A potelyt.com – Photography & Imaging Resources
ad

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

PW

Olympus E-M10 IV vs Sony A7 IV

The Olympus OM-D E-M10 Mark IV and the Sony Alpha A7 IV are two digital cameras that were announced, respectively, in August 2020 and October 2021. Both the E-M10 IV and the A7 IV are mirrorless interchangeable lens cameras that are based on a Four Thirds (E-M10 IV) and a full frame (A7 IV) sensor. The Olympus has a resolution of 20.2 megapixels, whereas the Sony provides 32.7 MP.

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

Headline Specifications
Olympus E-M10 IV
versus
Sony A7 IV
Olympus E-M10 IV   Sony A7 IV
Mirrorless system camera Mirrorless system camera
Micro Four Thirds lenses Sony E mount lenses
20.2 MP – Four Thirds sensor 32.7 MP – Full Frame sensor
4K/30p Video 4K/60p Video
ISO 200-25,600 ISO 100-51,200 (50 - 204,800)
Electronic viewfinder (2360k dots) Electronic viewfinder (3686k dots)
3.0" LCD – 1040k dots 3.0" LCD – 1037k dots
Tilting touchscreen Swivel touchscreen
15 shutter flaps per second 10 shutter flaps per second
In-body stabilizationIn-body stabilization
not weather sealedWeathersealed body
360 shots per battery charge580 shots per battery charge
122 x 84 x 49 mm, 383 g 131 x 96 x 80 mm, 659 g
logo
Check E-M10 IV price at
amazon.com
logo
Check A7 IV price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus OM-D E-M10 Mark IV and the Sony Alpha A7 IV? 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

The physical size and weight of the Olympus E-M10 IV and the Sony A7 IV are illustrated 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 size dimensions are rounded to the nearest millimeter.

The E-M10 IV can be obtained in two different colors (black, silver), while the A7 IV is only available in black.

Size Olympus E-M10 IV vs Sony A7 IV
Compare E-M10 IV versus A7 IV top
Comparison E-M10 IV or A7 IV rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7 IV is notably larger (23 percent) than the Olympus E-M10 IV. Moreover, the A7 IV is substantially heavier (72 percent) than the E-M10 IV. It is noteworthy in this context that the A7 IV is splash and dust-proof, while the E-M10 IV 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 Micro Four Thirds Lens Catalog (E-M10 IV) and the Sony FE Lens Catalog (A7 IV). Mirrorless cameras, such as the two under consideration, have the additional advantage of having a short flange to focal plane distance, which makes it possible to mount many lenses from other systems onto the camera via adapters.

Concerning battery life, the E-M10 IV gets 360 shots out of its Olympus BLS-50 battery, while the A7 IV can take 580 images on a single charge of its Sony NP-FZ100 power pack. The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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.
 
Olympus E-M10 IV 122 mm 84 mm 49 mm 383 g 360 n Aug 2020 699 amazon.com
2.
 
Sony A7 IV 131 mm 96 mm 80 mm 659 g 580 Y Oct 2021 2,499 amazon.com
3.
 
Olympus E-M5 III 125 mm 85 mm 50 mm 414 g 310 Y Oct 2019 1,199ebay.com
4.
 
Olympus E-M10 119 mm 82 mm 46 mm 396 g 320 n Jan 2014 699ebay.com
5.
 
Olympus E-M10 II 120 mm 83 mm 47 mm 390 g 320 n Aug 2015 649ebay.com
6.
 
Olympus E-M10 III 122 mm 84 mm 50 mm 410 g 330 n Aug 2017 649ebay.com
7.
 
Olympus E-P7 118 mm 69 mm 38 mm 337 g 360 n Jun 2021 799 amazon.com
8.
 
Olympus E-PL7 115 mm 67 mm 38 mm 357 g 350 n Aug 2014 599ebay.com
9.
 
Olympus E-PL8 115 mm 67 mm 38 mm 357 g 350 n Sep 2016 549ebay.com
10.
 
Olympus E-PL9 117 mm 68 mm 39 mm 380 g 350 n Feb 2018 599ebay.com
11.
 
Olympus E-PL10 117 mm 68 mm 39 mm 380 g 350 n Oct 2019 599ebay.com
12.
 
Olympus PEN-F 125 mm 72 mm 37 mm 427 g 330 n Jan 2016 1,199ebay.com
13.
 
Sony A1 129 mm 97 mm 81 mm 737 g 530 Y Jan 2021 6,499 amazon.com
14.
 
Sony A7 III 127 mm 96 mm 74 mm 650 g 610 Y Feb 2018 1,999 amazon.com
15.
 
Sony A7R IIIA 127 mm 96 mm 74 mm 650 g 650 Y Apr 2021 3,199 amazon.com
16.
 
Sony A7R V 131 mm 97 mm 82 mm 723 g 530 Y Oct 2022 3,899 amazon.com
17.
 
Sony A7S III 127 mm 97 mm 81 mm 699 g 600 Y Jul 2020 3,499 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 retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The E-M10 IV was launched at a markedly lower price (by 72 percent) than the A7 IV, which puts it into a different market segment. 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

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. 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 Olympus E-M10 IV features a Four Thirds sensor and the Sony A7 IV a full frame sensor. The sensor area in the A7 IV is 281 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-M10 IV has a native 4:3 aspect ratio, while the one in the A7 IV offers a 3:2 aspect.

Olympus E-M10 IV and Sony A7 IV sensor measures

With 32.7MP, the A7 IV offers a higher resolution than the E-M10 IV (20.2MP), but the A7 IV nevertheless has larger individual pixels (pixel pitch of 5.12μm versus 3.34μm for the E-M10 IV) due to its larger sensor. Moreover, the A7 IV is a somewhat more recent model (by 1 year and 2 months) than the E-M10 IV, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

The resolution advantage of the Sony A7 IV implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7 IV for good quality output (200 dots per inch) amounts to 35 x 23.4 inches or 89 x 59.3 cm, for very good quality (250 dpi) 28 x 18.7 inches or 71.2 x 47.5 cm, and for excellent quality (300 dpi) 23.4 x 15.6 inches or 59.3 x 39.6 cm. The corresponding values for the Olympus E-M10 IV are 25.9 x 19.4 inches or 65.8 x 49.4 cm for good quality, 20.7 x 15.6 inches or 52.7 x 39.5 cm for very good quality, and 17.3 x 13 inches or 43.9 x 32.9 cm for excellent quality prints.

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

The Olympus OM-D E-M10 Mark IV has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 100-25600. The corresponding ISO settings for the Sony Alpha A7 IV are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.

In terms of underlying technology, the E-M10 IV is build around a CMOS sensor, while the A7 IV uses a BSI-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.

E-M10 IV versus A7 IV MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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. 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.
 
Olympus E-M10 IV Four Thirds 20.2 5184 38884K/30p23.313.2140276
2.
 
Sony A7 IV Full Frame 32.7 7008 46724K/60p25.414.7337997
3.
 
Olympus E-M5 III Four Thirds 20.2 5184 38884K/30p23.313.1132476
4.
 
Olympus E-M10 Four Thirds 15.9 4608 34561080/30p22.812.388472
5.
 
Olympus E-M10 II Four Thirds 15.9 4608 34561080/60p23.112.584273
6.
 
Olympus E-M10 III Four Thirds 15.9 4608 34564K/30p23.112.8112074
7.
 
Olympus E-P7 Four Thirds 20.2 5184 38884K/30p23.413.3149477
8.
 
Olympus E-PL7 Four Thirds 15.9 4608 34561080/30p22.712.487372
9.
 
Olympus E-PL8 Four Thirds 15.9 4608 34561080/30p23.012.6103073
10.
 
Olympus E-PL9 Four Thirds 15.9 4608 34564K/30p23.112.8116274
11.
 
Olympus E-PL10 Four Thirds 15.9 4608 34564K/30p23.313.1132476
12.
 
Olympus PEN-F Four Thirds 20.2 5184 38881080/60p23.112.489474
13.
 
Sony A1 Full Frame 49.8 8640 57608k/30p25.914.5316398
14.
 
Sony A7 III Full Frame 24.0 6000 40004K/30p25.014.7373096
15.
 
Sony A7R IIIA Full Frame 42.2 7952 53044K/30p26.014.73523100
16.
 
Sony A7R V Full Frame 60.2 9504 63368k/24p26.514.83187100
17.
 
Sony A7S III Full Frame 12.0 4240 28324K/120p23.713.9252086
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the A7 IV provides a faster frame rate than the E-M10 IV. It can shoot movie footage at 4K/60p, while the Olympus is limited to 4K/30p.

ad

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the A7 IV offers a substantially higher resolution than the one in the E-M10 IV (3686k vs 2360k dots). The adjacent table lists some of the other core features of the Olympus E-M10 IV and Sony A7 IV along with similar information for a selection of comparators.

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.
 
Olympus E-M10 IV2360 n3.0 / 1040 tilting Y 1/4000s 15.0/s Y Y
2.
 
Sony A7 IV3686 n3.0 / 1037 swivel Y 1/8000s 10.0/s n Y
3.
 
Olympus E-M5 III2360 n3.0 / 1040 swivel Y 1/8000s 10.0/s n Y
4.
 
Olympus E-M101440 n3.0 / 1037 tilting Y 1/4000s 8.0/s Y Y
5.
 
Olympus E-M10 II2360 n3.0 / 1040 tilting Y 1/4000s 8.0/s Y Y
6.
 
Olympus E-M10 III2360 n3.0 / 1040 tilting Y 1/4000s 8.6/s Y Y
7.
 
Olympus E-P7none n3.0 / 1040 tilting Y 1/4000s 8.7/s Y Y
8.
 
Olympus E-PL7optional n3.0 / 1037 tilting Y 1/4000s 8.0/s n Y
9.
 
Olympus E-PL8optional n3.0 / 1037 tilting Y 1/4000s 8.0/s n Y
10.
 
Olympus E-PL9none n3.0 / 1040 tilting Y 1/4000s 8.6/s Y Y
11.
 
Olympus E-PL10none n3.0 / 1040 tilting Y 1/4000s 8.6/s Y Y
12.
 
Olympus PEN-F2360 n3.0 / 1037 swivel Y 1/8000s 10.0/s n Y
13.
 
Sony A19437 n3.0 / 1440 tilting Y 1/8000s 10.0/s n Y
14.
 
Sony A7 III2359 n3.0 / 922 tilting Y 1/8000s 10.0/s n Y
15.
 
Sony A7R IIIA3686 n3.0 / 2340 tilting Y 1/8000s 10.0/s n Y
16.
 
Sony A7R V9440 n3.2 / 2100 full-flex Y 1/8000s 10.0/s n Y
17.
 
Sony A7S III9440 n3.0 / 1440 swivel Y 1/8000s 10.0/s n Y
Note: *) 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-M10 IV has one, while the A7 IV does not. While the built-in flash of the E-M10 IV is not very powerful, it can at times be useful as a fill-in light.

Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.

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, both cameras under consideration feature an 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 Olympus E-M10 IV 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 E-M10 IV writes its imaging data to SDXC cards, while the A7 IV uses CFexpress (type A) or SDXC cards. The A7 IV features dual card slots, which can be very useful in case a memory card fails. In contrast, the E-M10 IV only has one slot. Moreover, both cameras support UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s).

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 Olympus OM-D E-M10 Mark IV and Sony Alpha A7 IV 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.
 
Olympus E-M10 IVYstereo / mono--micro2.0Y-Y
2.
 
Sony A7 IVYstereo / monoYYfull3.2Y-Y
3.
 
Olympus E-M5 IIIYstereo / monoY-micro2.0Y-Y
4.
 
Olympus E-M10Ystereo / mono--micro2.0Y--
5.
 
Olympus E-M10 IIYstereo / mono--micro2.0Y--
6.
 
Olympus E-M10 IIIYstereo / mono--micro2.0Y--
7.
 
Olympus E-P7Ystereo / mono--micro2.0Y-Y
8.
 
Olympus E-PL7Ystereo / mono--micro2.0Y--
9.
 
Olympus E-PL8Ystereo / mono--micro2.0Y--
10.
 
Olympus E-PL9Ystereo / mono--micro2.0Y-Y
11.
 
Olympus E-PL10Ystereo / mono--micro2.0Y-Y
12.
 
Olympus PEN-FYstereo / mono--micro2.0Y--
13.
 
Sony A1Ystereo / monoYYfull3.2Y-Y
14.
 
Sony A7 IIIYstereo / monoYYmicro3.1YYY
15.
 
Sony A7R IIIAYstereo / monoYYmicro3.2YYY
16.
 
Sony A7R VYstereo / monoYYfull3.2Y-Y
17.
 
Sony A7S IIIYstereo / monoYYfull3.2Y-Y

It is notable that the A7 IV has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The E-M10 IV lacks such a headphone port.

Both the E-M10 IV and the A7 IV are recent models that are part of the current product line-up. The E-M10 IV replaced the earlier Olympus E-M10 III, while the A7 IV followed on from the Sony A7 III. Further information on the features and operation of the E-M10 IV and A7 IV can be found, respectively, in the Olympus E-M10 IV Manual (free pdf) or the online Sony A7 IV Manual.

ad

Review summary

So what conclusions can be drawn? Is there a clear favorite between the Olympus E-M10 IV and the Sony A7 IV? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

ilogo

Arguments in favor of the Olympus OM-D E-M10 Mark IV:

  • Faster burst: Shoots at higher frequency (15 vs 10 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More compact: Is smaller (122x84mm vs 131x96mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 276g or 42 percent) and hence easier to carry around.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (72 percent cheaper at launch).
  • More heavily discounted: Has been on the market for longer (launched in August 2020).

ilogo

Advantages of the Sony Alpha A7 IV:

  • More detail: Has more megapixels (32.7 vs 20.2MP), which boosts linear resolution by 30%.
  • 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.
  • Better video: Provides higher movie framerates (4K/60p versus 4K/30p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More detailed viewfinder: Has higher resolution electronic viewfinder (3686k vs 2360k dots).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.62x).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Longer lasting: Gets more shots (580 versus 360) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Faster data transfer: Supports a more advanced USB protocol (3.2 vs 2.0).
  • More solid recording: Has a full-sized HDMI port for a sturdy connection to an external recorder.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More modern: Was introduced somewhat (1 year and 2 months) more recently.

If the number of relative strengths (bullet points above) is taken as a guide, the A7 IV is the clear winner of the contest (19 : 7 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 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-M10 IV 07:19 A7 IV

How about other alternatives? Do the specifications of the Olympus E-M10 IV and the Sony A7 IV place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing 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-M10 IV and the A7 IV 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 where reviews by experts come in. The following table reports the overall ratings of the cameras as published by some of the major camera 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.
 
Olympus E-M10 IV4.5/5..5/581/1004.5/54.5/5 Aug 2020 699 amazon.com
2.
 
Sony A7 IV5/5+ +4.5/589/1004.5/54.5/5 Oct 2021 2,499 amazon.com
3.
 
Olympus E-M5 III5/5+5/582/1004.5/54.5/5 Oct 2019 1,199ebay.com
4.
 
Olympus E-M104/5....80/1005/55/5 Jan 2014 699ebay.com
5.
 
Olympus E-M10 II4.5/5+ +..80/1005/55/5 Aug 2015 649ebay.com
6.
 
Olympus E-M10 III..+5/580/1004.5/54.5/5 Aug 2017 649ebay.com
7.
 
Olympus E-P74/5..4.5/5....4.5/5 Jun 2021 799 amazon.com
8.
 
Olympus E-PL74/5+....5/54/5 Aug 2014 599ebay.com
9.
 
Olympus E-PL8........4.5/54/5 Sep 2016 549ebay.com
10.
 
Olympus E-PL9..+....4.5/54/5 Feb 2018 599ebay.com
11.
 
Olympus E-PL10....4/577/100..4/5 Oct 2019 599ebay.com
12.
 
Olympus PEN-F....4/582/1004.5/55/5 Jan 2016 1,199ebay.com
13.
 
Sony A15/5o4.5/593/1004.5/55/5 Jan 2021 6,499 amazon.com
14.
 
Sony A7 III..+ +4.5/589/1005/55/5 Feb 2018 1,999 amazon.com
15.
 
Sony A7R IIIA..+ +4/590/1004.5/55/5 Apr 2021 3,199 amazon.com
16.
 
Sony A7R V5/5+ +4.5/592/100.... Oct 2022 3,899 amazon.com
17.
 
Sony A7S III4.5/5+ +5/591/1004.5/55/5 Jul 2020 3,499 amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, 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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

logo
Check E-M10 IV price at
amazon.com
logo
Check A7 IV price at
amazon.com

Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

~
    loader
    ad

    Specifications: Olympus E-M10 IV vs Sony A7 IV

    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-M10 IV Sony A7 IV
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Micro Four Thirds lenses Sony E mount lenses
    Launch Date August 2020 October 2021
    Launch Price USD 699 USD 2,499
    Sensor Specs Olympus E-M10 IV Sony A7 IV
    Sensor Technology CMOS BSI-CMOS
    Sensor Format Four Thirds Sensor Full Frame Sensor
    Sensor Size 17.3 x 13.0 mm 35.9 x 23.9 mm
    Sensor Area 224.9 mm2 858.01 mm2
    Sensor Diagonal 21.6 mm 43.1 mm
    Crop Factor 2.0x 1.0x
    Sensor Resolution 20.2 Megapixels 32.7 Megapixels
    Image Resolution 5184 x 3888 pixels 7008 x 4672 pixels
    Pixel Pitch 3.34 μm 5.12 μm
    Pixel Density 8.96 MP/cm2 3.82 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/30p Video 4K/60p Video
    ISO Setting 200 - 25,600 ISO 100 - 51,200 ISO
    ISO Boost 100 - 25,600 ISO 50 - 204,800 ISO
    Image Processor TruePic VIII BIONZ XR
    DXO Sensor Quality (score) .. 97
    DXO Color Depth (bits) .. 25.4
    DXO Dynamic Range (EV) .. 14.7
    DXO Low Light (ISO) .. 3379
    Screen Specs Olympus E-M10 IV Sony A7 IV
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.62x 0.78x
    Viewfinder Resolution 2360k dots 3686k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1040k dots 1037k dots
    LCD Attachment Tilting screen Swivel screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Olympus E-M10 IV Sony A7 IV
    Focus System Contrast-detect AF On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 15 shutter flaps/s 10 shutter flaps/s
    Electronic Shutterup to 1/16000sYES
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDXC cards CFexA or SDXC cards
    Single or Dual Card Slots Single card slot Dual card slots
    UHS card support UHS-II Dual UHS-II
    Connectivity Specs Olympus E-M10 IV Sony A7 IV
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 3.2
    HDMI Port micro HDMI full HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Bluetooth Support Bluetooth built-in Bluetooth built-in
    Body Specs Olympus E-M10 IV Sony A7 IV
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Olympus BLS-50 Sony NP-FZ100
    Battery Life (CIPA)360 shots per charge580 shots per charge
    In-Camera Charging USB charging USB charging
    Body Dimensions 122 x 84 x 49 mm
    (4.8 x 3.3 x 1.9 in)
    131 x 96 x 80 mm
    (5.2 x 3.8 x 3.1 in)
    Camera Weight 383 g (13.5 oz) 659 g (23.2 oz)
    logo
    Check E-M10 IV price at
    amazon.com
    logo
    Check A7 IV price at
    amazon.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  »  Olympus E-M10 IV vs Sony A7 IV