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Olympus E-PL1 vs Sony A77

The Olympus PEN E-PL1 and the Sony Alpha SLT-A77 are two digital cameras that were officially introduced, respectively, in February 2010 and August 2011. The E-PL1 is a mirrorless interchangeable lens camera, while the A77 is a DSLR. The cameras are based on a Four Thirds (E-PL1) and an APS-C (A77) sensor. The Olympus has a resolution of 12.2 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-PL1
versus
Sony A77
Olympus E-PL1   Sony A77
Mirrorless system camera Digital single lens reflex
Micro Four Thirds lenses Sony A mount lenses
12.2 MP – Four Thirds sensor 24 MP – APS-C sensor
720/30p Video 1080/60p Video
ISO 200-3,200 ISO 100-16,000 (50 - 25,600)
Viewfinder optional Electronic viewfinder (2359k dots)
2.7" LCD – 230k dots 3.0" LCD – 921k dots
Fixed screen (not touch-sensitive) Fully flexible screen (no touchscreen)
3 shutter flaps per second 12 shutter flaps per second
In-body stabilizationIn-body stabilization
not weather sealedWeathersealed body
290 shots per battery charge470 shots per battery charge
115 x 72 x 42 mm, 334 g 143 x 104 x 81 mm, 732 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus PEN E-PL1 and the Sony Alpha SLT-A77? 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-PL1 and the Sony A77 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth dimensions are rounded to the nearest millimeter.

The E-PL1 can be obtained in four different colors (black, blue, yellow, white), while the A77 is only available in black.

Size Olympus E-PL1 vs Sony A77
Compare E-PL1 versus A77 top
Comparison E-PL1 or A77 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A77 is considerably larger (80 percent) than the Olympus E-PL1. Moreover, the A77 is substantially heavier (119 percent) than the E-PL1. It is noteworthy in this context that the A77 is splash and dust-proof, while the E-PL1 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-PL1 gets 290 shots out of its Olympus BLS-1 battery, while the A77 can take 470 images on a single charge of its Sony 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
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-PL1 115 mm 72 mm 42 mm 334 g 290 n Feb 2010 599ebay.com
2.
 
Sony A77 143 mm 104 mm 81 mm 732 g 470 Y Aug 2011 1,399ebay.com
3.
 
Olympus XZ-2 113 mm 65 mm 48 mm 346 g 340 n Sep 2012 599ebay.com
4.
 
Olympus E-P3 122 mm 69 mm 34 mm 369 g 330 n Jun 2011 799ebay.com
5.
 
Olympus E-PL2 114 mm 72 mm 42 mm 362 g 280 n Jan 2011 599ebay.com
6.
 
Olympus E-PL3 110 mm 64 mm 37 mm 313 g 300 n Jun 2011 599ebay.com
7.
 
Olympus E-PM1 110 mm 64 mm 34 mm 265 g 330 n Jun 2011 499ebay.com
8.
 
Olympus E-620 130 mm 94 mm 60 mm 521 g 500 n Feb 2009 699ebay.com
9.
 
Olympus E-P1 121 mm 70 mm 36 mm 355 g 300 n Jun 2009 799ebay.com
10.
 
Olympus E-P2 121 mm 70 mm 36 mm 355 g 300 n Nov 2009 799ebay.com
11.
 
Panasonic GH5 139 mm 98 mm 87 mm 725 g 410 Y Jan 2017 1,999ebay.com
12.
 
Panasonic G10 124 mm 84 mm 74 mm 388 g 380 n Mar 2010 499ebay.com
13.
 
Panasonic GF2 113 mm 68 mm 33 mm 310 g 300 n Nov 2010 549ebay.com
14.
 
Sony A9 127 mm 96 mm 63 mm 673 g 650 Y Apr 2017 4,499ebay.com
15.
 
Sony A7 II 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999ebay.com
16.
 
Sony A77 II 143 mm 104 mm 81 mm 647 g 480 Y May 2014 1,199ebay.com
17.
 
Sony A99 147 mm 111 mm 78 mm 812 g 500 Y Sep 2012 2,799ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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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-PL1 was launched at a markedly lower price (by 57 percent) than the A77, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. 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-PL1 features a Four Thirds sensor and the Sony A77 an APS-C sensor. The sensor area in the A77 is 63 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.5. The sensor in the E-PL1 has a native 4:3 aspect ratio, while the one in the A77 offers a 3:2 aspect.

Olympus E-PL1 and Sony A77 sensor measures

With 24MP, the A77 offers a higher resolution than the E-PL1 (12.2MP), but the A77 has smaller individual pixels (pixel pitch of 3.91μm versus 4.29μm for the E-PL1). Yet, the A77 is a somewhat more recent model (by 1 year and 6 months) than the E-PL1, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units.

The resolution advantage of the Sony A77 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A77 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-PL1 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-PL1 has a native sensitivity range from ISO 200 to ISO 3200. The corresponding ISO settings for the Sony Alpha SLT-A77 are ISO 100 to ISO 16000, with the possibility to increase the ISO range to 50-25600.

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-PL1 versus A77 MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. Of the two cameras under consideration, the A77 offers substantially better image quality than the E-PL1 (overall score 24 points higher). The advantage is based on 2.5 bits higher color depth, 3.1 EV in additional dynamic range, and 0.7 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
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Olympus E-PL1 Four Thirds 12.2 4032 3024720/30p21.510.148754
2.
 
Sony A77 APS-C 24.0 6000 40001080/60p24.013.280178
3.
 
Olympus XZ-2 1/1.7 11.8 3968 29761080/30p20.411.321649
4.
 
Olympus E-P3 Four Thirds 12.2 4032 30241080/60i20.810.153651
5.
 
Olympus E-PL2 Four Thirds 12.2 4032 3024720/30p21.410.257355
6.
 
Olympus E-PL3 Four Thirds 12.2 4032 30241080/60i20.910.349952
7.
 
Olympus E-PM1 Four Thirds 12.2 4032 30241080/60i21.010.349952
8.
 
Olympus E-620 Four Thirds 12.2 4032 3024none21.310.353655
9.
 
Olympus E-P1 Four Thirds 12.2 4032 3024720/30p21.410.453655
10.
 
Olympus E-P2 Four Thirds 12.2 4032 3024720/30p21.510.450556
11.
 
Panasonic GH5 Four Thirds 20.2 5184 38884K/60p23.913.080777
12.
 
Panasonic G10 Four Thirds 12.0 4000 3000720/30p21.210.141152
13.
 
Panasonic GF2 Four Thirds 12.0 4000 30001080/60i21.210.350654
14.
 
Sony A9 Full Frame 24.0 6000 40004K/30p24.913.3351792
15.
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990
16.
 
Sony A77 II APS-C 24.0 6000 40001080/60p24.413.4101382
17.
 
Sony A99 Full Frame 24.0 6000 40001080/60p25.014.0155589
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Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the A77 provides a better video resolution than the E-PL1. It can shoot movie footage at 1080/60p, while the Olympus is limited to 720/30p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A77 has an electronic viewfinder (2359k dots), which can be very helpful when shooting in bright sunlight. In contrast, the E-PL1 relies on live view and the rear LCD for framing. That said, the E-PL1 can be equipped with an optional viewfinder – the VF-2. The adjacent table lists some of the other core features of the Olympus E-PL1 and Sony A77 along with similar information for a selection of comparators.

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Core Features
# image 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-PL1optional n2.7 / 230 fixed n 1/2000s 3.0/s Y Y
2.
 
Sony A772359 Y3.0 / 921 full-flex n 1/8000s 12.0/s Y Y
3.
 
Olympus XZ-2optional n3.0 / 920 tilting Y 1/2000s 5.0/s Y Y
4.
 
Olympus E-P3optional n3.0 / 614 fixed Y 1/4000s 3.0/s Y Y
5.
 
Olympus E-PL2optional n3.0 / 460 fixed n 1/4000s 3.0/s Y Y
6.
 
Olympus E-PL3optional n3.0 / 460 tilting n 1/4000s 5.5/s n Y
7.
 
Olympus E-PM1optional n3.0 / 460 fixed n 1/4000s 5.5/s n Y
8.
 
Olympus E-620optical n2.7 / 230 swivel n 1/4000s 4.0/s Y Y
9.
 
Olympus E-P1none n3.0 / 230 fixed n 1/4000s 3.0/s n Y
10.
 
Olympus E-P2optional n3.0 / 230 fixed n 1/4000s 3.0/s n Y
11.
 
Panasonic GH53680 n3.2 / 1620 swivel Y 1/8000s 12.0/s n Y
12.
 
Panasonic G10202 n3.0 / 460 fixed n 1/4000s 2.6/s Y n
13.
 
Panasonic GF2optional n3.0 / 460 fixed Y 1/4000s 2.6/s Y n
14.
 
Sony A93686 n3.0 / 1440 tilting Y 1/8000s 20.0/s n Y
15.
 
Sony A7 II2400 n3.0 / 1230 tilting n 1/8000s 5.0/s n Y
16.
 
Sony A77 II2359 Y3.0 / 1229 full-flex n 1/8000s 12.0/s Y Y
17.
 
Sony A992359 Y3.0 / 1229 full-flex n 1/8000s 6.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One feature that is present on the A77, but is missing on the E-PL1 is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

The A77 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-PL1 does not have a selfie-screen.

The E-PL1 writes its imaging data to SDHC cards, while the A77 uses SDXC or Memory Stick PRO Duo cards. The A77 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the E-PL1 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-PL1 and Sony Alpha SLT-A77 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Olympus E-PL1Ystereo / ---mini2.0---
2.
 
Sony A77Ystereo / monoY-mini2.0---
3.
 
Olympus XZ-2Ystereo / mono--mini2.0---
4.
 
Olympus E-P3Ystereo / ---mini2.0---
5.
 
Olympus E-PL2Ystereo / ---mini2.0---
6.
 
Olympus E-PL3Ystereo / ---mini2.0---
7.
 
Olympus E-PM1Ystereo / mono--mini2.0---
8.
 
Olympus E-620Y- / ----2.0---
9.
 
Olympus E-P1Ystereo / ---mini2.0---
10.
 
Olympus E-P2Ystereo / ---mini2.0---
11.
 
Panasonic GH5Ystereo / monoYYfull3.1Y-Y
12.
 
Panasonic G10Ymono / ---mini2.0---
13.
 
Panasonic GF2Ystereo / mono--mini2.0---
14.
 
Sony A9Ystereo / monoYYmicro2.0YYY
15.
 
Sony A7 IIYstereo / monoYYmicro2.0YY-
16.
 
Sony A77 IIYstereo / monoY-mini2.0YY-
17.
 
Sony A99Ystereo / monoYYmini2.0---
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It is notable that the A77 has a microphone port, which can help to improve the quality of audio recordings by attaching an external microphone. The E-PL1 does not feature such a mic input.

Studio photographers will appreciate that the Sony A77 (unlike the E-PL1) 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 A77 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the E-PL1 and the A77 have been discontinued, but can regularly be found used on ebay. The E-PL1 was replaced by the Olympus E-PL2, while the A77 was followed by the Sony A77 II. Further information on the features and operation of the E-PL1 and A77 can be found, respectively, in the Olympus E-PL1 Manual (free pdf) or the online Sony A77 Manual.

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Review summary

So what is the bottom line? Which of the two cameras – the Olympus E-PL1 or the Sony A77 – 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 PEN E-PL1:

  • More compact: Is smaller (115x72mm vs 143x104mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 398g or 54 percent) and hence easier to carry around.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • More affordable: Was introduced into a lower priced category (57 percent cheaper at launch).
  • More heavily discounted: Has been on the market for longer (launched in February 2010).

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Advantages of the Sony Alpha SLT-A77:

  • More detail: Has more megapixels (24 vs 12.2MP), which boosts linear resolution by 43%.
  • Better image quality: Scores substantially higher (24 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (2.5 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (3.1 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (0.7 stops ISO advantage).
  • Better video: Provides higher definition movie capture (1080/60p 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.
  • 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 (921k vs 230k 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 1/2000s) to freeze action.
  • Faster burst: Shoots at higher frequency (12 vs 3 flaps/sec) to capture the decisive moment.
  • Longer lasting: Gets more shots (470 versus 290) out of a single battery charge.
  • 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.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • 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 A77 is the clear winner of the contest (21 : 5 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. 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-PL1 05:21 A77

How about other alternatives? Do the specifications of the Olympus E-PL1 and the Sony A77 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR 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 says little about, for example, the shooting experience and imaging performance of the E-PL1 and the A77 in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

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 (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
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-PL1..86/100..69/1004/54.5/5 Feb 2010 599ebay.com
2.
 
Sony A775/591/100..81/100..5/5 Aug 2011 1,399ebay.com
3.
 
Olympus XZ-24/5+....4.5/54.5/5 Sep 2012 599ebay.com
4.
 
Olympus E-P3..83/100..74/1004.5/54.5/5 Jun 2011 799ebay.com
5.
 
Olympus E-PL23/583/100..71/1004.5/54.5/5 Jan 2011 599ebay.com
6.
 
Olympus E-PL33/5+ +..72/1004.5/54/5 Jun 2011 599ebay.com
7.
 
Olympus E-PM1..86/100..71/1004.5/54.5/5 Jun 2011 499ebay.com
8.
 
Olympus E-6203/588/100..72/1004.5/55/5 Feb 2009 699ebay.com
9.
 
Olympus E-P1..+..66/1004/54.5/5 Jun 2009 799ebay.com
10.
 
Olympus E-P23/5+..69/1004/54.5/5 Nov 2009 799ebay.com
11.
 
Panasonic GH54.5/5+ +..85/1004.5/55/5 Jan 2017 1,999ebay.com
12.
 
Panasonic G103/5....70/1004/54/5 Mar 2010 499ebay.com
13.
 
Panasonic GF23/582/100..70/1004.5/54.5/5 Nov 2010 549ebay.com
14.
 
Sony A95/5+ +4.8/589/1005/55/5 Apr 2017 4,499ebay.com
15.
 
Sony A7 II5/5+4/582/1004.5/55/5 Nov 2014 1,999ebay.com
16.
 
Sony A77 II4/5....80/1004.5/55/5 May 2014 1,199ebay.com
17.
 
Sony A995/5....84/1004.5/54.5/5 Sep 2012 2,799ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods 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. 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-PL1 vs Sony A77

    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-PL1 Sony A77
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Micro Four Thirds lenses Sony A mount lenses
    Launch Date February 2010 August 2011
    Launch Price USD 599 USD 1,399
    Sensor Specs Olympus E-PL1 Sony A77
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor APS-C Sensor
    Sensor Size 17.3 x 13.0 mm 23.5 x 15.6 mm
    Sensor Area 224.9 mm2 366.6 mm2
    Sensor Diagonal 21.6 mm 28.2 mm
    Crop Factor 2.0x 1.5x
    Sensor Resolution 12.2 Megapixels 24 Megapixels
    Image Resolution 4032 x 3024 pixels 6000 x 4000 pixels
    Pixel Pitch 4.29 μm 3.91 μm
    Pixel Density 5.42 MP/cm2 6.55 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 720/30p Video 1080/60p Video
    ISO Setting 200 - 3,200 ISO 100 - 16,000 ISO
    ISO Boost no Enhancement 50 - 25,600 ISO
    Image Processor Truepic V BIONZ X
    DXO Sensor Quality (score) 54 78
    DXO Color Depth (bits) 21.5 24.0
    DXO Dynamic Range (EV) 10.1 13.2
    DXO Low Light (ISO) 487 801
    Screen Specs Olympus E-PL1 Sony A77
    Viewfinder Type Viewfinder optional Electronic viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.73x
    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 230k dots 921k dots
    LCD Attachment Fixed screen Fully flexible screen
    Shooting Specs Olympus E-PL1 Sony A77
    Focus System Contrast-detect AF Phase-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/2000s 1/8000s
    Continuous Shooting 3 shutter flaps/s 12 shutter flaps/s
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium SDHC cards MS or SDXC cards
    Single or Dual Card Slots Single card slot Single card slot
    UHS card support no UHS-I
    Connectivity Specs Olympus E-PL1 Sony A77
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Wifi Support no Wifi no Wifi
    Geotagging no internal GPS GPS built-in
    Body Specs Olympus E-PL1 Sony A77
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Olympus BLS-1 Sony NP-FM500H
    Battery Life (CIPA)290 shots per charge470 shots per charge
    Body Dimensions 115 x 72 x 42 mm
    (4.5 x 2.8 x 1.7 in)
    143 x 104 x 81 mm
    (5.6 x 4.1 x 3.2 in)
    Camera Weight 334 g (11.8 oz) 732 g (25.8 oz)
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    Check A77 offers at
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