E-P1 cannot take advantage of Ultra High Speed SD cards.

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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-P1 and Panasonic Lumix DMC-GX8 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Olympus E-P1Ystereo / ---mini2.0---
2.
 
Panasonic GX8Ystereo / monoY-micro2.0YY-
3.
 
Olympus E-520Y- / ----2.0---
4.
 
Olympus E-620Y- / ----2.0---
5.
 
Olympus E-M1Ystereo / monoY-micro2.0Y--
6.
 
Olympus E-M5 IIYstereo / monoY-micro2.0Y--
7.
 
Olympus E-P2Ystereo / ---mini2.0---
8.
 
Olympus E-P3Ystereo / ---mini2.0---
9.
 
Olympus E-PL1Ystereo / ---mini2.0---
10.
 
Olympus E-PL2Ystereo / ---mini2.0---
11.
 
Olympus E-PL3Ystereo / ---mini2.0---
12.
 
Panasonic G10Ymono / ---mini2.0---
13.
 
Panasonic G95Ystereo / monoYYmicro2.0Y-Y
14.
 
Panasonic GF1Ymono / mono--mini2.0---
15.
 
Panasonic GH1Ystereo / -Y-mini2.0---
16.
 
Panasonic GX7Ystereo / mono--mini2.0YY-
17.
 
Panasonic GX9Ystereo / mono--micro2.0Y-Y

It is notable that the GX8 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the E-P1 does not provide wifi capability.

Both the E-P1 and the GX8 have been discontinued, but can regularly be found used on ebay. The E-P1 was replaced by the Olympus E-P2, while the GX8 was followed by the Panasonic GX9. Further information on the features and operation of the E-P1 and GX8 can be found, respectively, in the Olympus E-P1 Manual (free pdf) or the online Panasonic GX8 Manual.

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Review summary

So what is the bottom line? Is the Olympus E-P1 better than the Panasonic GX8 or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Arguments in favor of the Olympus PEN E-P1:

  • More compact: Is smaller (121x70mm vs 133x78mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 132g or 27 percent) and hence easier to carry around.
  • More affordable: Was introduced into a lower priced category (33 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in June 2009).

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Advantages of the Panasonic Lumix DMC-GX8:

  • More detail: Has more megapixels (20.2 vs 12.2MP), which boosts linear resolution by 29%.
  • Better image quality: Scores substantially higher (20 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (2.1 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (2.2 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (0.6 stops ISO advantage).
  • Better video: Provides higher definition movie capture (4K/30p vs 720/30p).
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Easier framing: Has an electronic viewfinder for image composition and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • 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.
  • Faster burst: Shoots at higher frequency (10 vs 3 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More modern: Reflects 6 years and 1 month of technical progress since the E-P1 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the GX8 is the clear winner of the contest (21 : 4 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.

E-P1 04:21 GX8

How about other alternatives? Do the specifications of the Olympus E-P1 and the Panasonic GX8 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 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 E-P1 or the GX8 perform in practice. 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 hands-on reviews by experts are important. 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.

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Expert Camera Reviews
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-P1..+..66/1004/54.5/5 Jun 2009 799ebay.com
2.
 
Panasonic GX85/5+..82/1004.5/54.5/5 Jul 2015 1,199ebay.com
3.
 
Olympus E-520..87/100..+ +4.5/54.5/5 May 2008 699ebay.com
4.
 
Olympus E-6203/588/100..72/1004.5/55/5 Feb 2009 699ebay.com
5.
 
Olympus E-M15/5+ +..84/1004.5/54.5/5 Sep 2013 1,399ebay.com
6.
 
Olympus E-M5 II5/5+ +4.5/581/1005/55/5 Feb 2015 1,099ebay.com
7.
 
Olympus E-P23/5+..69/1004/54.5/5 Nov 2009 799ebay.com
8.
 
Olympus E-P3..83/100..74/1004.5/54.5/5 Jun 2011 799ebay.com
9.
 
Olympus E-PL1..86/100..69/1004/54.5/5 Feb 2010 599ebay.com
10.
 
Olympus E-PL23/583/100..71/1004.5/54.5/5 Jan 2011 599ebay.com
11.
 
Olympus E-PL33/5+ +..72/1004.5/54/5 Jun 2011 599ebay.com
12.
 
Panasonic G103/5....70/1004/54/5 Mar 2010 499ebay.com
13.
 
Panasonic G954.5/5+4.5/583/1004.5/54.5/5 Apr 2019 999ebay.com
14.
 
Panasonic GF1..85/100..69/1004.5/54.5/5 Sep 2009 749ebay.com
15.
 
Panasonic GH1..+ +..72/1004.5/54.5/5 Mar 2009 899ebay.com
16.
 
Panasonic GX74/5+..79/1005/55/5 Aug 2013 999ebay.com
17.
 
Panasonic GX94/5+4/584/1004.5/54.5/5 Feb 2018 849ebay.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 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

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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Olympus E-P1 vs Panasonic GX8

    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.

    Camera Specifications
    Camera Model Olympus E-P1 Panasonic GX8
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Micro Four Thirds lenses Micro Four Thirds lenses
    Launch Date June 2009 July 2015
    Launch Price USD 799 USD 1,199
    Sensor Specs Olympus E-P1 Panasonic GX8
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor Four Thirds Sensor
    Sensor Size 17.3 x 13.0 mm 17.3 x 13.0 mm
    Sensor Area 224.9 mm2 224.9 mm2
    Sensor Diagonal 21.6 mm 21.6 mm
    Crop Factor 2.0x 2.0x
    Sensor Resolution 12.2 Megapixels 20.2 Megapixels
    Image Resolution 4032 x 3024 pixels 5184 x 3888 pixels
    Pixel Pitch 4.29 μm 3.34 μm
    Pixel Density 5.42 MP/cm2 8.96 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 720/30p Video 4K/30p Video
    ISO Setting 100 - 6,400 ISO 200 - 25,600 ISO
    ISO Boost no Enhancement 100 - 25,600 ISO
    Image Processor TruePic V Venus
    DXO Sensor Quality (score) 55 75
    DXO Color Depth (bits) 21.4 23.5
    DXO Dynamic Range (EV) 10.4 12.6
    DXO Low Light (ISO) 536 806
    Screen Specs Olympus E-P1 Panasonic GX8
    Viewfinder Type no viewfinder Electronic viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.77x
    Viewfinder Resolution 2360k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 230k dots 1040k dots
    LCD Attachment Fixed screen Swivel screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Olympus E-P1 Panasonic GX8
    Focus System Contrast-detect AF Contrast-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 3 shutter flaps/s 10 shutter flaps/s
    Electronic Shutterno E-Shutterup to 1/16000s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDHC cards SDXC cards
    Single or Dual Card Slots Single card slot Single card slot
    UHS card support no UHS-I
    Connectivity Specs Olympus E-P1 Panasonic GX8
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Body Specs Olympus E-P1 Panasonic GX8
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Olympus BLS-1 Panasonic DMW-BLC12
    Battery Life (CIPA)300 shots per charge330 shots per charge
    Body Dimensions 121 x 70 x 36 mm
    (4.8 x 2.8 x 1.4 in)
    133 x 78 x 63 mm
    (5.2 x 3.1 x 2.5 in)
    Camera Weight 355 g (12.5 oz) 487 g (17.2 oz)
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