A potelyt.com – Photography & Imaging Resources
ad

When you use links on apotelyt.com to buy products,
the site may earn a commission.

PW

Sony A7 III vs Olympus E-620

The Sony Alpha A7 III and the Olympus E-620 are two digital cameras that were revealed to the public, respectively, in February 2018 and February 2009. The A7 III is a mirrorless interchangeable lens camera, while the E-620 is a DSLR. The cameras are based on a full frame (A7 III) and a Four Thirds (E-620) sensor. The Sony has a resolution of 24 megapixels, whereas the Olympus provides 12.2 MP.

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

Headline Specifications
Sony A7 III
versus
Olympus E-620
Sony A7 III   Olympus E-620
Mirrorless system camera Digital single lens reflex
Sony E mount lenses Four Thirds lenses
24 MP – Full Frame sensor 12.2 MP – Four Thirds sensor
4K/30p Video no Video
ISO 100-51,200 (50 - 204,800) ISO 100-3,200
Electronic viewfinder (2359k dots) Optical viewfinder
3.0" LCD – 922k dots 2.7" LCD – 230k dots
Tilting touchscreen Swivel screen (not touch-sensitive)
10 shutter flaps per second 4 shutter flaps per second
In-body stabilizationIn-body stabilization
Weathersealed bodynot weather sealed
610 shots per battery charge500 shots per battery charge
127 x 96 x 74 mm, 650 g 130 x 94 x 60 mm, 521 g
logo
Check A7 III price at
amazon.com
logo
Check E-620 offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Alpha A7 III and the Olympus E-620? 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.

ad

Body comparison

An illustration of the physical size and weight of the Sony A7 III and the Olympus E-620 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter.

Size Sony A7 III vs Olympus E-620
Compare A7 III versus E-620 top
Comparison A7 III or E-620 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7 III and the Olympus E-620 are of equal size. However, the E-620 is markedly lighter (20 percent) than the A7 III. It is worth mentioning in this context that the A7 III is splash and dust resistant, 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 Sony FE Lens Catalog (A7 III) and the Four Thirds Lens Catalog (E-620). Mirrorless cameras, such as the Sony A7 III, have moreover the advantage that they have a relatively short flange to focal plane distance and can thus use many lenses from other systems via adapters.

Concerning battery life, the A7 III gets 610 shots out of its Sony NP-FZ100 battery, while the E-620 can take 500 images on a single charge of its Olympus BLS-1 power pack. The power pack in the A7 III can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.

scroll hint
Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Sony A7 III 127 mm 96 mm 74 mm 650 g 610 Y Feb 2018 1,999 amazon.com
2.
 
Olympus E-620 130 mm 94 mm 60 mm 521 g 500 n Feb 2009 699ebay.com
3.
 
Canon 6D Mark II 144 mm 111 mm 75 mm 765 g 1200 Y Jun 2017 1,999 amazon.com
4.
 
Nikon Z6 134 mm 101 mm 67 mm 675 g 310 Y Aug 2018 1,999ebay.com
5.
 
Olympus E-410 130 mm 91 mm 53 mm 435 g 500 n Mar 2007 699ebay.com
6.
 
Olympus E-420 130 mm 91 mm 53 mm 440 g 500 n Mar 2008 599ebay.com
7.
 
Olympus E-510 136 mm 92 mm 68 mm 538 g 750 n Mar 2007 799ebay.com
8.
 
Olympus E-520 136 mm 92 mm 68 mm 535 g 750 n May 2008 699ebay.com
9.
 
Olympus E-600 130 mm 94 mm 60 mm 535 g 500 n Aug 2009 449ebay.com
10.
 
Sony A7 II 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999ebay.com
11.
 
Sony A7 IV 131 mm 96 mm 80 mm 659 g 580 Y Oct 2021 2,499 amazon.com
12.
 
Sony A7C 124 mm 71 mm 60 mm 509 g 740 Y Sep 2020 1,799 amazon.com
13.
 
Sony A7R III 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199ebay.com
14.
 
Sony A7R IIIA 127 mm 96 mm 74 mm 650 g 650 Y Apr 2021 3,199 amazon.com
15.
 
Sony A7R IV 129 mm 96 mm 78 mm 665 g 670 Y Jul 2019 3,499ebay.com
16.
 
Sony A9 127 mm 96 mm 63 mm 673 g 650 Y Apr 2017 4,499ebay.com
17.
 
Sony A9 II 129 mm 96 mm 76 mm 678 g 690 Y Oct 2019 4,499 amazon.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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The E-620 was launched at a markedly lower price (by 65 percent) than the A7 III, 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.

Sensor comparison

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. A large sensor will 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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to 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 Sony A7 III features a full frame sensor and the Olympus E-620 a Four Thirds sensor. The sensor area in the E-620 is 73 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 2.0. The sensor in the A7 III has a native 3:2 aspect ratio, while the one in the E-620 offers a 4:3 aspect.

Sony A7 III and Olympus E-620 sensor measures

With 24MP, the A7 III offers a higher resolution than the E-620 (12.2MP), but the A7 III nevertheless has larger individual pixels (pixel pitch of 5.94μm versus 4.29μm for the E-620) due to its larger sensor. Moreover, the A7 III is a much more recent model (by 9 years) 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 pixels.

The resolution advantage of the Sony A7 III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7 III 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-620 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 A7 III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Sony Alpha A7 III has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 50-204800. The corresponding ISO settings for the Olympus E-620 are ISO 100 to ISO 3200 (no boost).

In terms of underlying technology, the A7 III is build around a BSI-CMOS sensor, while the E-620 uses a CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

A7 III versus E-620 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 review, the A7 III provides substantially higher image quality than the E-620, with an overall score that is 41 points higher. This advantage is based on 3.7 bits higher color depth, 4.4 EV in additional dynamic range, and 2.8 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.

scroll hint
Sensor Characteristics
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Sony A7 III Full Frame 24.0 6000 40004K/30p25.014.7373096
2.
 
Olympus E-620 Four Thirds 12.2 4032 3024none21.310.353655
3.
 
Canon 6D Mark II Full Frame 26.0 6240 41601080/60p24.411.9286285
4.
 
Nikon Z6 Full Frame 24.3 6048 40244K/30p25.314.3329995
5.
 
Olympus E-410 Four Thirds 10.0 3648 2736none21.110.049451
6.
 
Olympus E-420 Four Thirds 10.0 3648 2736none21.510.452756
7.
 
Olympus E-510 Four Thirds 10.0 3648 2736none21.210.044252
8.
 
Olympus E-520 Four Thirds 10.0 3648 2736none21.410.454855
9.
 
Olympus E-600 Four Thirds 12.2 4032 3024none21.510.354155
10.
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990
11.
 
Sony A7 IV Full Frame 32.7 7008 46724K/60p25.414.7337997
12.
 
Sony A7C Full Frame 24.0 6000 40004K/30p25.014.7340795
13.
 
Sony A7R III Full Frame 42.2 7952 53044K/30p26.014.73523100
14.
 
Sony A7R IIIA Full Frame 42.2 7952 53044K/30p26.014.73523100
15.
 
Sony A7R IV Full Frame 60.2 9504 63364K/30p26.014.8334499
16.
 
Sony A9 Full Frame 24.0 6000 40004K/30p24.913.3351792
17.
 
Sony A9 II Full Frame 24.0 6000 40004K/30p25.014.0343493

Many modern cameras cannot only take still pictures, but also record videos. The A7 III indeed provides movie recording capabilities, while the E-620 does not. The highest resolution format that the A7 III can use is 4K/30p.

ad

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the A7 III has an electronic viewfinder (2359k 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 A7 III 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 A7 III has a higher magnification (0.78x vs 0.48x), 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 Sony A7 III, the Olympus E-620, and comparable cameras.

scroll hint
Core Features
  empty Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Sony A7 III2359 n3.0 / 922 tilting Y 1/8000s 10.0/s n Y
2.
 
Olympus E-620optical n2.7 / 230 swivel n 1/4000s 4.0/s Y Y
3.
 
Canon 6D Mark IIoptical Y3.0 / 1040 swivel Y 1/4000s 6.5/s n n
4.
 
Nikon Z63690 Y3.2 / 2100 tilting Y 1/8000s 12.0/s n Y
5.
 
Olympus E-410optical n2.5 / 215 fixed n 1/4000s 3.0/s Y n
6.
 
Olympus E-420optical n2.7 / 215 fixed n 1/4000s 3.5/s Y n
7.
 
Olympus E-510optical n2.5 / 215 fixed n 1/4000s 3.0/s Y Y
8.
 
Olympus E-520optical n2.7 / 215 fixed n 1/4000s 3.5/s Y Y
9.
 
Olympus E-600optical n2.7 / 230 swivel n 1/4000s 4.0/s Y Y
10.
 
Sony A7 II2400 n3.0 / 1230 tilting n 1/8000s 5.0/s n Y
11.
 
Sony A7 IV3686 n3.0 / 1037 swivel Y 1/8000s 10.0/s n Y
12.
 
Sony A7C2360 n3.0 / 922 swivel Y 1/4000s 10.0/s n Y
13.
 
Sony A7R III3686 n3.0 / 1440 tilting Y 1/8000s 10.0/s n Y
14.
 
Sony A7R IIIA3686 n3.0 / 2340 tilting Y 1/8000s 10.0/s n Y
15.
 
Sony A7R IV5760 n3.0 / 1440 tilting Y 1/8000s 10.0/s n Y
16.
 
Sony A93686 n3.0 / 1440 tilting Y 1/8000s 20.0/s n Y
17.
 
Sony A9 II3686 n3.0 / 1440 tilting Y 1/8000s 20.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The A7 III has a touchscreen, while the E-620 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The E-620 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 A7 III 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 A7 III 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 Sony A7 III has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.

The A7 III writes its imaging data to SDXC or Memory Stick PRO Duo cards, while the E-620 uses Compact Flash or xD Picture cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.

ad

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 Sony Alpha A7 III and Olympus E-620 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

scroll hint
Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Sony A7 IIIYstereo / monoYYmicro3.1YYY
2.
 
Olympus E-620Y- / ----2.0---
3.
 
Canon 6D Mark IIYstereo / monoY-mini2.0YYY
4.
 
Nikon Z6Ystereo / monoYYmicro3.1Y-Y
5.
 
Olympus E-410Y- / ----2.0---
6.
 
Olympus E-420Y- / ----2.0---
7.
 
Olympus E-510Y- / ----2.0---
8.
 
Olympus E-520Y- / ----2.0---
9.
 
Olympus E-600Y- / ----2.0---
10.
 
Sony A7 IIYstereo / monoYYmicro2.0YY-
11.
 
Sony A7 IVYstereo / monoYYfull3.2Y-Y
12.
 
Sony A7CYstereo / monoYYmicro3.2YYY
13.
 
Sony A7R IIIYstereo / monoYYmicro3.1YYY
14.
 
Sony A7R IIIAYstereo / monoYYmicro3.2YYY
15.
 
Sony A7R IVYstereo / monoYYmicro3.1YYY
16.
 
Sony A9Ystereo / monoYYmicro2.0YYY
17.
 
Sony A9 IIYstereo / monoYYmicro3.1YYY

It is notable that the A7 III offers wifi support, while the E-620 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

The A7 III is a recent model that features in the current product line-up of Sony. In contrast, the E-620 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the E-620 was succeeded by the Olympus E-600. Further information on the features and operation of the A7 III and E-620 can be found, respectively, in the Sony A7 III Manual (free pdf) or the online Olympus E-620 Manual.

ad

Review summary

So how do things add up? Is the Sony A7 III better than the Olympus E-620 or vice versa? Below is a summary of the relative strengths of each of the two contestants.

ilogo

Arguments in favor of the Sony Alpha A7 III:

  • More detail: Offers more megapixels (24 vs 12.2MP) with a 43% higher linear resolution.
  • Better image quality: Scores substantially higher (41 points) in the DXO overall assessment.
  • Richer colors: Generates images with noticeably better colors (3.7 bits more color depth).
  • More dynamic range: Captures a larger spectrum of light and dark details (4.4 EV of extra DR).
  • Better low-light sensitivity: Requires less light for good images (2.8 stops ISO advantage).
  • Broader imaging potential: Can record not only still images but also 4K/30p movies.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • 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 (0.78x 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 (922k vs 230k dots).
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (10 vs 4 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Can take more shots (610 versus 500) on a single battery charge.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
  • 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.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • More modern: Reflects 9 years of technical progress since the E-620 launch.

ilogo

Reasons to prefer 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.
  • Less heavy: Has a lower weight (by 129g or 20 percent) and is thus easier to take along.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • More affordable: Was introduced into a lower priced category (65 percent cheaper at launch).
  • More heavily discounted: Has been around for much longer (launched in February 2009).

If the number of relative strengths (bullet points above) is taken as a guide, the A7 III is the clear winner of the match-up (26 : 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 wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

A7 III 26:07 E-620

How about other alternatives? Do the specifications of the Sony A7 III and the Olympus E-620 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 technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the A7 III and the E-620 in practical situations. 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 hands-on reviews by experts 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.

scroll hint
Expert Camera Reviews
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Sony A7 III..+ +4.5/589/1005/55/5 Feb 2018 1,999 amazon.com
2.
 
Olympus E-6203/588/100..72/1004.5/55/5 Feb 2009 699ebay.com
3.
 
Canon 6D Mark II4/5+4/580/1004.5/54/5 Jun 2017 1,999 amazon.com
4.
 
Nikon Z65/5..5/589/1004.5/55/5 Aug 2018 1,999ebay.com
5.
 
Olympus E-410..86/100..+ +4/54.5/5 Mar 2007 699ebay.com
6.
 
Olympus E-420..85/100..+ +4/54.5/5 Mar 2008 599ebay.com
7.
 
Olympus E-510..89/100..+ +3.5/54.5/5 Mar 2007 799ebay.com
8.
 
Olympus E-520..87/100..+ +4.5/54.5/5 May 2008 699ebay.com
9.
 
Olympus E-600..........4.5/5 Aug 2009 449ebay.com
10.
 
Sony A7 II5/5+4/582/1004.5/55/5 Nov 2014 1,999ebay.com
11.
 
Sony A7 IV5/5+ +4.5/589/1004.5/54.5/5 Oct 2021 2,499 amazon.com
12.
 
Sony A7C3.5/5..3.5/586/1004/54/5 Sep 2020 1,799 amazon.com
13.
 
Sony A7R III..+ +4/590/1004.5/55/5 Oct 2017 3,199ebay.com
14.
 
Sony A7R IIIA..+ +4/590/1004.5/55/5 Apr 2021 3,199 amazon.com
15.
 
Sony A7R IV5/5+4.5/591/1004.5/55/5 Jul 2019 3,499ebay.com
16.
 
Sony A95/5+ +4.8/589/1005/55/5 Apr 2017 4,499ebay.com
17.
 
Sony A9 II....5/590/1005/55/5 Oct 2019 4,499 amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

logo
Check A7 III price at
amazon.com
logo
Check E-620 offers at
ebay.com

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 make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

~
    loader
    ad

    Specifications: Sony A7 III vs Olympus E-620

    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 Sony A7 III Olympus E-620
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Sony E mount lenses Four Thirds lenses
    Launch Date February 2018 February 2009
    Launch Price USD 1,999 USD 699
    Sensor Specs Sony A7 III Olympus E-620
    Sensor Technology BSI-CMOS CMOS
    Sensor Format Full Frame Sensor Four Thirds Sensor
    Sensor Size 35.6 x 23.8 mm 17.3 x 13.0 mm
    Sensor Area 847.28 mm2 224.9 mm2
    Sensor Diagonal 42.8 mm 21.6 mm
    Crop Factor 1.0x 2.0x
    Sensor Resolution 24 Megapixels 12.2 Megapixels
    Image Resolution 6000 x 4000 pixels 4032 x 3024 pixels
    Pixel Pitch 5.94 μm 4.29 μm
    Pixel Density 2.83 MP/cm2 5.42 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 4K/30p Video no Video
    ISO Setting 100 - 51,200 ISO 100 - 3,200 ISO
    ISO Boost 50 - 204,800 ISO no Enhancement
    Image Processor BIONZ X TruePic III+
    DXO Sensor Quality (score) 96 55
    DXO Color Depth (bits) 25.0 21.3
    DXO Dynamic Range (EV) 14.7 10.3
    DXO Low Light (ISO) 3730 536
    Screen Specs Sony A7 III Olympus E-620
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 95%
    Viewfinder Magnification 0.78x 0.48x
    Viewfinder Resolution 2359k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 2.7inch
    LCD Resolution 922k dots 230k dots
    LCD Attachment Tilting screen Swivel screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Sony A7 III Olympus E-620
    Focus System On-Sensor Phase-detect Phase-detect AF
    Manual Focusing AidFocus Peakingno Peaking Feature
    Continuous Shooting 10 shutter flaps/s 4 shutter flaps/s
    Electronic ShutterYESno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash no On-Board Flash Built-in Flash
    Storage Medium MS or SDXC cards CF or XD cards
    Single or Dual Card Slots Dual card slots Dual card slots
    Connectivity Specs Sony A7 III Olympus E-620
    External Flash Hotshoe Hotshoe
    USB Connector USB 3.1 USB 2.0
    HDMI Port micro HDMI no HDMI
    Microphone Port External MIC port no MIC socket
    Headphone Socket Headphone port no Headphone port
    Wifi Support Wifi built-in no Wifi
    Near-Field Communication NFC built-in no NFC
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Sony A7 III Olympus E-620
    Environmental SealingWeathersealed bodynot weather sealed
    Battery Type Sony NP-FZ100 Olympus BLS-1
    Battery Life (CIPA)610 shots per charge500 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 127 x 96 x 74 mm
    (5.0 x 3.8 x 2.9 in)
    130 x 94 x 60 mm
    (5.1 x 3.7 x 2.4 in)
    Camera Weight 650 g (22.9 oz) 521 g (18.4 oz)
    logo
    Check A7 III price at
    amazon.com
    logo
    Check E-620 offers at
    ebay.com

    Did you notice an error on this page? If so, please get in touch, so that we can correct the information.

    You are here Home  »  CAM-parator  »  Sony A7 III vs Olympus E-620