Olympus E-P3 vs Sony A7 III
The Olympus PEN E-P3 and the Sony Alpha A7 III are two enthusiast cameras that were officially introduced, respectively, in June 2011 and February 2018. Both the E-P3 and the A7 III are mirrorless interchangeable lens cameras that are based on a Four Thirds (E-P3) and a full frame (A7 III) sensor. The Olympus has a resolution of 12.2 megapixels, whereas the Sony provides 24 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Olympus E-P3||Sony A7 III|
|Mirrorless system camera||Mirrorless system camera|
|Micro Four Thirds lenses||Sony E mount lenses|
|12.2 MP, Four Thirds Sensor||24 MP, Full Frame Sensor|
|1080/60i Video||4K/30p Video|
|ISO 200-12800||ISO 100-51200 (50-204800)|
|Viewfinder optional||Electronic viewfinder (2359k dots)|
|3.0" LCD, 614k dots||3.0" LCD, 922k dots|
|Fixed touchscreen||Tilting touchscreen|
|3 shutter flaps per second||10 shutter flaps per second|
|In-body stabilization||In-body stabilization|
|Not weather sealed||Weathersealed body|
|330 shots per battery charge||610 shots per battery charge|
|122 x 69 x 34 mm, 369 g||127 x 96 x 74 mm, 650 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus PEN E-P3 and the Sony Alpha A7 III? 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-P3 vs Sony A7 III
The physical size and weight of the Olympus E-P3 and the Sony A7 III 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 width, height and depth measures are rounded to the nearest millimeter.
The E-P3 can be obtained in three different colors (black, silver, white), while the A7 III is only available in black.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7 III is considerably larger (45 percent) than the Olympus E-P3. Moreover, the A7 III is substantially heavier (76 percent) than the E-P3. It is noteworthy in this context that the A7 III is splash and dust-proof, while the E-P3 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-P3) and the Sony FE Lens Catalog (A7 III). 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-P3 gets 330 shots out of its BLS-5 battery, while the A7 III can take 610 images on a single charge of its NP-FZ100 power pack. The power pack in the A7 III can be charged via the USB port, 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, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.
|Olympus E-P3»||4.8 in||2.7 in||1.3 in||13.0 oz||330||n||Jun 2011||799||-||Olympus E-P3|
|Sony A7 III«||5.0 in||3.8 in||2.9 in||22.9 oz||610||Y||Feb 2018||1,999||Sony A7 III|
|Olympus E-P5« »||4.8 in||2.7 in||1.5 in||14.8 oz||330||n||May 2013||999||-||Olympus E-P5|
|Olympus E-PL5« »||4.4 in||2.5 in||1.5 in||11.5 oz||360||n||Sep 2012||599||-||Olympus E-PL5|
|Olympus E-PL2« »||4.5 in||2.8 in||1.7 in||12.8 oz||280||n||Jan 2011||599||-||Olympus E-PL2|
|Olympus E-PL3« »||4.3 in||2.5 in||1.5 in||11.0 oz||300||n||Jun 2011||599||-||Olympus E-PL3|
|Olympus E-PM1« »||4.3 in||2.5 in||1.3 in||9.3 oz||330||n||Jun 2011||499||-||Olympus E-PM1|
|Olympus E-PL1« »||4.5 in||2.8 in||1.7 in||11.8 oz||290||n||Feb 2010||599||-||Olympus E-PL1|
|Olympus E-P1« »||4.8 in||2.8 in||1.4 in||12.5 oz||300||n||Jun 2009||799||-||Olympus E-P1|
|Olympus E-P2« »||4.8 in||2.8 in||1.4 in||12.5 oz||300||n||Nov 2009||799||-||Olympus E-P2|
|Panasonic GX1« »||4.6 in||2.7 in||1.5 in||11.2 oz||320||n||Nov 2011||699||-||Panasonic GX1|
|Panasonic G10« »||4.9 in||3.3 in||2.9 in||13.7 oz||380||n||Mar 2010||499||-||Panasonic G10|
|Sony A9« »||5.0 in||3.8 in||2.5 in||23.7 oz||650||Y||Apr 2017||4,499||Sony A9|
|Sony A7R II« »||5.0 in||3.8 in||2.4 in||22.0 oz||290||Y||Jun 2015||3,199||-||Sony A7R II|
|Sony A7S II« »||5.0 in||3.8 in||2.4 in||22.1 oz||370||Y||Sep 2015||2,999||Sony A7S II|
|Sony A7 II« »||5.0 in||3.8 in||2.4 in||21.1 oz||350||Y||Nov 2014||1,999||-||Sony A7 II|
|Sony A7« »||5.0 in||3.7 in||1.9 in||16.7 oz||340||Y||Oct 2013||1,699||-||Sony A7|
|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 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-P3 was launched at a markedly lower price (by 60 percent) than the A7 III, 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: Olympus E-P3 vs Sony A7 III
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. 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 associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Olympus E-P3 features a Four Thirds sensor and the Sony A7 III a full frame sensor. The sensor area in the A7 III is 276 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-P3 has a native 4:3 aspect ratio, while the one in the A7 III offers a 3:2 aspect.
With 24MP, the A7 III offers a higher resolution than the E-P3 (12.2MP), but the A7 III nevertheless has larger individual pixels (pixel pitch of 5.94μm versus 4.29μm for the E-P3) due to its larger sensor. Moreover, the A7 III is a much more recent model (by 6 years and 8 months) than the E-P3, and its sensor will 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 the A7 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
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 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-P3 are 20.2 x 15.1 inch or 51.2 x 38.4 cm for good quality, 16.1 x 12.1 inch or 41 x 30.7 cm for very good quality, and 13.4 x 10.1 inch 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 Olympus PEN E-P3 has a native sensitivity range from ISO 200 to ISO 12800. The corresponding ISO settings for the Sony Alpha A7 III are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.
For many cameras, data on sensor performance has been reported by DXO Mark. 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"). Of the two cameras under consideration, the A7 III offers substantially better image quality than the E-P3 (overall score 45 points higher). The advantage is based on 4.2 bits higher color depth, 4.6 EV in additional dynamic range, and 2.8 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|Olympus E-P3»||Four Thirds||12.2||4032||3024||1080/60i||20.8||10.1||536||51||Olympus E-P3|
|Sony A7 III«||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3730||96||Sony A7 III|
|Olympus E-P5« »||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.4||895||72||Olympus E-P5|
|Olympus E-PL5« »||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.3||889||72||Olympus E-PL5|
|Olympus E-PL2« »||Four Thirds||12.2||4032||3024||720/30p||21.4||10.2||573||55||Olympus E-PL2|
|Olympus E-PL3« »||Four Thirds||12.2||4032||3024||1080/60i||20.9||10.3||499||52||Olympus E-PL3|
|Olympus E-PM1« »||Four Thirds||12.2||4032||3024||1080/60i||21.0||10.3||499||52||Olympus E-PM1|
|Olympus E-PL1« »||Four Thirds||12.2||4032||3024||720/30p||21.5||10.1||487||54||Olympus E-PL1|
|Olympus E-P1« »||Four Thirds||12.2||4032||3024||720/30p||21.4||10.4||536||55||Olympus E-P1|
|Olympus E-P2« »||Four Thirds||12.2||4032||3024||720/30p||21.5||10.4||505||56||Olympus E-P2|
|Panasonic GX1« »||Four Thirds||15.8||4592||3448||1080/60p||20.8||10.6||703||55||Panasonic GX1|
|Panasonic G10« »||Four Thirds||12.0||4000||3000||720/30p||21.2||10.1||411||52||Panasonic G10|
|Sony A9« »||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92||Sony A9|
|Sony A7R II« »||Full Frame||42.2||7952||5304||4K/30p||26.0||13.9||3434||98||Sony A7R II|
|Sony A7S II« »||Full Frame||12.0||4240||2832||4K/30p||23.6||13.3||2993||85||Sony A7S II|
|Sony A7 II« »||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90||Sony A7 II|
|Sony A7« »||Full Frame||24.0||6000||4000||1080/60p||24.8||14.2||2248||90||Sony A7|
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 III provides a better video resolution than the E-P3. It can shoot movie footage at 4K/30p, while the Olympus is limited to 1080/60i.
Feature comparison: Olympus E-P3 vs Sony A7 III
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A7 III has an electronic viewfinder (2359k dots), which can be very helpful when shooting in bright sunlight. In contrast, the E-P3 relies on live view and the rear LCD for framing. That said, the E-P3 can be equipped with an optional viewfinder – the VF-3. The following table reports on some other key feature differences and similarities of the Olympus E-P3, the Sony A7 III, and comparable cameras.
|Olympus E-P3»||-||n||3.0||614||fixed||Y||1/4000s||3.0||Y||Y||Olympus E-P3|
|Sony A7 III«||2359||n||3.0||922||tilting||Y||1/8000s||10.0||n||Y||Sony A7 III|
|Olympus E-P5« »||-||n||3.0||1037||tilting||Y||1/8000s||9.0||Y||Y||Olympus E-P5|
|Olympus E-PL5« »||-||n||3.0||460||tilting||Y||1/4000s||8.0||n||Y||Olympus E-PL5|
|Olympus E-PL2« »||-||n||3.0||460||fixed||n||1/4000s||3.0||Y||Y||Olympus E-PL2|
|Olympus E-PL3« »||-||n||3.0||460||tilting||n||1/4000s||5.5||n||Y||Olympus E-PL3|
|Olympus E-PM1« »||-||n||3.0||460||fixed||n||1/4000s||5.5||n||Y||Olympus E-PM1|
|Olympus E-PL1« »||-||n||2.7||230||fixed||n||1/2000s||3.0||Y||Y||Olympus E-PL1|
|Olympus E-P1« »||-||n||3.0||230||fixed||n||1/4000s||3.0||n||Y||Olympus E-P1|
|Olympus E-P2« »||-||n||3.0||230||fixed||n||1/4000s||3.0||n||Y||Olympus E-P2|
|Panasonic GX1« »||-||n||3.0||460||fixed||Y||1/4000s||4.2||Y||n||Panasonic GX1|
|Panasonic G10« »||202||n||3.0||460||fixed||n||1/4000s||2.6||Y||n||Panasonic G10|
|Sony A9« »||3686||n||3.0||1440||tilting||Y||1/8000s||20.0||n||Y||Sony A9|
|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 II« »||2400||n||3.0||1230||tilting||n||1/8000s||5.0||n||Y||Sony A7 II|
|Sony A7« »||2400||n||3.0||1230||tilting||n||1/8000s||5.0||n||n||Sony A7|
One difference between the cameras concerns the presence of an on-board flash. The E-P3 has one, while the A7 III does not. While the built-in flash of the E-P3 is not very powerful, it can at times be useful as a fill-in light.
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 E-P3 writes its imaging data to SDXC cards, while the A7 III uses SDXC or Memory Stick PRO Duo cards. The A7 III features dual card slots, which can be very useful in case a memory card fails. In contrast, the E-P3 only has one slot. The A7 III supports UHS-II cards (on its first slot), while the E-P3 can use UHS-I cards.
Connectivity comparison: Olympus E-P3 vs Sony A7 III
For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Olympus PEN E-P3 and Sony Alpha A7 III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Olympus E-P3»||Y||stereo||-||-||-||mini||2.0||-||-||-||Olympus E-P3|
|Sony A7 III«||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7 III|
|Olympus E-P5« »||Y||stereo||mono||-||-||micro||2.0||Y||-||-||Olympus E-P5|
|Olympus E-PL5« »||Y||stereo||mono||-||-||mini||2.0||-||-||-||Olympus E-PL5|
|Olympus E-PL2« »||Y||stereo||-||-||-||mini||2.0||-||-||-||Olympus E-PL2|
|Olympus E-PL3« »||Y||stereo||-||-||-||mini||2.0||-||-||-||Olympus E-PL3|
|Olympus E-PM1« »||Y||stereo||mono||-||-||mini||2.0||-||-||-||Olympus E-PM1|
|Olympus E-PL1« »||Y||stereo||-||-||-||mini||2.0||-||-||-||Olympus E-PL1|
|Olympus E-P1« »||Y||stereo||-||-||-||mini||2.0||-||-||-||Olympus E-P1|
|Olympus E-P2« »||Y||stereo||-||-||-||mini||2.0||-||-||-||Olympus E-P2|
|Panasonic GX1« »||Y||stereo||mono||-||-||mini||2.0||-||-||-||Panasonic GX1|
|Panasonic G10« »||Y||mono||-||-||-||mini||2.0||-||-||-||Panasonic G10|
|Sony A9« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y||Sony A9|
|Sony A7R II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7R II|
|Sony A7S II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7S II|
|Sony A7 II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7 II|
|Sony A7« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7|
It is notable that the A7 III offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the E-P3 does not offer wifi capability.
The A7 III is a recent model that features in the current product line-up of Sony. In contrast, the E-P3 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the E-P3 was succeeded by the Olympus E-P5. 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-P3 vs Sony A7 III
So how do things add up? Which of the two cameras – the Olympus E-P3 or the Sony A7 III – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Olympus PEN E-P3:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More compact: Is smaller (122x69mm vs 127x96mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 281g or 43 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 (60 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in June 2011).
Arguments in favor of the Sony Alpha A7 III:
- More detail: Has more megapixels (24 vs 12.2MP), which boosts linear resolution by 43%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better image quality: Scores substantially higher (45 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (4.2 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (4.6 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (2.8 stops ISO advantage).
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60i).
- 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.
- Easier framing: Has an electronic viewfinder for image framing and settings control.
- More detailed LCD: Has a higher resolution rear screen (922k vs 614k 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 (10 vs 3 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: Gets more shots (610 versus 330) out of a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- 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.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
- More modern: Reflects 6 years and 8 months of technical progress since the E-P3 launch.
If the count of relative strengths (bullet points above) is taken as a measure, the A7 III is the clear winner of the contest (26 : 6 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 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.
How about other alternatives? Do the specifications of the Olympus E-P3 and the Sony A7 III 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 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 E-P3 and the A7 III 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: Olympus E-P3 vs Sony A7 III
This is where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular camera 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.
|Olympus E-P3»||83/100||74/100||4.5/5||4.5/5||4.5/5||Jun 2011||799||-||Olympus E-P3|
|Sony A7 III«||+ +||89/100||5/5||5/5||5/5||Feb 2018||1,999||Sony A7 III|
|Olympus E-P5« »||+ +||78/100||4.5/5||4.5/5||5/5||May 2013||999||-||Olympus E-P5|
|Olympus E-PL5« »||+ +||-||4.5/5||4.5/5||4.5/5||Sep 2012||599||-||Olympus E-PL5|
|Olympus E-PL2« »||83/100||71/100||4.5/5||4.5/5||4.5/5||Jan 2011||599||-||Olympus E-PL2|
|Olympus E-PL3« »||+ +||72/100||4.5/5||-||4/5||Jun 2011||599||-||Olympus E-PL3|
|Olympus E-PM1« »||86/100||71/100||4.5/5||-||4.5/5||Jun 2011||499||-||Olympus E-PM1|
|Olympus E-PL1« »||86/100||69/100||4/5||4.5/5||4.5/5||Feb 2010||599||-||Olympus E-PL1|
|Olympus E-P1« »||+||66/100||4/5||4/5||4.5/5||Jun 2009||799||-||Olympus E-P1|
|Olympus E-P2« »||+||69/100||4/5||4.5/5||4.5/5||Nov 2009||799||-||Olympus E-P2|
|Panasonic GX1« »||+||77/100||4.5/5||4.5/5||4.5/5||Nov 2011||699||-||Panasonic GX1|
|Panasonic G10« »||-||70/100||4/5||-||4/5||Mar 2010||499||-||Panasonic G10|
|Sony A9« »||+ +||89/100||5/5||5/5||5/5||Apr 2017||4,499||Sony A9|
|Sony A7R II« »||+ +||90/100||5/5||4.5/5||5/5||Jun 2015||3,199||-||Sony A7R II|
|Sony A7S II« »||+||-||4.5/5||5/5||5/5||Sep 2015||2,999||Sony A7S II|
|Sony A7 II« »||+||82/100||4.5/5||5/5||5/5||Nov 2014||1,999||-||Sony A7 II|
|Sony A7« »||+ +||80/100||5/5||4.5/5||5/5||Oct 2013||1,699||-||Sony A7|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.|
The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, 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.
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. 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-P3 vs Sony A7 III
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 Model||Olympus E-P3||Sony A7 III|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Micro Four Thirds lenses||Sony E mount lenses|
|Launch Date||June 2011||February 2018|
|Launch Price||USD 799||USD 1999|
|Sensor Specs||Olympus E-P3||Sony A7 III|
|Sensor Format||Four Thirds Sensor||Full Frame Sensor|
|Sensor Size||17.3 x 13.0 mm||35.6 x 23.8 mm|
|Sensor Area||224.9 mm2||847.28 mm2|
|Sensor Diagonal||21.6 mm||42.8 mm|
|Sensor Resolution||12.2 Megapixels||24 Megapixels|
|Image Resolution||4032 x 3024 pixels||6000 x 4000 pixels|
|Pixel Pitch||4.29 μm||5.94 μm|
|Pixel Density||5.42 MP/cm2||2.83 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/60i Video||4K/30p Video|
|ISO Setting||200-12800 ISO||100-51200 ISO|
|ISO Boost||no Enhancement||50-204800 ISO|
|Image Processor||TruePic VI||BIONZ X|
|DXO Sensor Quality (score)||51||96|
|DXO Color Depth (bits)||20.8||25.0|
|DXO Dynamic Range (EV)||10.1||14.7|
|DXO Low Light (ISO)||536||3730|
|Screen Specs||Olympus E-P3||Sony A7 III|
|Viewfinder Type||Viewfinder optional||Electronic viewfinder|
|Viewfinder Field of View||100%|
|Viewfinder Resolution||2359k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0 inch||3.0 inch|
|LCD Resolution||614k dots||922k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Olympus E-P3||Sony A7 III|
|Autofocus System||Contrast-detect AF||On-Sensor Phase-detect|
|Manual Focusing Aid||No Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000/s||1/8000/s|
|Continuous Shooting||3 shutter flaps/s||10 shutter flaps/s|
|Electronic Shutter||no E-Shutter||YES|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Image Stabilization||In-body stabilization||In-body stabilization|
|Fill Flash||Build-in Flash||no On-Board Flash|
|Storage Medium||SDXC cards||MS or SDXC cards|
|Second Storage Option||Single card slot||Dual card slots|
|UHS card support||UHS-I||Single UHS-II|
|Connectivity Specs||Olympus E-P3||Sony A7 III|
|USB Connector||USB 2.0||USB 3.1|
|HDMI Port||mini 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|
|Bluetooth Support||no Bluetooth||Bluetooth built-in|
|Body Specs||Olympus E-P3||Sony A7 III|
|Environmental Sealing||Not weather sealed||Weathersealed body|
|Battery Type||BLS-5 power pack||NP-FZ100 power pack|
|Battery Life (CIPA)||330 shots per charge||610 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
122 x 69 x 34 mm
(4.8 x 2.7 x 1.3 in)
127 x 96 x 74 mm
(5.0 x 3.8 x 2.9 in)
|Camera Weight||369 g (13.0 oz)||650 g (22.9 oz)|
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