Nikon D850 vs Olympus E-M1 III
The Nikon D850 and the Olympus OM-D E-M1 Mark III are two digital cameras that were announced, respectively, in July 2017 and February 2020. The D850 is a DSLR, while the E-M1 III is a mirrorless interchangeable lens camera. The cameras are based on a full frame (D850) and a Four Thirds (E-M1 III) sensor. The Nikon has a resolution of 45.4 megapixels, whereas the Olympus provides 20.2 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D850 and the Olympus OM-D E-M1 Mark 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 physical size and weight of the Nikon D850 and the Olympus E-M1 III are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth 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 Olympus E-M1 III is considerably smaller (33 percent) than the Nikon D850. Moreover, the E-M1 III is substantially lighter (42 percent) than the D850. 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 Nikon Lens Catalog (D850) and the Micro Four Thirds Lens Catalog (E-M1 III). Mirrorless cameras, such as the E-M1 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 D850 gets 1840 shots out of its EN-EL15a battery, while the E-M1 III can take 420 images on a single charge of its BLH-1 power pack. The power pack in the E-M1 III can be charged via the USB port, which can be very convenient when travelling.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
|1.||Nikon D850||146 mm||124 mm||79 mm||1005 g||1840||Y||Jul 2017||3,299||amazon.com|
|2.||Olympus E-M1 III||134 mm||91 mm||69 mm||580 g||420||Y||Feb 2020||1,799||amazon.com|
|3.||Canon 5D Mark IV||151 mm||116 mm||76 mm||890 g||900||Y||Aug 2016||3,499||amazon.com|
|4.||Canon 5DS||152 mm||116 mm||76 mm||930 g||700||Y||Feb 2015||3,699||amazon.com|
|5.||Canon 5DS R||152 mm||116 mm||76 mm||930 g||700||Y||Feb 2015||3,699||amazon.com|
|6.||Nikon D5||160 mm||159 mm||92 mm||1415 g||3780||Y||Jan 2016||6,499||ebay.com|
|7.||Nikon D500||147 mm||115 mm||81 mm||860 g||1240||Y||Jan 2016||1,999||amazon.com|
|8.||Nikon D810||146 mm||123 mm||82 mm||980 g||1200||Y||Jun 2014||3,299||ebay.com|
|9.||Nikon Df||144 mm||110 mm||67 mm||760 g||1400||Y||Nov 2013||2,749||ebay.com|
|10.||Nikon D610||141 mm||113 mm||82 mm||850 g||900||Y||Oct 2013||1,999||amazon.com|
|11.||Nikon D800||146 mm||123 mm||82 mm||1000 g||900||Y||Feb 2012||2,999||ebay.com|
|12.||Nikon D800E||146 mm||123 mm||82 mm||1000 g||900||Y||Feb 2012||3,299||ebay.com|
|13.||Olympus E-M1X||144 mm||147 mm||75 mm||997 g||870||Y||Jan 2019||2,999||amazon.com|
|14.||Olympus E-M1 II||134 mm||91 mm||67 mm||574 g||440||Y||Sep 2016||1,999||ebay.com|
|15.||OM System OM-1||135 mm||92 mm||73 mm||599 g||520||Y||Feb 2022||2,199||amazon.com|
|16.||Panasonic G90||130 mm||94 mm||77 mm||536 g||290||Y||Apr 2019||999||amazon.com|
|17.||Panasonic G9||137 mm||97 mm||92 mm||658 g||400||Y||Nov 2017||1,699||amazon.com|
|Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The E-M1 III was launched at a markedly lower price (by 45 percent) than the D850, 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. 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 generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels 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 associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Nikon D850 features a full frame sensor and the Olympus E-M1 III a Four Thirds sensor. The sensor area in the E-M1 III is 74 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 2.0. The sensor in the D850 has a native 3:2 aspect ratio, while the one in the E-M1 III offers a 4:3 aspect.
With 45.4MP, the D850 offers a higher resolution than the E-M1 III (20.2MP), but the D850 nevertheless has larger individual pixels (pixel pitch of 4.35μm versus 3.34μm for the E-M1 III) due to its larger sensor. However, the E-M1 III is a much more recent model (by 2 years and 6 months) than the D850, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. 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 Nikon D850 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D850 for good quality output (200 dots per inch) amounts to 41.3 x 27.5 inches or 104.9 x 69.9 cm, for very good quality (250 dpi) 33 x 22 inches or 83.9 x 55.9 cm, and for excellent quality (300 dpi) 27.5 x 18.3 inches or 69.9 x 46.6 cm. The corresponding values for the Olympus E-M1 III 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 E-M1 III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the D850, the E-M1 III has the capacity to capture high quality composite images (80MP) 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 Nikon D850 has a native sensitivity range from ISO 64 to ISO 25600, which can be extended to ISO 32-102400. The corresponding ISO settings for the Olympus OM-D E-M1 Mark III are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 64-25600.
In terms of underlying technology, the D850 is build around a BSI-CMOS sensor, while the E-M1 III uses a CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.
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"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|1.||Nikon D850||Full Frame||45.4||8256||5504||4K/30p||26.4||14.8||2660||100|
|2.||Olympus E-M1 III||Four Thirds||20.2||5184||3888||4K/30p||23.3||13.1||1356||76|
|3.||Canon 5D Mark IV||Full Frame||30.1||6720||4480||4K/30p||24.8||13.6||2995||91|
|4.||Canon 5DS||Full Frame||50.3||8688||5792||1080/30p||24.7||12.4||2381||87|
|5.||Canon 5DS R||Full Frame||50.3||8688||5792||1080/30p||24.6||12.4||2308||86|
|6.||Nikon D5||Full Frame||20.7||5588||3712||4K/30p||25.1||12.3||2343||88|
|8.||Nikon D810||Full Frame||36.2||7360||4912||1080/60p||25.7||14.8||2853||97|
|9.||Nikon Df||Full Frame||16.2||4928||3280||none||24.6||13.1||3279||89|
|10.||Nikon D610||Full Frame||24.2||6016||4016||1080/30p||25.1||14.4||2925||94|
|11.||Nikon D800||Full Frame||36.2||7360||4912||1080/30p||25.3||14.4||2853||95|
|12.||Nikon D800E||Full Frame||36.2||7360||4912||1080/30p||25.6||14.3||2979||96|
|13.||Olympus E-M1X||Four Thirds||20.2||5184||3888||4K/30p||23.2||13.0||1254||75|
|14.||Olympus E-M1 II||Four Thirds||20.2||5184||3888||4K/30p||23.7||12.8||1312||80|
|15.||OM System OM-1||Four Thirds||20.2||5184||3888||4K/60p||23.4||13.4||1553||77|
|16.||Panasonic G90||Four Thirds||20.2||5184||3888||4K/30p||23.2||13.0||1273||75|
|17.||Panasonic G9||Four Thirds||20.2||5184||3888||4K/60p||23.1||12.8||1138||74|
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, and both provide the same movie specifications (4K/30p).
Beyond body and sensor, cameras can and do differ across a range of features. For example, the E-M1 III has an electronic viewfinder (2360k dots), while the D850 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 D850 has a higher magnification than the one of the E-M1 III (0.75x vs 0.74x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Nikon D850, the Olympus E-M1 III, and comparable cameras.
|1.||Nikon D850||optical||Y||3.2 / 2359||tilting||Y||1/8000s||9.0/s||n||n|
|2.||Olympus E-M1 III||2360||n||3.0 / 1037||swivel||Y||1/8000s||18.0/s||n||Y|
|3.||Canon 5D Mark IV||optical||Y||3.2 / 1620||fixed||Y||1/8000s||7.0/s||n||n|
|4.||Canon 5DS||optical||Y||3.2 / 1040||fixed||n||1/8000s||5.0/s||n||n|
|5.||Canon 5DS R||optical||Y||3.2 / 1040||fixed||n||1/8000s||5.0/s||n||n|
|6.||Nikon D5||optical||Y||3.2 / 2359||fixed||Y||1/8000s||14.0/s||n||n|
|7.||Nikon D500||optical||Y||3.2 / 2359||tilting||Y||1/8000s||10.0/s||n||n|
|8.||Nikon D810||optical||Y||3.2 / 1229||fixed||n||1/8000s||5.0/s||Y||n|
|9.||Nikon Df||optical||Y||3.2 / 921||fixed||n||1/4000s||5.5/s||n||n|
|10.||Nikon D610||optical||Y||3.2 / 921||fixed||n||1/4000s||6.0/s||Y||n|
|11.||Nikon D800||optical||Y||3.2 / 921||fixed||n||1/8000s||4.0/s||Y||n|
|12.||Nikon D800E||optical||Y||3.2 / 921||fixed||n||1/8000s||4.0/s||Y||n|
|13.||Olympus E-M1X||2360||n||3.0 / 1037||swivel||Y||1/8000s||18.0/s||n||Y|
|14.||Olympus E-M1 II||2360||n||3.0 / 1037||swivel||Y||1/8000s||18.0/s||n||Y|
|15.||OM System OM-1||5760||n||3.0 / 1640||swivel||Y||1/8000s||10.0/s||n||Y|
|16.||Panasonic G90||2360||n||3.0 / 1240||swivel||Y||1/4000s||9.0/s||Y||Y|
|17.||Panasonic G9||3680||Y||3.0 / 1040||swivel||Y||1/8000s||20.0/s||n||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One feature that is present on the D850, but is missing on the E-M1 III 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-M1 III has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the D850 does not have a selfie-screen.
The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the E-M1 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 Nikon D850 and the Olympus E-M1 III both have 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 D850 writes its imaging data to SDXC or XQD cards, while the E-M1 III uses SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. Both the D850 and the E-M1 III support UHS-II cards, which provide for Ultra High Speed data transfer of up to 312 MB/s (the second slot of the E-M1 III only offers slower UHS-I transfer rates, though).
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 Nikon D850 and Olympus OM-D E-M1 Mark III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Nikon D850||Y||stereo / mono||Y||Y||mini||3.0||Y||Y||Y|
|2.||Olympus E-M1 III||Y||stereo / mono||Y||Y||micro||3.1||Y||-||Y|
|3.||Canon 5D Mark IV||Y||mono / mono||Y||Y||mini||3.0||Y||Y||-|
|4.||Canon 5DS||Y||mono / mono||Y||-||mini||3.0||-||-||-|
|5.||Canon 5DS R||Y||mono / mono||Y||-||mini||3.0||-||-||-|
|6.||Nikon D5||Y||stereo / mono||Y||Y||mini||3.0||-||-||-|
|7.||Nikon D500||Y||stereo / mono||Y||Y||mini||3.0||Y||Y||Y|
|8.||Nikon D810||Y||stereo / mono||Y||Y||mini||3.0||Y||-||-|
|9.||Nikon Df||Y||- / -||-||-||mini||2.0||-||-||-|
|10.||Nikon D610||Y||mono / mono||Y||Y||mini||2.0||-||-||-|
|11.||Nikon D800||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
|12.||Nikon D800E||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
|13.||Olympus E-M1X||Y||stereo / mono||Y||Y||micro||3.0||Y||-||Y|
|14.||Olympus E-M1 II||Y||stereo / mono||Y||Y||micro||3.0||Y||-||-|
|15.||OM System OM-1||Y||stereo / mono||Y||Y||micro||3.0||Y||-||Y|
|16.||Panasonic G90||Y||stereo / mono||Y||Y||micro||2.0||Y||-||Y|
|17.||Panasonic G9||Y||stereo / mono||Y||Y||full||3.0||Y||-||Y|
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
Both the D850 and the E-M1 III are recent models that are part of the current product line-up. The D850 replaced the earlier Nikon D810, while the E-M1 III followed on from the Olympus E-M1 II. Further information on the features and operation of the D850 and E-M1 III can be found, respectively, in the Nikon D850 Manual (free pdf) or the online Olympus E-M1 III Manual.
So what conclusions can be drawn? Which of the two cameras – the Nikon D850 or the Olympus E-M1 III – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.
Arguments in favor of the Nikon D850:
- More detail: Offers more megapixels (45.4 vs 20.2MP) with a 53% higher linear resolution.
- Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
- Richer colors: The pixel size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.75x vs 0.74x).
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (2359k vs 1037k dots).
- Longer lasting: Can take more shots (1840 versus 420) on a single battery charge.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More heavily discounted: Has been available for much longer (launched in July 2017).
Reasons to prefer the Olympus OM-D E-M1 Mark III:
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- 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 flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (18 vs 9 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- More compact: Is smaller (134x91mm vs 146x124mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 425g or 42 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.
- More affordable: Was introduced into a lower priced category (45 percent cheaper at launch).
- More modern: Reflects 2 years and 6 months of technical progress since the D850 launch.
If the number of relative strengths (bullet points above) is taken as a guide, the E-M1 III comes out slightly ahead of the D850 (14 : 13 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 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 Nikon D850 and the Olympus E-M1 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 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 D850 and the E-M1 III in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.
This is why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular 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.
|1.||Nikon D850||4.5/5||+ +||5/5||89/100||4.5/5||5/5||Jul 2017||3,299||amazon.com|
|2.||Olympus E-M1 III||5/5||..||5/5||83/100||4.5/5||4/5||Feb 2020||1,799||amazon.com|
|3.||Canon 5D Mark IV||4.5/5||+ +||4/5||87/100||4.5/5||4.5/5||Aug 2016||3,499||amazon.com|
|4.||Canon 5DS||..||+||..||83/100||4.5/5||4.5/5||Feb 2015||3,699||amazon.com|
|5.||Canon 5DS R||5/5||+||..||83/100||5/5||4.5/5||Feb 2015||3,699||amazon.com|
|6.||Nikon D5||..||..||4/5||89/100||4.5/5||5/5||Jan 2016||6,499||ebay.com|
|7.||Nikon D500||5/5||+ +||4.7/5||91/100||4.5/5||5/5||Jan 2016||1,999||amazon.com|
|8.||Nikon D810||5/5||..||5/5||86/100||5/5||4.5/5||Jun 2014||3,299||ebay.com|
|9.||Nikon Df||4/5||..||..||81/100||4/5||4/5||Nov 2013||2,749||ebay.com|
|10.||Nikon D610||4/5||+ +||..||87/100||4.5/5||4.5/5||Oct 2013||1,999||amazon.com|
|11.||Nikon D800||5/5||+ +||..||82/100||5/5||5/5||Feb 2012||2,999||ebay.com|
|12.||Nikon D800E||..||..||..||84/100||5/5||5/5||Feb 2012||3,299||ebay.com|
|13.||Olympus E-M1X||4.5/5||o||5/5||85/100||4.5/5||..||Jan 2019||2,999||amazon.com|
|14.||Olympus E-M1 II||5/5||+ +||5/5||85/100||4.5/5||4.5/5||Sep 2016||1,999||ebay.com|
|15.||OM System OM-1||5/5||..||..||87/100||5/5||4.5/5||Feb 2022||2,199||amazon.com|
|16.||Panasonic G90||4.5/5||+||4.5/5||83/100||4.5/5||4.5/5||Apr 2019||999||amazon.com|
|17.||Panasonic G9||..||+ +||5/5||85/100||5/5||5/5||Nov 2017||1,699||amazon.com|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
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 use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon G16 vs Nikon D850
- Fujifilm X-A1 vs Nikon D850
- Nikon D5200 vs Nikon D850
- Nikon D850 vs Olympus E-P1
- Nikon D850 vs Panasonic GX850
- Nikon D850 vs Panasonic L1
- Nikon P1000 vs Olympus E-M1 III
- Olympus E-520 vs Olympus E-M1 III
- Olympus E-M1 III vs Panasonic LX100
- Olympus E-M1 III vs Panasonic S1H
- Olympus E-M1 III vs Panasonic TZ200
- Olympus E-M1 III vs Pentax K-1
Specifications: Nikon D850 vs Olympus E-M1 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||Nikon D850||Olympus E-M1 III|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Nikon F mount lenses||Micro Four Thirds lenses|
|Launch Date||July 2017||February 2020|
|Launch Price||USD 3,299||USD 1,799|
|Sensor Specs||Nikon D850||Olympus E-M1 III|
|Sensor Format||Full Frame Sensor||Four Thirds Sensor|
|Sensor Size||35.9 x 23.9 mm||17.3 x 13.0 mm|
|Sensor Area||858.01 mm2||224.9 mm2|
|Sensor Diagonal||43.1 mm||21.6 mm|
|Sensor Resolution||45.4 Megapixels||20.2 Megapixels|
|Image Resolution||8256 x 5504 pixels||5184 x 3888 pixels|
|Pixel Pitch||4.35 μm||3.34 μm|
|Pixel Density||5.30 MP/cm2||8.96 MP/cm2|
|Moiré control||no AA filter||no AA filter|
|Movie Capability||4K/30p Video||4K/30p Video|
|ISO Setting||64 - 25,600 ISO||200 - 25,600 ISO|
|ISO Boost||32 - 102,400 ISO||64 - 25,600 ISO|
|Image Processor||EXPEED 5||TruePic IX|
|DXO Sensor Quality (score)||100||..|
|DXO Color Depth (bits)||26.4||..|
|DXO Dynamic Range (EV)||14.8||..|
|DXO Low Light (ISO)||2660||..|
|Screen Specs||Nikon D850||Olympus E-M1 III|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||2360k dots|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.2inch||3.0inch|
|LCD Resolution||2359k dots||1037k dots|
|LCD Attachment||Tilting screen||Swivel screen|
|Shooting Specs||Nikon D850||Olympus E-M1 III|
|Focus System||Phase-detect AF||On-Sensor Phase-detect|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000s||1/8000s|
|Continuous Shooting||9 shutter flaps/s||18 shutter flaps/s|
|Shutter Life Expectancy||200 000 actuations||400 000 actuations|
|Electronic Shutter||no E-Shutter||up to 1/32000s|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||no On-Board Flash||no On-Board Flash|
|Storage Medium||SDXC or XQD cards||SDXC cards|
|Single or Dual Card Slots||Dual card slots||Dual card slots|
|UHS card support||UHS-II||Single UHS-II|
|Connectivity Specs||Nikon D850||Olympus E-M1 III|
|Studio Flash||PC Sync socket||PC Sync socket|
|USB Connector||USB 3.0||USB 3.1|
|HDMI Port||mini HDMI||micro HDMI|
|Microphone Port||External MIC port||External MIC port|
|Headphone Socket||Headphone port||Headphone port|
|Wifi Support||Wifi built-in||Wifi built-in|
|Near-Field Communication||NFC built-in||no NFC|
|Bluetooth Support||Bluetooth built-in||Bluetooth built-in|
|Body Specs||Nikon D850||Olympus E-M1 III|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||1840 shots per charge||420 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
146 x 124 x 79 mm
(5.7 x 4.9 x 3.1 in)
134 x 91 x 69 mm
(5.3 x 3.6 x 2.7 in)
|Camera Weight||1005 g (35.5 oz)||580 g (20.5 oz)|
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