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Olympus E-620 vs Sony A7S

The Olympus E-620 and the Sony Alpha A7S are two digital cameras that were revealed to the public, respectively, in February 2009 and April 2014. The E-620 is a DSLR, while the A7S is a mirrorless interchangeable lens camera. The cameras are based on a Four Thirds (E-620) and a full frame (A7S) sensor. The Olympus has a resolution of 12.2 megapixels, whereas the Sony provides 12 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
versus
Sony A7S
Olympus E-620   Sony A7S
Digital single lens reflex Mirrorless system camera
Four Thirds lenses Sony E mount lenses
12.2 MP – Four Thirds sensor 12 MP – Full Frame sensor
no Video 1080/60p Video
ISO 100-3,200 ISO 100-102,400 (50 - 409,600)
Optical viewfinder Electronic viewfinder (2400k dots)
2.7" LCD – 230k dots 3.0" LCD – 921k dots
Swivel screen (not touch-sensitive) Tilting screen (no touchscreen)
4 shutter flaps per second 5 shutter flaps per second
In-body stabilizationLens stabilization only
not weather sealedWeathersealed body
500 shots per battery charge380 shots per battery charge
130 x 94 x 60 mm, 521 g 127 x 94 x 48 mm, 489 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus E-620 and the Sony Alpha A7S? 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

The side-by-side display below illustrates the physical size and weight of the Olympus E-620 and the Sony A7S. 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 size dimensions are rounded to the nearest millimeter.

Size Olympus E-620 vs Sony A7S
Compare E-620 versus A7S top
Comparison E-620 or A7S rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7S is somewhat smaller (2 percent) than the Olympus E-620. Moreover, the A7S is markedly lighter (6 percent) than the E-620. It is noteworthy in this context that the A7S is splash and dust-proof, while the E-620 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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Four Thirds Lens Catalog (E-620) and the Sony FE Lens Catalog (A7S). Mirrorless cameras, such as the A7S, 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 A7S can take 380 images on a single charge of its NP-FW50 power pack. The power pack in the A7S can be charged via the USB port, which can be very convenient when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-620 130 mm 94 mm 60 mm 521 g 500 n Feb 2009 699ebay.com
2.
 
Sony A7S 127 mm 94 mm 48 mm 489 g 380 Y Apr 2014 2,499ebay.com
3.
 
Nikon D750 141 mm 113 mm 78 mm 750 g 1230 Y Sep 2014 2,299ebay.com
4.
 
Olympus E-PL1 115 mm 72 mm 42 mm 334 g 290 n Feb 2010 599ebay.com
5.
 
Olympus E-450 130 mm 91 mm 53 mm 440 g 500 n Mar 2009 499ebay.com
6.
 
Olympus E-600 130 mm 94 mm 60 mm 535 g 500 n Aug 2009 449ebay.com
7.
 
Olympus E-P1 121 mm 70 mm 36 mm 355 g 300 n Jun 2009 799ebay.com
8.
 
Olympus E-P2 121 mm 70 mm 36 mm 355 g 300 n Nov 2009 799ebay.com
9.
 
Olympus E-30 142 mm 108 mm 75 mm 701 g 750 n Nov 2008 1,299ebay.com
10.
 
Olympus E-420 130 mm 91 mm 53 mm 440 g 500 n Mar 2008 599ebay.com
11.
 
Olympus E-520 136 mm 92 mm 68 mm 535 g 750 n May 2008 699ebay.com
12.
 
Olympus E-410 130 mm 91 mm 53 mm 435 g 500 n Mar 2007 699ebay.com
13.
 
Olympus E-510 136 mm 92 mm 68 mm 538 g 750 n Mar 2007 799ebay.com
14.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999ebay.com
15.
 
Sony A7 127 mm 94 mm 48 mm 474 g 340 Y Oct 2013 1,699ebay.com
16.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 2,299ebay.com
17.
 
Sony RX1R 113 mm 65 mm 70 mm 482 g 270 n Jun 2013 2,799ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. 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-620 was launched at a markedly lower price (by 72 percent) than the A7S, 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. 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Olympus E-620 features a Four Thirds sensor and the Sony A7S a full frame sensor. The sensor area in the A7S is 280 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-620 has a native 4:3 aspect ratio, while the one in the A7S offers a 3:2 aspect.

Olympus E-620 and Sony A7S sensor measures

Despite having a smaller sensor, the Olympus E-620 offers a higher resolution of 12.2 megapixels, compared with 12 MP of the Sony A7S. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.29μm versus 8.45μm for the A7S). Moreover, it should be noted that the A7S is much more recent (by 5 years and 1 month) than the E-620, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.

The Olympus E-620 has a native sensitivity range from ISO 100 to ISO 3200. The corresponding ISO settings for the Sony Alpha A7S are ISO 100 to ISO 102400, with the possibility to increase the ISO range to 50-409600.

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-620 versus A7S MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). Of the two cameras under consideration, the A7S offers substantially better image quality than the E-620 (overall score 32 points higher). The advantage is based on 2.6 bits higher color depth, 2.9 EV in additional dynamic range, and 2.8 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
1.
 
Olympus E-620 Four Thirds 12.2 4032 3024none21.310.353655
2.
 
Sony A7S Full Frame 12.0 4240 28321080/60p23.913.2370287
3.
 
Nikon D750 Full Frame 24.2 6016 40161080/60p24.814.5295693
4.
 
Olympus E-PL1 Four Thirds 12.2 4032 3024720/30p21.510.148754
5.
 
Olympus E-450 Four Thirds 10.0 3648 2736none21.510.551256
6.
 
Olympus E-600 Four Thirds 12.2 4032 3024none21.510.354155
7.
 
Olympus E-P1 Four Thirds 12.2 4032 3024720/30p21.410.453655
8.
 
Olympus E-P2 Four Thirds 12.2 4032 3024720/30p21.510.450556
9.
 
Olympus E-30 Four Thirds 12.2 4032 3024none21.310.453055
10.
 
Olympus E-420 Four Thirds 10.0 3648 2736none21.510.452756
11.
 
Olympus E-520 Four Thirds 10.0 3648 2736none21.410.454855
12.
 
Olympus E-410 Four Thirds 10.0 3648 2736none21.110.049451
13.
 
Olympus E-510 Four Thirds 10.0 3648 2736none21.210.044252
14.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385
15.
 
Sony A7 Full Frame 24.0 6000 40001080/60p24.814.2224890
16.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695
17.
 
Sony RX1R Full Frame 24.0 6000 40001080/60p25.013.6253791

Many modern cameras cannot only take still pictures, but also record videos. The A7S indeed provides for movie recording, while the E-620 does not. The highest resolution format that the A7S can use is 1080/60p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A7S has an electronic viewfinder (2400k 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 A7S 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 A7S 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 table below summarizes some of the other core capabilities of the Olympus E-620 and Sony A7S in connection with corresponding information for a sample of similar cameras.

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Core Features
    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-620optical n2.7 / 230 swivel n 1/4000s 4.0/s Y Y
2.
 
Sony A7S2400 n3.0 / 921 tilting n 1/8000s 5.0/s n n
3.
 
Nikon D750optical Y3.2 / 1229 tilting n 1/4000s 6.0/s Y n
4.
 
Olympus E-PL1optional n2.7 / 230 fixed n 1/2000s 3.0/s Y Y
5.
 
Olympus E-450optical n2.7 / 215 fixed n 1/4000s 3.5/s Y n
6.
 
Olympus E-600optical n2.7 / 230 swivel n 1/4000s 4.0/s Y Y
7.
 
Olympus E-P1none n3.0 / 230 fixed n 1/4000s 3.0/s n Y
8.
 
Olympus E-P2optional n3.0 / 230 fixed n 1/4000s 3.0/s n Y
9.
 
Olympus E-30optical Y2.7 / 230 swivel n 1/8000s 5.0/s Y Y
10.
 
Olympus E-420optical n2.7 / 215 fixed n 1/4000s 3.5/s Y n
11.
 
Olympus E-520optical n2.7 / 215 fixed n 1/4000s 3.5/s Y Y
12.
 
Olympus E-410optical n2.5 / 215 fixed n 1/4000s 3.0/s Y n
13.
 
Olympus E-510optical n2.5 / 215 fixed n 1/4000s 3.0/s Y Y
14.
 
Sony A7S II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
15.
 
Sony A72400 n3.0 / 1230 tilting n 1/8000s 5.0/s n n
16.
 
Sony A7R2400 n3.0 / 1230 tilting n 1/8000s 4.0/s n n
17.
 
Sony RX1Roptional n3.0 / 1229 fixed n 1/4000s 5.0/s Y n
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The E-620 has one, while the A7S does not. While the built-in flash of the E-620 is not very powerful, it can at times be useful as a fill-in light.

The E-620 has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the A7S does not have a selfie-screen.

The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the A7S 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 E-620 writes its imaging data to Compact Flash or xD Picture cards, while the A7S uses SDXC or Memory Stick PRO Duo cards. The E-620 features dual card slots, which can be very useful in case a memory card fails. In contrast, the A7S only has one slot.

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-620 and Sony Alpha A7S 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
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Olympus E-620Y- / ----2.0---
2.
 
Sony A7SYstereo / monoYYmicro2.0YY-
3.
 
Nikon D750Ystereo / monoYYmini2.0Y--
4.
 
Olympus E-PL1Ystereo / ---mini2.0---
5.
 
Olympus E-450Y- / ----2.0---
6.
 
Olympus E-600Y- / ----2.0---
7.
 
Olympus E-P1Ystereo / ---mini2.0---
8.
 
Olympus E-P2Ystereo / ---mini2.0---
9.
 
Olympus E-30Y- / ----2.0---
10.
 
Olympus E-420Y- / ----2.0---
11.
 
Olympus E-520Y- / ----2.0---
12.
 
Olympus E-410Y- / ----2.0---
13.
 
Olympus E-510Y- / ----2.0---
14.
 
Sony A7S IIYstereo / monoYYmicro2.0YY-
15.
 
Sony A7Ystereo / monoYYmicro2.0YY-
16.
 
Sony A7RYstereo / monoYYmicro2.0YY-
17.
 
Sony RX1RYstereo / monoY-mini2.0---

It is notable that the A7S offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the E-620 does not provide wifi capability.

Both the E-620 and the A7S have been discontinued, but can regularly be found used on ebay. The E-620 was replaced by the Olympus E-600, while the A7S was followed by the Sony A7S II. Further information on the features and operation of the E-620 and A7S can be found, respectively, in the Olympus E-620 Manual (free pdf) or the online Sony A7S Manual.

Review summary

So what conclusions can be drawn? Which of the two cameras – the Olympus E-620 or the Sony A7S – 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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Advantages of the Olympus E-620:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • More flexible LCD: Has a swivel 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.
  • Longer lasting: Can take more shots (500 versus 380) on a single battery charge.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • 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 category (72 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in February 2009).

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Reasons to prefer the Sony Alpha A7S:

  • Better image quality: Scores substantially higher (32 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (2.6 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (2.9 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (2.8 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 0.48x).
  • 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 (921k vs 230k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (5 vs 4 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • 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.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More modern: Reflects 5 years and 1 month of technical progress since the E-620 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the A7S is the clear winner of the contest (19 : 9 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional 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 09:19 A7S

How about other alternatives? Do the specifications of the Olympus E-620 and the Sony A7S 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 incomplete and does no justice, for example, to the way the E-620 or the A7S 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 where reviews by experts come in. 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
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-6203/588/100..72/1004.5/55/5 Feb 2009 699ebay.com
2.
 
Sony A7S4/5....86/1004.5/55/5 Apr 2014 2,499ebay.com
3.
 
Nikon D7505/5+ +4/590/1004.5/54.5/5 Sep 2014 2,299ebay.com
4.
 
Olympus E-PL1..86/100..69/1004/54.5/5 Feb 2010 599ebay.com
5.
 
Olympus E-450........4/54/5 Mar 2009 499ebay.com
6.
 
Olympus E-600..........4.5/5 Aug 2009 449ebay.com
7.
 
Olympus E-P1..+..66/1004/54.5/5 Jun 2009 799ebay.com
8.
 
Olympus E-P23/5+..69/1004/54.5/5 Nov 2009 799ebay.com
9.
 
Olympus E-30......71/1004.5/54/5 Nov 2008 1,299ebay.com
10.
 
Olympus E-420..85/100..+ +4/54.5/5 Mar 2008 599ebay.com
11.
 
Olympus E-520..87/100..+ +4.5/54.5/5 May 2008 699ebay.com
12.
 
Olympus E-410..86/100..+ +4/54.5/5 Mar 2007 699ebay.com
13.
 
Olympus E-510..89/100..+ +3.5/54.5/5 Mar 2007 799ebay.com
14.
 
Sony A7S II5/5+....4.5/55/5 Sep 2015 2,999ebay.com
15.
 
Sony A75/5+ +..80/1005/55/5 Oct 2013 1,699ebay.com
16.
 
Sony A7R5/5+ +..82/1004.5/55/5 Oct 2013 2,299ebay.com
17.
 
Sony RX1R5/5......4/54.5/5 Jun 2013 2,799ebay.com
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated 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 comparisons of ratings among very different cameras or across long time periods have little meaning. 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. 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 Sony A7S

    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 Sony A7S
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Four Thirds lenses Sony E mount lenses
    Launch Date February 2009 April 2014
    Launch Price USD 699 USD 2,499
    Sensor Specs Olympus E-620 Sony A7S
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor Full Frame Sensor
    Sensor Size 17.3 x 13.0 mm 35.8 x 23.9 mm
    Sensor Area 224.9 mm2 855.62 mm2
    Sensor Diagonal 21.6 mm 43 mm
    Crop Factor 2.0x 1.0x
    Sensor Resolution 12.2 Megapixels 12 Megapixels
    Image Resolution 4032 x 3024 pixels 4240 x 2832 pixels
    Pixel Pitch 4.29 μm 8.45 μm
    Pixel Density 5.42 MP/cm2 1.40 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 1080/60p Video
    ISO Setting 100 - 3,200 ISO 100 - 102,400 ISO
    ISO Boost no Enhancement 50 - 409,600 ISO
    Image Processor TruePic III+ BIONZ X
    DXO Sensor Quality (score) 55 87
    DXO Color Depth (bits) 21.3 23.9
    DXO Dynamic Range (EV) 10.3 13.2
    DXO Low Light (ISO) 536 3702
    Screen Specs Olympus E-620 Sony A7S
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.48x 0.71x
    Viewfinder Resolution 2400k dots
    LCD Framing Live View Live View
    Rear LCD Size 2.7inch 3.0inch
    LCD Resolution 230k dots 921k dots
    LCD Attachment Swivel screen Tilting screen
    Shooting Specs Olympus E-620 Sony A7S
    Focus System Phase-detect AF Contrast-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 4 shutter flaps/s 5 shutter flaps/s
    Electronic Shutterno E-ShutterYES
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium CF or XD cards MS or SDXC cards
    Single or Dual Card Slots Dual card slots Single card slot
    Connectivity Specs Olympus E-620 Sony A7S
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Body Specs Olympus E-620 Sony A7S
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type BLS-1 NP-FW50
    Battery Life (CIPA)500 shots per charge380 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 130 x 94 x 60 mm
    (5.1 x 3.7 x 2.4 in)
    127 x 94 x 48 mm
    (5.0 x 3.7 x 1.9 in)
    Camera Weight 521 g (18.4 oz) 489 g (17.2 oz)
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