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Olympus E-620 vs Panasonic GH2

The Olympus E-620 and the Panasonic Lumix DMC-GH2 are two digital cameras that were announced, respectively, in February 2009 and September 2010. The E-620 is a DSLR, while the GH2 is a mirrorless interchangeable lens camera. Both cameras are equipped with a Four Thirds sensor. The Olympus has a resolution of 12.2 megapixels, whereas the Panasonic provides 15.9 MP.

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

Headline Specifications
Olympus E-620   Panasonic GH2
Olympus E-620 Panasonic GH2
Digital single lens reflex Mirrorless system camera
Four Thirds lenses Micro Four Thirds lenses
12.2 MP, Four Thirds Sensor 15.9 MP, Four Thirds Sensor
no Video 1080/60i Video
ISO 100-3200 ISO 160-12800
Optical viewfinder Electronic viewfinder (1534k dots)
2.7" LCD, 230k dots 3.0" LCD, 460k dots
Swivel screen (not touch-sensitive) Swivel screen (not touch-sensitive)
4 shutter flaps per second 3 shutter flaps per second
In-body stabilizationLens stabilization only
500 shots per battery charge330 shots per battery charge
130 x 94 x 60 mm, 521 g 124 x 90 x 76 mm, 442 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus E-620 and the Panasonic Lumix DMC-GH2? 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: Olympus E-620 vs Panasonic GH2

The side-by-side display below illustrates the physical size and weight of the Olympus E-620 and the Panasonic GH2. 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 GH2 can be obtained in two different colors (black, silver), while the E-620 is only available in black.

Size Olympus E-620 vs Panasonic GH2
Compare E-620 versus GH2 top
Comparison E-620 or GH2 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GH2 is notably smaller (9 percent) than the Olympus E-620. Moreover, the GH2 is markedly lighter (15 percent) than the E-620. In this context, it is worth noting that neither the E-620 nor the GH2 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-620) and the Micro Four Thirds Lens Catalog (GH2). Mirrorless cameras, such as the GH2, 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-620 gets 500 shots out of its BLS-1 battery, while the GH2 can take 330 images on a single charge of its DMW-BLC12 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons 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 E-620» 5.1 in 3.7 in 2.4 in 18.4 oz 500 n Feb 2009 699- i Olympus E-620
 
Panasonic GH2« 4.9 in 3.5 in 3.0 in 15.6 oz 330 n Sep 2010 899- i Panasonic GH2
 
Olympus E-PL1« » 4.5 in 2.8 in 1.7 in 11.8 oz 290 n Feb 2010 599- i Olympus E-PL1
 
Olympus E-450« » 5.1 in 3.6 in 2.1 in 15.5 oz 500 n Mar 2009 499- i Olympus E-450
 
Olympus E-600« » 5.1 in 3.7 in 2.4 in 18.9 oz 500 n Aug 2009 449- i Olympus E-600
 
Olympus E-P1« » 4.8 in 2.8 in 1.4 in 12.5 oz 300 n Jun 2009 799- i Olympus E-P1
 
Olympus E-P2« » 4.8 in 2.8 in 1.4 in 12.5 oz 300 n Nov 2009 799- i Olympus E-P2
 
Olympus E-30« » 5.6 in 4.3 in 3.0 in 24.7 oz 750 n Nov 2008 1,299- i Olympus E-30
 
Olympus E-420« » 5.1 in 3.6 in 2.1 in 15.5 oz 500 n Mar 2008 599- i Olympus E-420
 
Olympus E-520« » 5.4 in 3.6 in 2.7 in 18.9 oz 750 n May 2008 699- i Olympus E-520
 
Olympus E-410« » 5.1 in 3.6 in 2.1 in 15.3 oz 500 n Mar 2007 699- i Olympus E-410
 
Olympus E-510« » 5.4 in 3.6 in 2.7 in 19.0 oz 750 n Mar 2007 799- i Olympus E-510
 
Panasonic GM5« » 3.9 in 2.4 in 1.4 in 7.4 oz 220 n Sep 2014 749- i Panasonic GM5
 
Panasonic GM1« » 3.9 in 2.2 in 1.2 in 7.2 oz 230 n Oct 2013 749- i Panasonic GM1
 
Panasonic GX7« » 4.8 in 2.8 in 2.2 in 14.2 oz 350 n Aug 2013 999- i Panasonic GX7
 
Panasonic GF1« » 4.7 in 2.8 in 1.4 in 13.6 oz 380 n Sep 2009 749- i Panasonic GF1
 
Panasonic GH1« » 4.9 in 3.5 in 1.8 in 13.6 oz 300 n Mar 2009 899- i Panasonic GH1
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 retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The E-620 was launched at a somewhat lower price (by 22 percent) than the GH2, 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: Olympus E-620 vs Panasonic GH2

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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 more expensive and 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.

In terms of underlying technology, both cameras are build around CMOS sensors.

Olympus E-620 and Panasonic GH2 sensor measures

While the two cameras under review share the same sensor size, the GH2 offers a higher resolution of 15.9 megapixels, compared with 12.2 MP of the E-620. This megapixels advantage translates into a 14 percent gain in linear resolution. On the other hand, these sensor specs imply that the GH2 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.76μm versus 4.29μm for the E-620). However, it should be noted that the GH2 is a somewhat more recent model (by 1 year and 6 months) than the E-620, and its sensor might have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size.

The resolution advantage of the Panasonic GH2 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GH2 for good quality output (200 dots per inch) amounts to 23 x 17.3 inch or 58.5 x 43.9 cm, for very good quality (250 dpi) 18.4 x 13.8 inch or 46.8 x 35.1 cm, and for excellent quality (300 dpi) 15.4 x 11.5 inch or 39 x 29.3 cm. The corresponding values for the Olympus E-620 are 20.2 x 15.1 inch or 51.2 x 38.4 cm for good quality, 16.1 x 12.1 inch or 41 x 30.7 cm for very good quality, and 13.4 x 10.1 inch or 34.1 x 25.6 cm for excellent quality prints.

The Olympus E-620 has a native sensitivity range from ISO 100 to ISO 3200. The corresponding ISO settings for the Panasonic Lumix DMC-GH2 are ISO 160 to ISO 12800 (no boost).

E-620 versus GH2 MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 GH2 has a markedly higher DXO score than the E-620 (overall score 5 points higher), which will translate into better image quality. The advantage is based on 0.1 bits lower color depth, 1 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.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Olympus E-620» Four Thirds 12.2 4032 3024-21.310.353655Olympus E-620
 
Panasonic GH2« Four Thirds 15.9 4608 34561080/60i21.211.365560Panasonic GH2
 
Olympus E-PL1« » Four Thirds 12.2 4032 3024720/30p21.510.148754Olympus E-PL1
 
Olympus E-450« » Four Thirds 10.0 3648 2736-21.510.551256Olympus E-450
 
Olympus E-600« » Four Thirds 12.2 4032 3024-21.510.354155Olympus E-600
 
Olympus E-P1« » Four Thirds 12.2 4032 3024720/30p21.410.453655Olympus E-P1
 
Olympus E-P2« » Four Thirds 12.2 4032 3024720/30p21.510.450556Olympus E-P2
 
Olympus E-30« » Four Thirds 12.2 4032 3024-21.310.453055Olympus E-30
 
Olympus E-420« » Four Thirds 10.0 3648 2736-21.510.452756Olympus E-420
 
Olympus E-520« » Four Thirds 10.0 3648 2736-21.410.454855Olympus E-520
 
Olympus E-410« » Four Thirds 10.0 3648 2736-21.110.049451Olympus E-410
 
Olympus E-510« » Four Thirds 10.0 3648 2736-21.210.044252Olympus E-510
 
Panasonic GM5« » Four Thirds 15.8 4592 34481080/60p22.111.772166Panasonic GM5
 
Panasonic GM1« » Four Thirds 15.8 4592 34481080/60i22.311.766066Panasonic GM1
 
Panasonic GX7« » Four Thirds 15.8 4592 34481080/60p22.612.271870Panasonic GX7
 
Panasonic GF1« » Four Thirds 12.0 4000 3000720/30p21.210.351354Panasonic GF1
 
Panasonic GH1« » Four Thirds 12.0 4000 30001080/24p21.611.677264Panasonic GH1

Many modern cameras are not only capable of taking still images, but can also record movies. The GH2 indeed provides for movie recording, while the E-620 does not. The highest resolution format that the GH2 can use is 1080/60i.

 

Feature comparison: Olympus E-620 vs Panasonic GH2

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the GH2 has an electronic viewfinder (1534k dots), while the E-620 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 GH2 offers a wider field of view (100%) than the one in the E-620 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the GH2 has a higher magnification (0.71x vs 0.48x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Olympus E-620 and Panasonic GH2 along with similar information for a selection of comparators.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
 
Olympus E-620»optical n 2.7 230 swivel n 1/4000s 4.0 Y Y Olympus E-620
 
Panasonic GH2«1534 n 3.0 460 swivel n 1/4000s 3.0 Y n Panasonic GH2
 
Olympus E-PL1« »- n 2.7 230 fixed n 1/2000s 3.0 Y Y Olympus E-PL1
 
Olympus E-450« »optical n 2.7 215 fixed n 1/4000s 3.5 Y n Olympus E-450
 
Olympus E-600« »optical n 2.7 230 swivel n 1/4000s 4.0 Y Y Olympus E-600
 
Olympus E-P1« »- n 3.0 230 fixed n 1/4000s 3.0 n Y Olympus E-P1
 
Olympus E-P2« »- n 3.0 230 fixed n 1/4000s 3.0 n Y Olympus E-P2
 
Olympus E-30« »optical Y 2.7 230 swivel n 1/8000s 5.0 Y Y Olympus E-30
 
Olympus E-420« »optical n 2.7 215 fixed n 1/4000s 3.5 Y n Olympus E-420
 
Olympus E-520« »optical n 2.7 215 fixed n 1/4000s 3.5 Y Y Olympus E-520
 
Olympus E-410« »optical n 2.5 215 fixed n 1/4000s 3.0 Y n Olympus E-410
 
Olympus E-510« »optical n 2.5 215 fixed n 1/4000s 3.0 Y Y Olympus E-510
 
Panasonic GM5« »1166 n 3.0 921 fixed Y 1/500s 5.8 n n Panasonic GM5
 
Panasonic GM1« »- n 3.0 1036 fixed Y 1/500s 5.0 Y n Panasonic GM1
 
Panasonic GX7« »2760 n 3.0 1040 tilting Y 1/8000s 5.0 Y Y Panasonic GX7
 
Panasonic GF1« »- n 3.0 460 fixed n 1/4000s 3.0 Y n Panasonic GF1
 
Panasonic GH1« »1440 n 3.0 460 swivel n 1/4000s 3.0 Y n Panasonic GH1

One feature that differentiates the E-620 and the GH2 is in-body image stabilization (IBIS). The E-620 reduces the risk of handshake-induced blur with all attached lenses, while the GH2 has to rely on optical image stabilization in OIS-equipped lenses to achieve the same effect.

Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.

The E-620 writes its imaging data to Compact Flash or xD Picture cards, while the GH2 uses SDXC cards. The E-620 features dual card slots, which can be very useful in case a memory card fails. In contrast, the GH2 only has one slot.

 

Connectivity comparison: Olympus E-620 vs Panasonic GH2

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-620 and Panasonic Lumix DMC-GH2 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
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Olympus E-620»Y-----2.0---Olympus E-620
 
Panasonic GH2«YstereomonoY-mini2.0---Panasonic GH2
 
Olympus E-PL1« »Ystereo---mini2.0---Olympus E-PL1
 
Olympus E-450« »Y-----2.0---Olympus E-450
 
Olympus E-600« »Y-----2.0---Olympus E-600
 
Olympus E-P1« »Ystereo---mini2.0---Olympus E-P1
 
Olympus E-P2« »Ystereo---mini2.0---Olympus E-P2
 
Olympus E-30« »Y-----2.0---Olympus E-30
 
Olympus E-420« »Y-----2.0---Olympus E-420
 
Olympus E-520« »Y-----2.0---Olympus E-520
 
Olympus E-410« »Y-----2.0---Olympus E-410
 
Olympus E-510« »Y-----2.0---Olympus E-510
 
Panasonic GM5« »Ystereomono--micro2.0Y--Panasonic GM5
 
Panasonic GM1« »-stereomono--micro2.0Y--Panasonic GM1
 
Panasonic GX7« »Ystereomono--mini2.0YY-Panasonic GX7
 
Panasonic GF1« »Ymonomono--mini2.0---Panasonic GF1
 
Panasonic GH1« »Ystereo-Y-mini2.0---Panasonic GH1

Both the E-620 and the GH2 have been discontinued, but can regularly be found used on eBay. The E-620 was replaced by the Olympus E-600, while the GH2 was followed by the Panasonic GH3. 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: Olympus E-620 vs Panasonic GH2

So how do things add up? Which of the two cameras – the Olympus E-620 or the Panasonic GH2 – has the upper hand? Is one clearly better than the other? 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 E-620:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Faster burst: Shoots at higher frequency (4 vs 3 flaps/sec) to capture the decisive moment.
  • Longer lasting: Can take more shots (500 versus 330) on a single battery charge.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • 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 (22 percent cheaper at launch).
  • More heavily discounted: Has been on the market for longer (launched in February 2009).

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Advantages of the Panasonic Lumix DMC-GH2:

  • More detail: Has more megapixels (15.9 vs 12.2MP), which boosts linear resolution by 14%.
  • Better image quality: Scores markedly higher (5 points) in the DXO overall evaluation.
  • More dynamic range: Captures a broader range of light and dark details (1 EV of extra DR).
  • Broader imaging potential: Can capture not only stills but also 1080/60i 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 (0.71x vs 0.48x).
  • Larger screen: Has a bigger rear LCD (3.0" vs 2.7") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (460k vs 230k dots).
  • Less heavy: Has a lower weight (by 79g or 15 percent) and is thus easier to take along.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • More modern: Was introduced somewhat (1 year and 6 months) more recently.

If the count of individual advantages (bullet points above) is taken as a guide, the GH2 is the clear winner of the contest (12 : 7 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-620 07:12 GH2

How about other alternatives? Do the specifications of the Olympus E-620 and the Panasonic GH2 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-620 or the GH2. 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: Olympus E-620 vs Panasonic GH2

This is where reviews by experts come in. 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
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Olympus E-620»88/10072/1004.5/5o5/5 Feb 2009 699- i Olympus E-620
 
Panasonic GH2«+ +79/1004.5/54.5/55/5 Sep 2010 899- i Panasonic GH2
 
Olympus E-PL1« »86/10069/1004/54.5/54.5/5 Feb 2010 599- i Olympus E-PL1
 
Olympus E-450« »--4/5-4/5 Mar 2009 499- i Olympus E-450
 
Olympus E-600« »----4.5/5 Aug 2009 449- i Olympus E-600
 
Olympus E-P1« »+66/1004/54/54.5/5 Jun 2009 799- i Olympus E-P1
 
Olympus E-P2« »+69/1004/54.5/54.5/5 Nov 2009 799- i Olympus E-P2
 
Olympus E-30« »-71/1004.5/5-4/5 Nov 2008 1,299- i Olympus E-30
 
Olympus E-420« »85/100+ +4/5o4.5/5 Mar 2008 599- i Olympus E-420
 
Olympus E-520« »87/100+ +4.5/54/54.5/5 May 2008 699- i Olympus E-520
 
Olympus E-410« »86/100+ +4/5o4.5/5 Mar 2007 699- i Olympus E-410
 
Olympus E-510« »89/100+ +3.5/5o4.5/5 Mar 2007 799- i Olympus E-510
 
Panasonic GM5« »+77/1005/55/54.5/5 Sep 2014 749- i Panasonic GM5
 
Panasonic GM1« »+78/1005/54.5/54.5/5 Oct 2013 749- i Panasonic GM1
 
Panasonic GX7« »+79/1005/54.5/55/5 Aug 2013 999- i Panasonic GX7
 
Panasonic GF1« »85/10069/1004.5/54.5/54.5/5 Sep 2009 749- i Panasonic GF1
 
Panasonic GH1« »+ +72/1004.5/55/54.5/5 Mar 2009 899- i Panasonic GH1
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

The review scores listed above should be treated with care, 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. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Olympus E-620:
Check Ebay offers
Panasonic GH2:
Check Ebay offers

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. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Olympus E-620 vs Panasonic GH2

    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-620 Panasonic GH2
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Four Thirds lenses Micro Four Thirds lenses
    Launch Date February 2009 September 2010
    Launch Price USD 699 USD 899
    Sensor Specs Olympus E-620 Panasonic GH2
    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 15.9 Megapixels
    Image Resolution 4032 x 3024 pixels 4608 x 3456 pixels
    Pixel Pitch 4.29 μm 3.76 μm
    Pixel Density 5.42 MP/cm2 7.08 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 1080/60i Video
    ISO Setting 100-3200 ISO 160-12800 ISO
    Image Processor TruePic III+ Venus FHD
    DXO Sensor Quality (score) 55 60
    DXO Color Depth (bits) 21.3 21.2
    DXO Dynamic Range (EV) 10.3 11.3
    DXO Low Light (ISO) 536 655
    Screen Specs Olympus E-620 Panasonic GH2
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.48x 0.71x
    Viewfinder Resolution 1534k dots
    LCD Framing Live View Live View
    Rear LCD Size 2.7 inch 3.0 inch
    LCD Resolution 230k dots 460k dots
    LCD Attachment Swivel screen Swivel screen
    Shooting Specs Olympus E-620 Panasonic GH2
    Autofocus System Phase-detect AF Contrast-detect AF
    Continuous Shooting 4 shutter flaps/s 3 shutter flaps/s
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash Build-in Flash Build-in Flash
    Storage Medium CF or XD cards SDXC cards
    Second Storage Option Dual card slots Single card slot
    Connectivity Specs Olympus E-620 Panasonic GH2
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Wifi Support no Wifi no Wifi
    Body Specs Olympus E-620 Panasonic GH2
    Battery Type BLS-1 power pack DMW-BLC12 power pack
    Battery Life (CIPA)500 shots per charge330 shots per charge
    Body Dimensions 130 x 94 x 60 mm
    (5.1 x 3.7 x 2.4 in)
    124 x 90 x 76 mm
    (4.9 x 3.5 x 3.0 in)
    Camera Weight 521 g (18.4 oz) 442 g (15.6 oz)

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