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Olympus E-520 vs Sony A99

The Olympus E-520 and the Sony Alpha SLT-A99 are two digital cameras that were officially introduced, respectively, in May 2008 and September 2012. Both are DSLR (Digital Single Lens Reflex) cameras that are based on a Four Thirds (E-520) and a full frame (A99) sensor. The Olympus has a resolution of 10 megapixels, whereas the Sony provides 24 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 Sony A99
Olympus E-520 Sony A99
Digital single lens reflex Digital single lens reflex
Four Thirds lenses Sony A mount lenses
10 MP, Four Thirds Sensor 24 MP, Full Frame Sensor
no Video 1080/60p Video
ISO 100-1,600 ISO 100-25,600
Optical viewfinder Electronic viewfinder (2359k dots)
2.7 LCD, 215k dots 3.0 LCD, 1229k dots
Fixed screen (not touch-sensitive) Fully flexible screen (no touchscreen)
3.5 shutter flaps per second 6 shutter flaps per second
In-body stabilizationIn-body stabilization
not weather sealedWeathersealed body
750 shots per battery charge500 shots per battery charge
136 x 92 x 68 mm, 535 g 147 x 111 x 78 mm, 812 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus E-520 and the Sony Alpha SLT-A99? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

Body comparison

An illustration of the physical size and weight of the Olympus E-520 and the Sony A99 is provided 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 measures are rounded to the nearest millimeter.

Size Olympus E-520 vs Sony A99
Compare E-520 versus A99 top
Comparison E-520 or A99 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A99 is notably larger (30 percent) than the Olympus E-520. Moreover, the A99 is substantially heavier (52 percent) than the E-520. It is noteworthy in this context that the A99 is splash and dust-proof, while the E-520 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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the E-520 gets 750 shots out of its BLM-1 battery, while the A99 can take 500 images on a single charge of its NP-FM500H 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
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
 
Olympus E-520 5.4 in 3.6 in 2.7 in 18.9 oz 750 n May 2008 699i
 
Sony A99 5.8 in 4.4 in 3.1 in 28.6 oz 500 Y Sep 2012 2,799i
 
Olympus E-450 5.1 in 3.6 in 2.1 in 15.5 oz 500 n Mar 2009 499i
 
Olympus E-600 5.1 in 3.7 in 2.4 in 18.9 oz 500 n Aug 2009 449i
 
Olympus E-620 5.1 in 3.7 in 2.4 in 18.4 oz 500 n Feb 2009 699i
 
Olympus E-P1 4.8 in 2.8 in 1.4 in 12.5 oz 300 n Jun 2009 799i
 
Olympus E-P2 4.8 in 2.8 in 1.4 in 12.5 oz 300 n Nov 2009 799i
 
Olympus E-30 5.6 in 4.3 in 3.0 in 24.7 oz 750 n Nov 2008 1,299i
 
Olympus E-420 5.1 in 3.6 in 2.1 in 15.5 oz 500 n Mar 2008 599i
 
Olympus E-410 5.1 in 3.6 in 2.1 in 15.3 oz 500 n Mar 2007 699i
 
Olympus E-510 5.4 in 3.6 in 2.7 in 19.0 oz 750 n Mar 2007 799i
 
Panasonic L10 5.3 in 3.8 in 3.1 in 19.6 oz 450 n Aug 2007 599i
 
Sony A9 II 5.1 in 3.8 in 3.0 in 23.9 oz 690 Y Oct 2019 4,499 i
 
Sony A99 II 5.6 in 4.1 in 3.0 in 29.9 oz 490 Y Sep 2016 3,199 i
 
Sony A77 5.6 in 4.1 in 3.2 in 25.8 oz 470 Y Aug 2011 1,399i
 
Sony A850 6.1 in 4.6 in 3.2 in 31.6 oz 880 Y Aug 2009 1,999i
 
Sony A900 6.1 in 4.6 in 3.2 in 31.6 oz 880 Y Sep 2008 2,999i
Notes: 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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The E-520 was launched at a markedly lower price (by 75 percent) than the A99, 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.

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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. 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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Olympus E-520 features a Four Thirds sensor and the Sony A99 a full frame sensor. The sensor area in the A99 is 279 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.0. The sensor in the E-520 has a native 4:3 aspect ratio, while the one in the A99 offers a 3:2 aspect.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.

Olympus E-520 and Sony A99 sensor measures

With 24MP, the A99 offers a higher resolution than the E-520 (10MP), but the A99 nevertheless has larger individual pixels (pixel pitch of 5.96μm versus 4.74μm for the E-520) due to its larger sensor. Moreover, the A99 is a much more recent model (by 4 years and 4 months) than the E-520, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.

The resolution advantage of the Sony A99 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A99 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 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 Sony Alpha SLT-A99 are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-25600.

E-520 versus A99 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 A99 offers substantially better image quality than the E-520 (overall score 34 points higher). The advantage is based on 3.6 bits higher color depth, 3.6 EV in additional dynamic range, and 1.5 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
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
 
Olympus E-520 Four Thirds 10.0 3648 2736none21.410.454855
 
Sony A99 Full Frame 24.0 6000 40001080/60p25.014.0155589
 
Olympus E-450 Four Thirds 10.0 3648 2736none21.510.551256
 
Olympus E-600 Four Thirds 12.2 4032 3024none21.510.354155
 
Olympus E-620 Four Thirds 12.2 4032 3024none21.310.353655
 
Olympus E-P1 Four Thirds 12.2 4032 3024720/30p21.410.453655
 
Olympus E-P2 Four Thirds 12.2 4032 3024720/30p21.510.450556
 
Olympus E-30 Four Thirds 12.2 4032 3024none21.310.453055
 
Olympus E-420 Four Thirds 10.0 3648 2736none21.510.452756
 
Olympus E-410 Four Thirds 10.0 3648 2736none21.110.049451
 
Olympus E-510 Four Thirds 10.0 3648 2736none21.210.044252
 
Panasonic L10 Four Thirds 10.0 3648 2736none21.310.842955
 
Sony A9 II Full Frame 24.0 6000 40004K/30p25.014.0343493
 
Sony A99 II Full Frame 42.2 7952 53044K/30p25.413.4231792
 
Sony A77 APS-C 24.0 6000 40001080/60p24.013.280178
 
Sony A850 Full Frame 24.4 6048 4032none23.812.2141579
 
Sony A900 Full Frame 24.4 6048 4032none23.712.3143179

Many modern cameras cannot only take still pictures, but also record videos. The A99 indeed provides for movie recording, while the E-520 does not. The highest resolution format that the A99 can use is 1080/60p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the A99 has an electronic viewfinder (2359k 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 A99 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 A99 has a higher magnification (0.71x 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 Sony A99, and comparable cameras.

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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
 
Olympus E-520optical n 2.7 215 fixed n 1/4000s 3.5 Y Y
 
Sony A992359 Y 3.0 1229 full-flex n 1/8000s 6.0 n Y
 
Olympus E-450optical n 2.7 215 fixed n 1/4000s 3.5 Y n
 
Olympus E-600optical n 2.7 230 swivel n 1/4000s 4.0 Y Y
 
Olympus E-620optical n 2.7 230 swivel n 1/4000s 4.0 Y Y
 
Olympus E-P1none n 3.0 230 fixed n 1/4000s 3.0 n Y
 
Olympus E-P2optional n 3.0 230 fixed n 1/4000s 3.0 n Y
 
Olympus E-30optical Y 2.7 230 swivel n 1/8000s 5.0 Y Y
 
Olympus E-420optical n 2.7 215 fixed n 1/4000s 3.5 Y n
 
Olympus E-410optical n 2.5 215 fixed n 1/4000s 3.0 Y n
 
Olympus E-510optical n 2.5 215 fixed n 1/4000s 3.0 Y Y
 
Panasonic L10optical n 2.5 207 swivel n 1/4000s 3.0 Y n
 
Sony A9 II3686 n 3.0 1440 tilting Y 1/8000s 10.0 n Y
 
Sony A99 II2400 Y 3.0 1229 full-flex n 1/8000s 12.0 n Y
 
Sony A772359 Y 3.0 921 full-flex n 1/8000s 12.0 Y Y
 
Sony A850optical Y 3.0 922 fixed n 1/8000s 3.0 n Y
 
Sony A900optical Y 3.0 922 fixed n 1/8000s 5.0 n Y

One difference between the cameras concerns the presence of an on-board flash. The E-520 has one, while the A99 does not. While the built-in flash of the E-520 is not very powerful, it can at times be useful as a fill-in light.

The A99 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-520 does not have a selfie-screen.

The E-520 writes its imaging data to Compact Flash or xD Picture cards, while the A99 uses SDXC or Memory Stick PRO Duo cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.

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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 Sony Alpha SLT-A99 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
 
Olympus E-520Y-----2.0---
 
Sony A99YstereomonoYYmini2.0---
 
Olympus E-450Y-----2.0---
 
Olympus E-600Y-----2.0---
 
Olympus E-620Y-----2.0---
 
Olympus E-P1Ystereo---mini2.0---
 
Olympus E-P2Ystereo---mini2.0---
 
Olympus E-30Y-----2.0---
 
Olympus E-420Y-----2.0---
 
Olympus E-410Y-----2.0---
 
Olympus E-510Y-----2.0---
 
Panasonic L10Y-----2.0---
 
Sony A9 IIYstereomonoYYmicro3.1YYY
 
Sony A99 IIYstereomonoYYmicro2.0YYY
 
Sony A77YstereomonoY-mini2.0---
 
Sony A850Y----mini2.0---
 
Sony A900Y----mini2.0---

Studio photographers will appreciate that the Sony A99 (unlike the E-520) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Travel and landscape photographers will find it useful that the A99 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the E-520 and the A99 have been discontinued, but can regularly be found used on eBay. The A99 was replaced by the Sony A99 II, while the E-520 does not have a direct successor. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Olympus and Sony websites.

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Review summary

So what conclusions can be drawn? Which of the two cameras – the Olympus E-520 or the Sony A99 – 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-520:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • More compact: Is smaller (136x92mm vs 147x111mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 277g or 34 percent) and hence easier to carry around.
  • Longer lasting: Can take more shots (750 versus 500) on a single battery charge.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (75 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 Sony Alpha SLT-A99:

  • More detail: Has more megapixels (24 vs 10MP), which boosts linear resolution by 58%.
  • Better image quality: Scores substantially higher (34 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (3.6 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (3.6 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (1.5 stops ISO advantage).
  • Broader imaging potential: Can capture not only stills but also 1080/60p 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 0.46x).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • 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 (1229k vs 215k dots).
  • More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (6 vs 3.5 flaps/sec) to capture the decisive moment.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • More modern: Reflects 4 years and 4 months of technical progress since the E-520 launch.

If the count of individual advantages (bullet points above) is taken as a guide, the A99 is the clear winner of the contest (20 : 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-520 07:20 A99

How about other alternatives? Do the specifications of the Olympus E-520 and the Sony A99 place the cameras among the top in their class? Find out in the latest Best DSLR 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 incomplete and does no justice, for example, to the way the E-520 or the A99 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 expert reviews are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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.

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Review Scores
  Camera
Model
camera
  labs  
dp
review  
ephoto
  zine  
imaging
resource
photography
  blog  
Camera
Launch
Launch
Price (USD)
Street
Price
 
Olympus E-52087/100+ +4.5/54/54.5/5 May 2008 699i
 
Sony A99..84/1004.5/5o4.5/5 Sep 2012 2,799i
 
Olympus E-450....4/5..4/5 Mar 2009 499i
 
Olympus E-600........4.5/5 Aug 2009 449i
 
Olympus E-62088/10072/1004.5/5o5/5 Feb 2009 699i
 
Olympus E-P1+66/1004/54/54.5/5 Jun 2009 799i
 
Olympus E-P2+69/1004/54.5/54.5/5 Nov 2009 799i
 
Olympus E-30..71/1004.5/5..4/5 Nov 2008 1,299i
 
Olympus E-42085/100+ +4/5o4.5/5 Mar 2008 599i
 
Olympus E-41086/100+ +4/5o4.5/5 Mar 2007 699i
 
Olympus E-51089/100+ +3.5/5o4.5/5 Mar 2007 799i
 
Panasonic L1085/100+3.5/5o4/5 Aug 2007 599i
 
Sony A9 II..90/1005/5..5/5 Oct 2019 4,499 i
 
Sony A99 II..85/1004.5/54.5/54.5/5 Sep 2016 3,199 i
 
Sony A7791/10081/100..4.5/55/5 Aug 2011 1,399i
 
Sony A850..75/100..4/54.5/5 Aug 2009 1,999i
 
Sony A900+ ++ +4.5/54/55/5 Sep 2008 2,999i
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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.

Olympus E-520:
Check Ebay offers
Sony A99:
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Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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    Specifications: Olympus E-520 vs Sony A99

    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 Sony A99
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Four Thirds lenses Sony A mount lenses
    Launch Date May 2008 September 2012
    Launch Price USD 699 USD 2,799
    Sensor Specs Olympus E-520 Sony A99
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor Full Frame Sensor
    Sensor Size 17.3 x 13.0 mm 35.8 x 23.8 mm
    Sensor Area 224.9 mm2 852.04 mm2
    Sensor Diagonal 21.6 mm 43 mm
    Crop Factor 2.0x 1.0x
    Sensor Resolution 10 Megapixels 24 Megapixels
    Image Resolution 3648 x 2736 pixels 6000 x 4000 pixels
    Pixel Pitch 4.74 μm 5.96 μm
    Pixel Density 4.44 MP/cm2 2.82 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 1080/60p Video
    ISO Setting 100 - 1,600 ISO 100 - 25,600 ISO
    ISO Boost no Enhancement 50 - 25,600 ISO
    Image Processor TruePic III BIONZ X
    DXO Sensor Quality (score) 55 89
    DXO Color Depth (bits) 21.4 25.0
    DXO Dynamic Range (EV) 10.4 14.0
    DXO Low Light (ISO) 548 1555
    Screen Specs Olympus E-520 Sony A99
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.46x 0.71x
    Viewfinder Resolution 2359k dots
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 2.7inch 3.0inch
    LCD Resolution 215k dots 1229k dots
    LCD Attachment Fixed screen Fully flexible screen
    Shooting Specs Olympus E-520 Sony A99
    Focus System Phase-detect AF Phase-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 3.5 shutter flaps/s 6 shutter flaps/s
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash Build-in Flash no On-Board Flash
    Storage Medium CF or XD cards MS or SDXC cards
    Second Storage Option Dual card slots Dual card slots
    Connectivity Specs Olympus E-520 Sony A99
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi no Wifi
    Geotagging no internal GPS GPS built-in
    Body Specs Olympus E-520 Sony A99
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type BLM-1 NP-FM500H
    Battery Life (CIPA)750 shots per charge500 shots per charge
    Body Dimensions 136 x 92 x 68 mm
    (5.4 x 3.6 x 2.7 in)
    147 x 111 x 78 mm
    (5.8 x 4.4 x 3.1 in)
    Camera Weight 535 g (18.9 oz) 812 g (28.6 oz)

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