Olympus E-300 vs Sony A7R III
The Olympus Evolt E-300 and the Sony Alpha A7R III are two digital cameras that were announced, respectively, in September 2004 and October 2017. The E-300 is a DSLR, while the A7R III is a mirrorless interchangeable lens camera. The cameras are based on a Four Thirds (E-300) and a full frame (A7R III) sensor. The Olympus has a resolution of 8 megapixels, whereas the Sony provides 42.2 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Olympus E-300||Sony A7R III|
|Digital single lens reflex||Mirrorless system camera|
|Four Thirds lenses||Sony E mount lenses|
|8 MP, Four Thirds Sensor||42.2 MP, Full Frame Sensor|
|no Video||4K/30p Video|
|ISO 100-400 (100-1600)||ISO 100-32000 (50-102400)|
|Optical viewfinder||Electronic viewfinder (3686k dots)|
|1.8" LCD, 134k dots||3.0" LCD, 1440k dots|
|Fixed screen (not touch-sensitive)||Tilting touchscreen|
|2.5 shutter flaps per second||10 shutter flaps per second|
|Lens stabilization only||In-body stabilization|
|Not weather sealed||Weathersealed body|
|750 shots per battery charge||650 shots per battery charge|
|147 x 85 x 64 mm, 624 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 Evolt E-300 and the Sony Alpha A7R 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.
The side-by-side display below illustrates the physical size and weight of the Olympus E-300 and the Sony A7R III. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All size dimensions are rounded to the nearest millimeter.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7R III is somewhat smaller (2 percent) than the Olympus E-300. However, the A7R III is slightly heavier (4 percent) than the E-300. It is noteworthy in this context that the A7R III is splash and dust-proof, while the E-300 does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Four Thirds Lens Catalog (E-300) and the Sony FE Lens Catalog (A7R III). Mirrorless cameras, such as the A7R III, 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-300 gets 750 shots out of its BLM-1 battery, while the A7R III can take 650 images on a single charge of its NP-FZ100 power pack. The power pack in the A7R III 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.
|Olympus E-300»||5.8 in||3.3 in||2.5 in||22.0 oz||750||n||Sep 2004||799||-||Olympus E-300|
|Sony A7R III«||5.0 in||3.8 in||2.9 in||22.9 oz||650||Y||Oct 2017||3,199||-||Sony A7R III|
|Canon XT« »||5.0 in||3.7 in||2.5 in||19.0 oz||400||n||Feb 2005||899||-||Canon XT|
|Leica Digilux 3« »||5.7 in||3.4 in||3.0 in||21.4 oz||750||n||Sep 2006||1,499||-||Leica Digilux 3|
|Nikon Z7« »||5.3 in||4.0 in||2.6 in||23.8 oz||330||Y||Aug 2018||3,399||Nikon Z7|
|Olympus E-620« »||5.1 in||3.7 in||2.4 in||18.4 oz||500||n||Feb 2009||699||-||Olympus E-620|
|Olympus E-520« »||5.4 in||3.6 in||2.7 in||18.9 oz||750||n||May 2008||699||-||Olympus E-520|
|Olympus E-410« »||5.1 in||3.6 in||2.1 in||15.3 oz||500||n||Mar 2007||699||-||Olympus E-410|
|Olympus E-510« »||5.4 in||3.6 in||2.7 in||19.0 oz||750||n||Mar 2007||799||-||Olympus E-510|
|Olympus E-330« »||5.5 in||3.4 in||2.8 in||22.5 oz||750||n||Jan 2006||999||-||Olympus E-330|
|Olympus E-400« »||5.1 in||3.6 in||2.1 in||15.3 oz||500||n||Sep 2006||699||-||Olympus E-400|
|Olympus E-500« »||5.1 in||3.7 in||2.6 in||16.9 oz||750||n||Sep 2005||599||-||Olympus E-500|
|Olympus E-1« »||5.6 in||4.1 in||3.2 in||26.0 oz||750||Y||Jun 2003||1,699||-||Olympus E-1|
|Sony A9« »||5.0 in||3.8 in||2.5 in||23.7 oz||650||Y||Apr 2017||4,499||Sony A9|
|Sony A99 II« »||5.6 in||4.1 in||3.0 in||29.9 oz||490||Y||Sep 2016||3,199||Sony A99 II|
|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|
|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-300 was launched at a markedly lower price (by 75 percent) than the A7R 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Olympus E-300 features a Four Thirds sensor and the Sony A7R III a full frame sensor. The sensor area in the A7R III is 283 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-300 has a native 4:3 aspect ratio, while the one in the A7R III offers a 3:2 aspect.
With 42.2MP, the A7R III offers a higher resolution than the E-300 (8MP), but the A7R III has smaller individual pixels (pixel pitch of 4.52μm versus 5.30μm for the E-300). Yet, the A7R III is a much more recent model (by 13 years and 1 month) than the E-300, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the A7R III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sony A7R III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7R III for good quality output (200 dots per inch) amounts to 39.8 x 26.5 inch or 101 x 67.4 cm, for very good quality (250 dpi) 31.8 x 21.2 inch or 80.8 x 53.9 cm, and for excellent quality (300 dpi) 26.5 x 17.7 inch or 67.3 x 44.9 cm. The corresponding values for the Olympus E-300 are 16.3 x 12.2 inch or 41.5 x 31.1 cm for good quality, 13.1 x 9.8 inch or 33.2 x 24.9 cm for very good quality, and 10.9 x 8.2 inch or 27.6 x 20.7 cm for excellent quality prints.
The A7R III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the E-300, the A7R III has the capacity to capture high quality composite images by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
The Olympus Evolt E-300 has a native sensitivity range from ISO 100 to ISO 400, which can be extended to ISO 100-1600. The corresponding ISO settings for the Sony Alpha A7R III are ISO 100 to ISO 32000, with the possibility to increase the ISO range to 50-102400.
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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|Olympus E-300»||Four Thirds||8.0||3264||2448||-||-||-||-||-||Olympus E-300|
|Sony A7R III«||Full Frame||42.2||7952||5304||4K/30p||26.0||14.7||3523||100||Sony A7R III|
|Canon XT« »||APS-C||8.0||3456||2304||-||21.8||10.8||637||60||Canon XT|
|Leica Digilux 3« »||Four Thirds||7.4||3136||2352||-||-||-||-||-||Leica Digilux 3|
|Nikon Z7« »||Full Frame||45.4||8256||5504||4K/30p||26.3||14.6||2668||99||Nikon Z7|
|Olympus E-620« »||Four Thirds||12.2||4032||3024||-||21.3||10.3||536||55||Olympus E-620|
|Olympus E-520« »||Four Thirds||10.0||3648||2736||-||21.4||10.4||548||55||Olympus E-520|
|Olympus E-410« »||Four Thirds||10.0||3648||2736||-||21.1||10.0||494||51||Olympus E-410|
|Olympus E-510« »||Four Thirds||10.0||3648||2736||-||21.2||10.0||442||52||Olympus E-510|
|Olympus E-330« »||Four Thirds||7.4||3136||2352||-||-||-||-||-||Olympus E-330|
|Olympus E-400« »||Four Thirds||10.0||3648||2736||-||-||-||-||-||Olympus E-400|
|Olympus E-500« »||Four Thirds||8.0||3264||2448||-||-||-||-||-||Olympus E-500|
|Olympus E-1« »||Four Thirds||4.9||2560||1920||-||-||-||-||-||Olympus E-1|
|Sony A9« »||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92||Sony A9|
|Sony A99 II« »||Full Frame||42.2||7952||5304||4K/30p||25.4||13.4||2317||92||Sony A99 II|
|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|
Many modern cameras cannot only take still pictures, but also record videos. The A7R III indeed provides for movie recording, while the E-300 does not. The highest resolution format that the A7R III can use is 4K/30p.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the A7R III has an electronic viewfinder (3686k dots), while the E-300 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 A7R III offers a wider field of view (100%) than the one in the E-300 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A7R III has a higher magnification (0.78x vs 0.5x), 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-300 and Sony A7R III along with similar information for a selection of comparators.
|Olympus E-300»||optical||n||1.8||134||fixed||n||1/4000s||2.5||Y||n||Olympus E-300|
|Sony A7R III«||3686||n||3.0||1440||tilting||Y||1/8000s||10.0||n||Y||Sony A7R III|
|Canon XT« »||optical||n||1.8||115||fixed||n||1/4000s||3.0||Y||n||Canon XT|
|Leica Digilux 3« »||optical||n||2.5||207||fixed||n||1/4000s||3.0||Y||n||Leica Digilux 3|
|Nikon Z7« »||3690||Y||3.2||2100||tilting||Y||1/8000s||9.0||n||Y||Nikon Z7|
|Olympus E-620« »||optical||n||2.7||230||swivel||n||1/4000s||4.0||Y||Y||Olympus E-620|
|Olympus E-520« »||optical||n||2.7||215||fixed||n||1/4000s||3.5||Y||Y||Olympus E-520|
|Olympus E-410« »||optical||n||2.5||215||fixed||n||1/4000s||3.0||Y||n||Olympus E-410|
|Olympus E-510« »||optical||n||2.5||215||fixed||n||1/4000s||3.0||Y||Y||Olympus E-510|
|Olympus E-330« »||optical||n||2.5||215||tilting||n||1/4000s||3.0||Y||n||Olympus E-330|
|Olympus E-400« »||optical||n||2.5||215||fixed||n||1/4000s||3.0||Y||n||Olympus E-400|
|Olympus E-500« »||optical||n||2.5||215||fixed||n||1/4000s||2.5||Y||n||Olympus E-500|
|Olympus E-1« »||optical||Y||1.8||134||fixed||n||1/4000s||3.0||n||n||Olympus E-1|
|Sony A9« »||3686||n||3.0||1440||tilting||Y||1/8000s||20.0||n||Y||Sony A9|
|Sony A99 II« »||2400||Y||3.0||1229||full-flex||n||1/8000s||12.0||n||Y||Sony A99 II|
|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|
One difference between the cameras concerns the presence of an on-board flash. The E-300 has one, while the A7R III does not. While the built-in flash of the E-300 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 A7R 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 A7R 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-300 writes its imaging data to Compact Flash or xD Picture cards, while the A7R III uses SDXC or Memory Stick PRO Duo cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.
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 Evolt E-300 and Sony Alpha A7R III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Olympus E-300»||Y||-||-||-||-||-||2.0||-||-||-||Olympus E-300|
|Sony A7R III«||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7R III|
|Canon XT« »||Y||-||-||-||-||-||2.0||-||-||-||Canon XT|
|Leica Digilux 3« »||Y||stereo||mono||-||-||-||2.0||-||-||-||Leica Digilux 3|
|Nikon Z7« »||Y||stereo||mono||Y||Y||micro||3.1||Y||-||Y||Nikon Z7|
|Olympus E-620« »||Y||-||-||-||-||-||2.0||-||-||-||Olympus E-620|
|Olympus E-520« »||Y||-||-||-||-||-||2.0||-||-||-||Olympus E-520|
|Olympus E-410« »||Y||-||-||-||-||-||2.0||-||-||-||Olympus E-410|
|Olympus E-510« »||Y||-||-||-||-||-||2.0||-||-||-||Olympus E-510|
|Olympus E-330« »||Y||-||-||-||-||-||2.0||-||-||-||Olympus E-330|
|Olympus E-400« »||Y||-||-||-||-||-||2.0||-||-||-||Olympus E-400|
|Olympus E-500« »||Y||-||-||-||-||-||2.0||-||-||-||Olympus E-500|
|Olympus E-1« »||Y||-||-||-||-||-||2.0||-||-||-||Olympus E-1|
|Sony A9« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y||Sony A9|
|Sony A99 II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y||Sony A99 II|
|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|
It is notable that the A7R III offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the E-300 does not offer wifi capability.
Studio photographers will appreciate that the Sony A7R III (unlike the E-300) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the E-300 and the A7R III have been discontinued, but can regularly be found used on eBay. The E-300 was replaced by the Olympus E-330, while the A7R III was followed by the Sony A7R IV. 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.
So what is the bottom line? Is the Olympus E-300 better than the Sony A7R III or vice versa? A synthesis of the relative strong points of each of the models is listed below.
Advantages of the Olympus Evolt E-300:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Longer lasting: Can take more shots (750 versus 650) on a single battery charge.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More affordable: Was introduced into a lower priced category (75 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in September 2004).
Arguments in favor of the Sony Alpha A7R III:
- More detail: Has more megapixels (42.2 vs 8MP), which boosts linear resolution by 134%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- 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 4K/30p 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.
- 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 0.5x).
- 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 (1440k vs 134k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (10 vs 2.5 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.
- Easier travel charging: Can be conveniently charged via its USB port.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- 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.
- 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.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- More modern: Reflects 13 years and 1 month of technical progress since the E-300 launch.
If the count of individual advantages (bullet points above) is taken as a guide, the A7R III is the clear winner of the contest (29 : 6 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.
How about other alternatives? Do the specifications of the Olympus E-300 and the Sony A7R III 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-300 or the A7R III. 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.
This is why hands-on reviews by experts are important. 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-300»||-||+||o||o||4.5/5||Sep 2004||799||-||Olympus E-300|
|Sony A7R III«||+ +||90/100||4.5/5||5/5||5/5||Oct 2017||3,199||-||Sony A7R III|
|Canon XT« »||80/100||+ +||o||o||-||Feb 2005||899||-||Canon XT|
|Leica Digilux 3« »||-||-||-||-||-||Sep 2006||1,499||-||Leica Digilux 3|
|Nikon Z7« »||+||89/100||4.5/5||4.5/5||5/5||Aug 2018||3,399||Nikon Z7|
|Olympus E-620« »||88/100||72/100||4.5/5||o||5/5||Feb 2009||699||-||Olympus E-620|
|Olympus E-520« »||87/100||+ +||4.5/5||4/5||4.5/5||May 2008||699||-||Olympus E-520|
|Olympus E-410« »||86/100||+ +||4/5||o||4.5/5||Mar 2007||699||-||Olympus E-410|
|Olympus E-510« »||89/100||+ +||3.5/5||o||4.5/5||Mar 2007||799||-||Olympus E-510|
|Olympus E-330« »||-||+||o||3.5/5||-||Jan 2006||999||-||Olympus E-330|
|Olympus E-400« »||85/100||-||4/5||-||4/5||Sep 2006||699||-||Olympus E-400|
|Olympus E-500« »||76/100||+ +||-||-||-||Sep 2005||599||-||Olympus E-500|
|Olympus E-1« »||-||+||o||o||-||Jun 2003||1,699||-||Olympus E-1|
|Sony A9« »||+ +||89/100||5/5||5/5||5/5||Apr 2017||4,499||Sony A9|
|Sony A99 II« »||-||85/100||4.5/5||4.5/5||4.5/5||Sep 2016||3,199||Sony A99 II|
|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|
|Notes: (+ +) 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. Hence, a score should always be seen in the context of the camera's market launch date and its price, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
- Canon 5D Mark II vs Sony A7R III
- Canon M6 Mark II vs Sony A7R III
- Canon T6s vs Olympus E-300
- Nikon 1 J4 vs Olympus E-300
- Nikon D1X vs Sony A7R III
- Nikon D2Xs vs Sony A7R III
- Olympus E-300 vs Pentax Q
- Olympus E-300 vs Sony H300
- Olympus E-300 vs Sony RX1
- Olympus E-510 vs Sony A7R III
- Panasonic GH5s vs Sony A7R III
- Sony A7R III vs Sony HX95
Specifications: Olympus E-300 vs Sony A7R 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-300||Sony A7R III|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Four Thirds lenses||Sony E mount lenses|
|Launch Date||September 2004||October 2017|
|Launch Price||USD 799||USD 3199|
|Sensor Specs||Olympus E-300||Sony A7R III|
|Sensor Format||Four Thirds Sensor||Full Frame Sensor|
|Sensor Size||17.3 x 13.0 mm||35.9 x 24.0 mm|
|Sensor Area||224.9 mm2||861.6 mm2|
|Sensor Diagonal||21.6 mm||43.2 mm|
|Sensor Resolution||8 Megapixels||42.2 Megapixels|
|Image Resolution||3264 x 2448 pixels||7952 x 5304 pixels|
|Pixel Pitch||5.30 μm||4.52 μm|
|Pixel Density||3.55 MP/cm2||4.90 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||no Video||4K/30p Video|
|ISO Setting||100-400 ISO||100-32000 ISO|
|ISO Boost||100-1600 ISO||50-102400 ISO|
|Image Processor||TruePic||BIONZ X|
|DXO Sensor Quality (score)||..||100|
|DXO Color Depth (bits)||..||26.0|
|DXO Dynamic Range (EV)||..||14.7|
|DXO Low Light (ISO)||..||3523|
|Screen Specs||Olympus E-300||Sony A7R III|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||3686k dots|
|LCD Framing||Live View|
|Rear LCD Size||1.8 inch||3.0 inch|
|LCD Resolution||134k dots||1440k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Olympus E-300||Sony A7R III|
|Autofocus System||Phase-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||2.5 shutter flaps/s||10 shutter flaps/s|
|Electronic Shutter||no E-Shutter||YES|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Build-in Flash||no On-Board Flash|
|Storage Medium||CF or XD cards||MS or SDXC cards|
|Second Storage Option||Dual card slots||Dual card slots|
|Connectivity Specs||Olympus E-300||Sony A7R III|
|Studio Flash||no PC Sync||PC Sync socket|
|USB Connector||USB 2.0||USB 3.1|
|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|
|Bluetooth Support||no Bluetooth||Bluetooth built-in|
|Body Specs||Olympus E-300||Sony A7R III|
|Environmental Sealing||Not weather sealed||Weathersealed body|
|Battery Life (CIPA)||750 shots per charge||650 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
147 x 85 x 64 mm
(5.8 x 3.3 x 2.5 in)
127 x 96 x 74 mm
(5.0 x 3.8 x 2.9 in)
|Camera Weight||624 g (22.0 oz)||650 g (22.9 oz)|
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