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Olympus E-520 vs Panasonic GX85

The Olympus E-520 and the Panasonic Lumix DMC-GX85 (labelled Panasonic GX80 in some countries) are two digital cameras that were revealed to the public, respectively, in May 2008 and April 2016. The E-520 is a DSLR, while the GX85 is a mirrorless interchangeable lens camera. Both cameras are equipped with a Four Thirds sensor. The Olympus has a resolution of 10 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 E-520
versus
Panasonic GX85
Olympus E-520   Panasonic GX85
Digital single lens reflex Mirrorless system camera
Four Thirds lenses Micro Four Thirds lenses
10 MP – Four Thirds sensor 15.8 MP – Four Thirds sensor
no Video 4K/30p Video
ISO 100-1,600 ISO 200-25,600
Optical viewfinder Electronic viewfinder (2765k dots)
2.7" LCD – 215k dots 3.0" LCD – 1040k dots
Fixed screen (not touch-sensitive) Tilting touchscreen
3.5 shutter flaps per second 8 shutter flaps per second
In-body stabilizationIn-body stabilization
750 shots per battery charge290 shots per battery charge
136 x 92 x 68 mm, 535 g 122 x 71 x 44 mm, 426 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus E-520 and the Panasonic Lumix DMC-GX85? 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

The physical size and weight of the Olympus E-520 and the Panasonic GX85 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.

The GX85 can be obtained in two different colors (black, silver), while the E-520 is only available in black.

Size Olympus E-520 vs Panasonic GX85
Compare E-520 versus GX85 top
Comparison E-520 or GX85 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GX85 is considerably smaller (31 percent) than the Olympus E-520. Moreover, the GX85 is markedly lighter (20 percent) than the E-520. In this context, it is worth noting that neither the E-520 nor the GX85 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. 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-520) and the Micro Four Thirds Lens Catalog (GX85). Mirrorless cameras, such as the GX85, 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-520 gets 750 shots out of its Olympus BLM-1 battery, while the GX85 can take 290 images on a single charge of its Panasonic DMW-BLG10 power pack. The power pack in the GX85 can be charged via the USB port, which can be very convenient when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

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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-520 136 mm 92 mm 68 mm 535 g 750 n May 2008 699ebay.com
2.
 
Panasonic GX85 122 mm 71 mm 44 mm 426 g 290 n Apr 2016 799 amazon.com
3.
 
Olympus E-30 142 mm 108 mm 75 mm 701 g 750 n Nov 2008 1,299ebay.com
4.
 
Olympus E-410 130 mm 91 mm 53 mm 435 g 500 n Mar 2007 699ebay.com
5.
 
Olympus E-420 130 mm 91 mm 53 mm 440 g 500 n Mar 2008 599ebay.com
6.
 
Olympus E-450 130 mm 91 mm 53 mm 440 g 500 n Mar 2009 499ebay.com
7.
 
Olympus E-510 136 mm 92 mm 68 mm 538 g 750 n Mar 2007 799ebay.com
8.
 
Olympus E-600 130 mm 94 mm 60 mm 535 g 500 n Aug 2009 449ebay.com
9.
 
Olympus E-620 130 mm 94 mm 60 mm 521 g 500 n Feb 2009 699ebay.com
10.
 
Olympus E-M10 II 120 mm 83 mm 47 mm 390 g 320 n Aug 2015 649ebay.com
11.
 
Olympus E-P1 121 mm 70 mm 36 mm 355 g 300 n Jun 2009 799ebay.com
12.
 
Olympus E-P2 121 mm 70 mm 36 mm 355 g 300 n Nov 2009 799ebay.com
13.
 
Panasonic G85 128 mm 89 mm 74 mm 505 g 330 Y Sep 2016 899ebay.com
14.
 
Panasonic GH2 124 mm 90 mm 76 mm 442 g 330 n Sep 2010 899ebay.com
15.
 
Panasonic GX7 123 mm 71 mm 55 mm 402 g 350 n Aug 2013 999ebay.com
16.
 
Panasonic GX9 124 mm 72 mm 47 mm 407 g 260 n Feb 2018 849ebay.com
17.
 
Panasonic L10 135 mm 96 mm 78 mm 556 g 450 n Aug 2007 599ebay.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-520 was launched at a somewhat lower price (by 13 percent) than the GX85, which makes it more attractive for photographers on a tight budget. 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 generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have 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-520 and Panasonic GX85 sensor measures

While the two cameras under review share the same sensor size, the GX85 offers a higher resolution of 15.8 megapixels, compared with 10 MP of the E-520. This megapixels advantage translates into a 26 percent gain in linear resolution. On the other hand, these sensor specs imply that the GX85 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.77μm versus 4.74μm for the E-520). However, it should be noted that the GX85 is much more recent (by 7 years and 10 months) than the E-520, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size. Coming back to sensor resolution, it should be mentioned that the GX85 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Panasonic GX85 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GX85 for good quality output (200 dots per inch) amounts to 23 x 17.2 inches or 58.3 x 43.8 cm, for very good quality (250 dpi) 18.4 x 13.8 inches or 46.7 x 35 cm, and for excellent quality (300 dpi) 15.3 x 11.5 inches or 38.9 x 29.2 cm. The corresponding values for the Olympus E-520 are 18.2 x 13.7 inches or 46.3 x 34.7 cm for good quality, 14.6 x 10.9 inches or 37.1 x 27.8 cm for very good quality, and 12.2 x 9.1 inches or 30.9 x 23.2 cm for excellent quality prints.

The Olympus E-520 has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Panasonic Lumix DMC-GX85 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-520 versus GX85 MP

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"). Of the two cameras under consideration, the GX85 offers substantially better image quality than the E-520 (overall score 16 points higher). The advantage is based on 1.5 bits higher color depth, 2.2 EV in additional dynamic range, and 0.3 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-520 Four Thirds 10.0 3648 2736none21.410.454855
2.
 
Panasonic GX85 Four Thirds 15.8 4592 34484K/30p22.912.666271
3.
 
Olympus E-30 Four Thirds 12.2 4032 3024none21.310.453055
4.
 
Olympus E-410 Four Thirds 10.0 3648 2736none21.110.049451
5.
 
Olympus E-420 Four Thirds 10.0 3648 2736none21.510.452756
6.
 
Olympus E-450 Four Thirds 10.0 3648 2736none21.510.551256
7.
 
Olympus E-510 Four Thirds 10.0 3648 2736none21.210.044252
8.
 
Olympus E-600 Four Thirds 12.2 4032 3024none21.510.354155
9.
 
Olympus E-620 Four Thirds 12.2 4032 3024none21.310.353655
10.
 
Olympus E-M10 II Four Thirds 15.9 4608 34561080/60p23.112.584273
11.
 
Olympus E-P1 Four Thirds 12.2 4032 3024720/30p21.410.453655
12.
 
Olympus E-P2 Four Thirds 12.2 4032 3024720/30p21.510.450556
13.
 
Panasonic G85 Four Thirds 15.8 4592 34484K/30p22.812.565671
14.
 
Panasonic GH2 Four Thirds 15.9 4608 34561080/60i21.211.365560
15.
 
Panasonic GX7 Four Thirds 15.8 4592 34481080/60p22.612.271870
16.
 
Panasonic GX9 Four Thirds 20.2 5184 38884K/30p23.112.8116374
17.
 
Panasonic L10 Four Thirds 10.0 3648 2736none21.310.842955
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. The GX85 indeed provides for movie recording, while the E-520 does not. The highest resolution format that the GX85 can use is 4K/30p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the GX85 has an electronic viewfinder (2765k dots), while the E-520 has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinder in the GX85 offers a wider field of view (100%) than the one in the E-520 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the GX85 has a higher magnification (0.70x vs 0.46x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Olympus E-520, the Panasonic GX85, and comparable cameras.

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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-520optical n2.7 / 215 fixed n 1/4000s 3.5/s Y Y
2.
 
Panasonic GX852765 n3.0 / 1040 tilting Y 1/4000s 8.0/s Y Y
3.
 
Olympus E-30optical Y2.7 / 230 swivel n 1/8000s 5.0/s Y Y
4.
 
Olympus E-410optical n2.5 / 215 fixed n 1/4000s 3.0/s Y n
5.
 
Olympus E-420optical n2.7 / 215 fixed n 1/4000s 3.5/s Y n
6.
 
Olympus E-450optical n2.7 / 215 fixed n 1/4000s 3.5/s Y n
7.
 
Olympus E-510optical n2.5 / 215 fixed n 1/4000s 3.0/s Y Y
8.
 
Olympus E-600optical n2.7 / 230 swivel n 1/4000s 4.0/s Y Y
9.
 
Olympus E-620optical n2.7 / 230 swivel n 1/4000s 4.0/s Y Y
10.
 
Olympus E-M10 II2360 n3.0 / 1040 tilting Y 1/4000s 8.0/s Y Y
11.
 
Olympus E-P1none n3.0 / 230 fixed n 1/4000s 3.0/s n Y
12.
 
Olympus E-P2optional n3.0 / 230 fixed n 1/4000s 3.0/s n Y
13.
 
Panasonic G852360 n3.0 / 1040 swivel Y 1/4000s 9.0/s Y Y
14.
 
Panasonic GH21534 n3.0 / 460 swivel n 1/4000s 3.0/s Y n
15.
 
Panasonic GX72760 n3.0 / 1040 tilting Y 1/8000s 5.0/s Y Y
16.
 
Panasonic GX92760 n3.0 / 1240 tilting Y 1/4000s 9.0/s Y Y
17.
 
Panasonic L10optical n2.5 / 207 swivel n 1/4000s 3.0/s Y n
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 GX85 has a touchscreen, while the E-520 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

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 GX85 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 GX85 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-520 writes its imaging data to Compact Flash or xD Picture cards, while the GX85 uses SDXC cards. The E-520 features dual card slots, which can be very useful in case a memory card fails. In contrast, the GX85 only has one slot.

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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 E-520 and Panasonic Lumix DMC-GX85 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-520Y- / ----2.0---
2.
 
Panasonic GX85Ystereo / mono--micro2.0Y--
3.
 
Olympus E-30Y- / ----2.0---
4.
 
Olympus E-410Y- / ----2.0---
5.
 
Olympus E-420Y- / ----2.0---
6.
 
Olympus E-450Y- / ----2.0---
7.
 
Olympus E-510Y- / ----2.0---
8.
 
Olympus E-600Y- / ----2.0---
9.
 
Olympus E-620Y- / ----2.0---
10.
 
Olympus E-M10 IIYstereo / mono--micro2.0Y--
11.
 
Olympus E-P1Ystereo / ---mini2.0---
12.
 
Olympus E-P2Ystereo / ---mini2.0---
13.
 
Panasonic G85Ystereo / monoY-micro2.0Y--
14.
 
Panasonic GH2Ystereo / monoY-mini2.0---
15.
 
Panasonic GX7Ystereo / mono--mini2.0YY-
16.
 
Panasonic GX9Ystereo / mono--micro2.0Y-Y
17.
 
Panasonic L10Y- / ----2.0---

It is notable that the GX85 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the E-520 does not provide wifi capability.

The GX85 is a recent model that features in the current product line-up of Panasonic. In contrast, the E-520 has been discontinued (but can be found pre-owned on ebay). There has not been a direct replacement model for the E-520 from Olympus. Further information on the features and operation of the E-520 and GX85 can be found, respectively, in the Olympus E-520 Manual (free pdf) or the online Panasonic GX85 Manual.

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Review summary

So what conclusions can be drawn? Which of the two cameras – the Olympus E-520 or the Panasonic GX85 – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.

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Arguments in favor of the Olympus E-520:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Longer lasting: Can take more shots (750 versus 290) on a single battery charge.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More affordable: Was introduced into a lower priced segment (13 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in May 2008).

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Reasons to prefer the Panasonic Lumix DMC-GX85:

  • More detail: Has more megapixels (15.8 vs 10MP), which boosts linear resolution by 26%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (16 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (1.5 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (2.2 EV of extra DR).
  • Broader imaging potential: Can capture not only stills but also 4K/30p video.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.70x vs 0.46x).
  • 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 (1040k vs 215k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster burst: Shoots at higher frequency (8 vs 3.5 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.
  • More compact: Is smaller (122x71mm vs 136x92mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 109g or 20 percent) and is thus easier to take along.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • More modern: Reflects 7 years and 10 months of technical progress since the E-520 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the GX85 is the clear winner of the contest (22 : 6 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.

E-520 06:22 GX85

How about other alternatives? Do the specifications of the Olympus E-520 and the Panasonic GX85 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 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-520 or the GX85 perform in practice. 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 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.

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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-520..87/100..+ +4.5/54.5/5 May 2008 699ebay.com
2.
 
Panasonic GX854.5/5+ +..82/1005/55/5 Apr 2016 799 amazon.com
3.
 
Olympus E-30......71/1004.5/54/5 Nov 2008 1,299ebay.com
4.
 
Olympus E-410..86/100..+ +4/54.5/5 Mar 2007 699ebay.com
5.
 
Olympus E-420..85/100..+ +4/54.5/5 Mar 2008 599ebay.com
6.
 
Olympus E-450........4/54/5 Mar 2009 499ebay.com
7.
 
Olympus E-510..89/100..+ +3.5/54.5/5 Mar 2007 799ebay.com
8.
 
Olympus E-600..........4.5/5 Aug 2009 449ebay.com
9.
 
Olympus E-6203/588/100..72/1004.5/55/5 Feb 2009 699ebay.com
10.
 
Olympus E-M10 II4.5/5+ +..80/1005/55/5 Aug 2015 649ebay.com
11.
 
Olympus E-P1..+..66/1004/54.5/5 Jun 2009 799ebay.com
12.
 
Olympus E-P23/5+..69/1004/54.5/5 Nov 2009 799ebay.com
13.
 
Panasonic G85..+ +..84/1005/54.5/5 Sep 2016 899ebay.com
14.
 
Panasonic GH25/5+ +..79/1004.5/55/5 Sep 2010 899ebay.com
15.
 
Panasonic GX74/5+..79/1005/55/5 Aug 2013 999ebay.com
16.
 
Panasonic GX94/5+4/584/1004.5/54.5/5 Feb 2018 849ebay.com
17.
 
Panasonic L10..85/100..+3.5/54/5 Aug 2007 599ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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 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.

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    Specifications: Olympus E-520 vs Panasonic GX85

    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-520 Panasonic GX85
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Four Thirds lenses Micro Four Thirds lenses
    Launch Date May 2008 April 2016
    Launch Price USD 699 USD 799
    Sensor Specs Olympus E-520 Panasonic GX85
    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 10 Megapixels 15.8 Megapixels
    Image Resolution 3648 x 2736 pixels 4592 x 3448 pixels
    Pixel Pitch 4.74 μm 3.77 μm
    Pixel Density 4.44 MP/cm2 7.04 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability no Video 4K/30p Video
    ISO Setting 100 - 1,600 ISO 200 - 25,600 ISO
    ISO Boost no Enhancement 100 - 25,600 ISO
    Image Processor TruePic III Venus
    DXO Sensor Quality (score) 55 71
    DXO Color Depth (bits) 21.4 22.9
    DXO Dynamic Range (EV) 10.4 12.6
    DXO Low Light (ISO) 548 662
    Screen Specs Olympus E-520 Panasonic GX85
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.46x 0.70x
    Viewfinder Resolution 2765k dots
    LCD Framing Live View Live View
    Rear LCD Size 2.7inch 3.0inch
    LCD Resolution 215k dots 1040k dots
    LCD Attachment Fixed screen Tilting screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Olympus E-520 Panasonic GX85
    Focus System Phase-detect AF Contrast-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/4000s
    Continuous Shooting 3.5 shutter flaps/s 8 shutter flaps/s
    Electronic Shutterno E-Shutterup to 1/16000s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium CF or XD cards SDXC cards
    Single or Dual Card Slots Dual card slots Single card slot
    Connectivity Specs Olympus E-520 Panasonic GX85
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI micro HDMI
    Wifi Support no Wifi Wifi built-in
    Body Specs Olympus E-520 Panasonic GX85
    Battery Type Olympus BLM-1 Panasonic DMW-BLG10
    Battery Life (CIPA)750 shots per charge290 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 136 x 92 x 68 mm
    (5.4 x 3.6 x 2.7 in)
    122 x 71 x 44 mm
    (4.8 x 2.8 x 1.7 in)
    Camera Weight 535 g (18.9 oz) 426 g (15.0 oz)
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