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Olympus E-1 vs Sony A7 II

The Olympus E-1 and the Sony Alpha A7 II are two digital cameras that were revealed to the public, respectively, in June 2003 and November 2014. The E-1 is a DSLR, while the A7 II is a mirrorless interchangeable lens camera. The cameras are based on a Four Thirds (E-1) and a full frame (A7 II) sensor. The Olympus has a resolution of 4.9 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-1   Sony A7 II
Olympus E-1 Sony A7 II
Digital single lens reflex Mirrorless system camera
Four Thirds lenses Sony E mount lenses
4.9 MP, Four Thirds Sensor 24 MP, Full Frame Sensor
no Video 1080/60p Video
ISO 100-800 (100-3200) ISO 100-25600 (50-51200)
Optical viewfinder Electronic viewfinder (2400k dots)
1.8" LCD, 134k dots 3.0" LCD, 1230k dots
Fixed screen (not touch-sensitive) Tilting screen (not touch-sensitive)
3 shutter flaps per second 5 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodyWeathersealed body
750 shots per battery charge350 shots per battery charge
141 x 104 x 81 mm, 738 g 127 x 96 x 60 mm, 599 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus E-1 and the Sony Alpha A7 II? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

Body comparison: Olympus E-1 vs Sony A7 II

An illustration of the physical size and weight of the Olympus E-1 and the Sony A7 II 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 dimensions are rounded to the nearest millimeter.

Size Olympus E-1 vs Sony A7 II
Compare E-1 versus A7 II top
Comparison E-1 or A7 II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7 II is notably smaller (17 percent) than the Olympus E-1. Moreover, the A7 II is markedly lighter (19 percent) than the E-1. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

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-1) and the Sony FE Lens Catalog (A7 II). Mirrorless cameras, such as the A7 II, 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-1 gets 750 shots out of its BLM-1 battery, while the A7 II can take 350 images on a single charge of its NP-FW50 power pack. The power pack in the A7 II can be charged via the USB port, which can be very convenient when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Olympus E-1» 5.6 in 4.1 in 3.2 in 26.0 oz 750 Y Jun 2003 1,699- i Olympus E-1
 
Sony A7 II« 5.0 in 3.8 in 2.4 in 21.1 oz 350 Y Nov 2014 1,999- i Sony A7 II
 
Canon 6D Mark II« » 5.7 in 4.4 in 3.0 in 27.0 oz 1200 Y Jun 2017 1,999 i i Canon 6D Mark II
 
Canon 7D« » 5.8 in 4.4 in 2.9 in 30.3 oz 800 Y Sep 2009 1,699- i Canon 7D
 
Leica Digilux 3« » 5.7 in 3.4 in 3.0 in 21.4 oz 750 n Sep 2006 1,499- i Leica Digilux 3
 
Nikon D500« » 5.8 in 4.5 in 3.2 in 30.3 oz 1240 Y Jan 2016 1,999 i i Nikon D500
 
Nikon D610« » 5.6 in 4.4 in 3.2 in 30.0 oz 900 Y Oct 2013 1,999 i i Nikon D610
 
Nikon D7000« » 5.2 in 4.1 in 3.0 in 27.5 oz 1050 Y Sep 2010 1,499- i Nikon D7000
 
Olympus E-5« » 5.6 in 4.6 in 3.0 in 30.8 oz 750 Y Sep 2010 1,699- i Olympus E-5
 
Olympus E-3« » 5.6 in 4.6 in 3.0 in 30.9 oz 750 Y Oct 2007 1,699- i Olympus E-3
 
Olympus E-330« » 5.5 in 3.4 in 2.8 in 22.5 oz 750 n Jan 2006 999- i Olympus E-330
 
Olympus E-300« » 5.8 in 3.3 in 2.5 in 22.0 oz 750 n Sep 2004 799- i Olympus E-300
 
Sony A7 III« » 5.0 in 3.8 in 2.9 in 22.9 oz 610 Y Feb 2018 1,999 i i Sony A7 III
 
Sony A7R II« » 5.0 in 3.8 in 2.4 in 22.0 oz 290 Y Jun 2015 3,199- i Sony A7R II
 
Sony A7S II« » 5.0 in 3.8 in 2.4 in 22.1 oz 370 Y Sep 2015 2,999 i i Sony A7S II
 
Sony A7« » 5.0 in 3.7 in 1.9 in 16.7 oz 340 Y Oct 2013 1,699- i Sony A7
 
Sony A7R« » 5.0 in 3.7 in 1.9 in 16.4 oz 340 Y Oct 2013 2,299- i Sony A7R
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. The 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-1 was launched at a somewhat lower price (by 15 percent) than the A7 II, which makes it more attractive for photographers on a tight budget. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.

 

Sensor comparison: Olympus E-1 vs Sony A7 II

The size of the imaging sensor is a crucial determinant 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. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Olympus E-1 features a Four Thirds sensor and the Sony A7 II a full frame sensor. The sensor area in the A7 II 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-1 has a native 4:3 aspect ratio, while the one in the A7 II offers a 3:2 aspect.

Olympus E-1 and Sony A7 II sensor measures

With 24MP, the A7 II offers a higher resolution than the E-1 (4.9MP), but the A7 II has smaller individual pixels (pixel pitch of 5.97μm versus 6.78μm for the E-1). Yet, the A7 II is a much more recent model (by 11 years and 4 months) than the E-1, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units.

The resolution advantage of the Sony A7 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7 II for good quality output (200 dots per inch) amounts to 30 x 20 inch or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inch or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inch or 50.8 x 33.9 cm. The corresponding values for the Olympus E-1 are 12.8 x 9.6 inch or 32.5 x 24.4 cm for good quality, 10.2 x 7.7 inch or 26 x 19.5 cm for very good quality, and 8.5 x 6.4 inch or 21.7 x 16.3 cm for excellent quality prints.

The A7 II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Olympus E-1 has a native sensitivity range from ISO 100 to ISO 800, which can be extended to ISO 100-3200. The corresponding ISO settings for the Sony Alpha A7 II are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-51200.

E-1 versus A7 II MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Olympus E-1» Four Thirds 4.9 2560 1920-----Olympus E-1
 
Sony A7 II« Full Frame 24.0 6000 40001080/60p24.913.6244990Sony A7 II
 
Canon 6D Mark II« » Full Frame 26.0 6240 41601080/60p24.411.9286285Canon 6D Mark II
 
Canon 7D« » APS-C 17.9 5184 34561080/30p22.011.785466Canon 7D
 
Leica Digilux 3« » Four Thirds 7.4 3136 2352-----Leica Digilux 3
 
Nikon D500« » APS-C 20.7 5568 37124K/30p24.014.0132483Nikon D500
 
Nikon D610« » Full Frame 24.2 6016 40161080/30p25.114.4292594Nikon D610
 
Nikon D7000« » APS-C 16.1 4928 326410800/24p23.513.9116780Nikon D7000
 
Olympus E-5« » Four Thirds 12.2 4032 3024720/30p21.610.551956Olympus E-5
 
Olympus E-3« » Four Thirds 10.0 3648 2736-21.610.557156Olympus E-3
 
Olympus E-330« » Four Thirds 7.4 3136 2352-----Olympus E-330
 
Olympus E-300« » Four Thirds 8.0 3264 2448-----Olympus E-300
 
Sony A7 III« » Full Frame 24.0 6000 40004K/30p25.014.7373096Sony A7 III
 
Sony A7R II« » Full Frame 42.2 7952 53044K/30p26.013.9343498Sony A7R II
 
Sony A7S II« » Full Frame 12.0 4240 28324K/30p23.613.3299385Sony A7S II
 
Sony A7« » Full Frame 24.0 6000 40001080/60p24.814.2224890Sony A7
 
Sony A7R« » Full Frame 36.2 7360 49121080/60p25.614.1274695Sony A7R

Many modern cameras are not only capable of taking still images, but can also record movies. The A7 II indeed provides for movie recording, while the E-1 does not. The highest resolution format that the A7 II can use is 1080/60p.

 

Feature comparison: Olympus E-1 vs Sony A7 II

Beyond body and sensor, cameras can and do differ across a range of features. For example, the A7 II has an electronic viewfinder (2400k dots), while the E-1 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 viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the A7 II has a higher magnification than the one of the E-1 (0.71x vs 0.48x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Olympus E-1 and Sony A7 II along with similar information for a selection of comparators.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
 
Olympus E-1»optical Y 1.8 134 fixed n 1/4000s 3.0 n n Olympus E-1
 
Sony A7 II«2400 n 3.0 1230 tilting n 1/8000s 5.0 n Y Sony A7 II
 
Canon 6D Mark II« »optical Y 3.0 1040 swivel Y 1/4000s 6.5 n n Canon 6D Mark II
 
Canon 7D« »optical Y 3.0 920 fixed n 1/8000s 8.0 Y n Canon 7D
 
Leica Digilux 3« »optical n 2.5 207 fixed n 1/4000s 3.0 Y n Leica Digilux 3
 
Nikon D500« »optical Y 3.2 2359 tilting Y 1/8000s 10.0 n n Nikon D500
 
Nikon D610« »optical Y 3.2 921 fixed n 1/4000s 6.0 Y n Nikon D610
 
Nikon D7000« »optical Y 3.0 921 fixed n 1/8000s 6.0 Y n Nikon D7000
 
Olympus E-5« »optical Y 3.0 920 swivel n 1/8000s 5.0 Y Y Olympus E-5
 
Olympus E-3« »optical Y 2.5 230 swivel n 1/8000s 5.0 Y Y Olympus E-3
 
Olympus E-330« »optical n 2.5 215 tilting n 1/4000s 3.0 Y n Olympus E-330
 
Olympus E-300« »optical n 1.8 134 fixed n 1/4000s 2.5 Y n Olympus E-300
 
Sony A7 III« »2359 n 3.0 922 tilting Y 1/8000s 10.0 n Y Sony A7 III
 
Sony A7R II« »2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y Sony A7R II
 
Sony A7S II« »2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y Sony A7S II
 
Sony A7« »2400 n 3.0 1230 tilting n 1/8000s 5.0 n n Sony A7
 
Sony A7R« »2400 n 3.0 1230 tilting n 1/8000s 4.0 n n Sony A7R

One feature that is present on the E-1, but is missing on the A7 II 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 E-1 writes its imaging data to Compact Flash or xD Picture cards, while the A7 II uses SDXC or Memory Stick PRO Duo cards. The E-1 features dual card slots, which can be very useful in case a memory card fails. In contrast, the A7 II only has one slot.

 

Connectivity comparison: Olympus E-1 vs Sony A7 II

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-1 and Sony Alpha A7 II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Olympus E-1»Y-----2.0---Olympus E-1
 
Sony A7 II«YstereomonoYYmicro2.0YY-Sony A7 II
 
Canon 6D Mark II« »YstereomonoY-mini2.0YYYCanon 6D Mark II
 
Canon 7D« »Ymono-Y-mini2.0---Canon 7D
 
Leica Digilux 3« »Ystereomono---2.0---Leica Digilux 3
 
Nikon D500« »YstereomonoYYmini3.0YYYNikon D500
 
Nikon D610« »YmonomonoYYmini2.0---Nikon D610
 
Nikon D7000« »YmonomonoY-mini2.0---Nikon D7000
 
Olympus E-5« »Ystereo---mini2.0---Olympus E-5
 
Olympus E-3« »Y-----2.0---Olympus E-3
 
Olympus E-330« »Y-----2.0---Olympus E-330
 
Olympus E-300« »Y-----2.0---Olympus E-300
 
Sony A7 III« »YstereomonoYYmicro3.1YYYSony A7 III
 
Sony A7R II« »YstereomonoYYmicro2.0YY-Sony A7R II
 
Sony A7S II« »YstereomonoYYmicro2.0YY-Sony A7S II
 
Sony A7« »YstereomonoYYmicro2.0YY-Sony A7
 
Sony A7R« »YstereomonoYYmicro2.0YY-Sony A7R

It is notable that the A7 II offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the E-1 does not offer wifi capability.

Studio photographers will appreciate that the Olympus E-1 (unlike the A7 II) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the E-1 and the A7 II have been discontinued, but can regularly be found used on eBay. The E-1 was replaced by the Olympus E-3, while the A7 II was followed by the Sony A7 III. 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.


Review summary: Olympus E-1 vs Sony A7 II

So what is the bottom line? Which of the two cameras – the Olympus E-1 or the Sony A7 II – 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-1:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Longer lasting: Can take more shots (750 versus 350) on a single battery charge.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More affordable: Was introduced into a lower priced segment (15 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in June 2003).

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Arguments in favor of the Sony Alpha A7 II:

  • More detail: Has more megapixels (24 vs 4.9MP), which boosts linear resolution by 125%.
  • Better image quality: Is equipped with a larger and more technologically advanced sensor.
  • Richer colors: The sensor size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
  • Broader imaging potential: Can capture not only stills but also 1080/60p video.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • 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 1.8") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1230k vs 134k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (5 vs 3 flaps/sec) to capture the decisive moment.
  • More compact: Is smaller (127x96mm vs 141x104mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 139g or 19 percent) and is thus easier to take along.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • 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 11 years and 4 months of technical progress since the E-1 launch.

If the count of individual advantages (bullet points above) is taken as a guide, the A7 II is the clear winner of the contest (21 : 7 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

E-1 07:21 A7 II

How about other alternatives? Do the specifications of the Olympus E-1 and the Sony A7 II 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 comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the E-1 or the A7 II. 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: Olympus E-1 vs Sony A7 II

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.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Olympus E-1»-+oo- Jun 2003 1,699- i Olympus E-1
 
Sony A7 II«+82/1004.5/55/55/5 Nov 2014 1,999- i Sony A7 II
 
Canon 6D Mark II« »+80/1004.5/54/54/5 Jun 2017 1,999 i i Canon 6D Mark II
 
Canon 7D« »+ +84/1004.5/55/54.5/5 Sep 2009 1,699- i Canon 7D
 
Leica Digilux 3« »----- Sep 2006 1,499- i Leica Digilux 3
 
Nikon D500« »+ +91/1004.5/55/55/5 Jan 2016 1,999 i i Nikon D500
 
Nikon D610« »+ +87/1004.5/54.5/54.5/5 Oct 2013 1,999 i i Nikon D610
 
Nikon D7000« »-80/1004.5/55/54.5/5 Sep 2010 1,499- i Nikon D7000
 
Olympus E-5« »-75/1004/5-4.5/5 Sep 2010 1,699- i Olympus E-5
 
Olympus E-3« »88/100+ +oo4/5 Oct 2007 1,699- i Olympus E-3
 
Olympus E-330« »-+o3.5/5- Jan 2006 999- i Olympus E-330
 
Olympus E-300« »-+oo4.5/5 Sep 2004 799- i Olympus E-300
 
Sony A7 III« »+ +89/1005/55/55/5 Feb 2018 1,999 i i Sony A7 III
 
Sony A7R II« »+ +90/1005/54.5/55/5 Jun 2015 3,199- i Sony A7R II
 
Sony A7S II« »+-4.5/55/55/5 Sep 2015 2,999 i i Sony A7S II
 
Sony A7« »+ +80/1005/54.5/55/5 Oct 2013 1,699- i Sony A7
 
Sony A7R« »+ +82/1004.5/55/55/5 Oct 2013 2,299- i Sony A7R
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

The review scores listed above should be treated with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price 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.

Olympus E-1:
Check Ebay offers
Sony A7 II:
Check Ebay offers

Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes 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-1 vs Sony A7 II

    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-1 Sony A7 II
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Four Thirds lenses Sony E mount lenses
    Launch Date June 2003 November 2014
    Launch Price USD 1699 USD 1999
    Sensor Specs Olympus E-1 Sony A7 II
    Sensor Technology CCD 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 4.9 Megapixels 24 Megapixels
    Image Resolution 2560 x 1920 pixels 6000 x 4000 pixels
    Pixel Pitch 6.78 μm 5.97 μm
    Pixel Density 2.19 MP/cm2 2.80 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 1080/60p Video
    ISO Setting 100-800 ISO 100-25600 ISO
    ISO Boost 100-3200 ISO 50-51200 ISO
    Image Processor TruePic BIONZ X
    DXO Sensor Quality (score) .. 90
    DXO Color Depth (bits) .. 24.9
    DXO Dynamic Range (EV) .. 13.6
    DXO Low Light (ISO) .. 2449
    Screen Specs Olympus E-1 Sony A7 II
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.48x 0.71x
    Viewfinder Resolution 2400k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View
    Rear LCD Size 1.8 inch 3.0 inch
    LCD Resolution 134k dots 1230k dots
    LCD Attachment Fixed screen Tilting screen
    Shooting Specs Olympus E-1 Sony A7 II
    Autofocus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing AidNo Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000/s 1/8000/s
    Continuous Shooting 3 shutter flaps/s 5 shutter flaps/s
    Shutter Life Expectancy150 000 actuations200 000 actuations
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium CF or XD cards MS or SDXC cards
    Second Storage Option Dual card slots Single card slot
    Connectivity Specs Olympus E-1 Sony A7 II
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    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-1 Sony A7 II
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type BLM-1 power pack NP-FW50 power pack
    Battery Life (CIPA)750 shots per charge350 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 141 x 104 x 81 mm
    (5.6 x 4.1 x 3.2 in)
    127 x 96 x 60 mm
    (5.0 x 3.8 x 2.4 in)
    Camera Weight 738 g (26.0 oz) 599 g (21.1 oz)

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