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Nikon D810 vs Olympus E-P1

The Nikon D810 and the Olympus PEN E-P1 are two digital cameras that were revealed to the public, respectively, in June 2014 and June 2009. The D810 is a DSLR, while the E-P1 is a mirrorless interchangeable lens camera. The cameras are based on a full frame (D810) and a Four Thirds (E-P1) sensor. The Nikon has a resolution of 36.2 megapixels, whereas the Olympus provides 12.2 MP.

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

Headline Specifications
Nikon D810 versus Olympus E-P1
Nikon D810 Olympus E-P1
Digital single lens reflex Mirrorless system camera
Nikon F mount lenses Micro Four Thirds lenses
36.2 MP, Full Frame Sensor 12.2 MP, Four Thirds Sensor
1080/60p Video 720/30p Video
ISO 64-12,800 (32 - 51,200) ISO 100-6,400
Optical viewfinder No viewfinder, LCD framing
3.2 LCD, 1229k dots 3.0 LCD, 230k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
5 shutter flaps per second 3 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodynot weather sealed
1200 shots per battery charge300 shots per battery charge
146 x 123 x 82 mm, 980 g 121 x 70 x 36 mm, 355 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D810 and the Olympus PEN E-P1? 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

The physical size and weight of the Nikon D810 and the Olympus E-P1 are illustrated in the side-by-side display below. 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.

The E-P1 can be obtained in three different colors (black, silver, white), while the D810 is only available in black.

Size Nikon D810 vs Olympus E-P1
Compare D810 versus E-P1 top
Comparison D810 or E-P1 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-P1 is considerably smaller (53 percent) than the Nikon D810. Moreover, the E-P1 is substantially lighter (64 percent) than the D810. It is worth mentioning in this context that the D810 is splash and dust resistant, while the E-P1 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 Nikon Lens Catalog (D810) and the Micro Four Thirds Lens Catalog (E-P1). Mirrorless cameras, such as the E-P1, 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 D810 gets 1200 shots out of its EN-EL15 battery, while the E-P1 can take 300 images on a single charge of its BLS-1 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D810 146 mm 123 mm 82 mm 980 g 1200 Y Jun 2014 3,299i
2.
 
Olympus E-P1 121 mm 70 mm 36 mm 355 g 300 n Jun 2009 799i
3.
 
Canon 5DS 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 i
4.
 
Nikon D850 146 mm 124 mm 79 mm 1005 g 1840 Y Jul 2017 3,299 i
5.
 
Nikon D4S 160 mm 157 mm 91 mm 1350 g 3020 Y Feb 2014 6,499i
6.
 
Nikon D750 141 mm 113 mm 78 mm 750 g 1230 Y Sep 2014 2,299i
7.
 
Nikon Df 144 mm 110 mm 67 mm 760 g 1400 Y Nov 2013 2,749i
8.
 
Nikon D610 141 mm 113 mm 82 mm 850 g 900 Y Oct 2013 1,999 i
9.
 
Nikon D600 141 mm 113 mm 82 mm 850 g 900 Y Sep 2012 2,099i
10.
 
Nikon D800 146 mm 123 mm 82 mm 1000 g 900 Y Feb 2012 2,999i
11.
 
Nikon D800E 146 mm 123 mm 82 mm 1000 g 900 Y Feb 2012 3,299i
12.
 
Nikon D700 147 mm 123 mm 77 mm 1074 g 1000 Y Jul 2008 2,999i
13.
 
Olympus E-P3 122 mm 69 mm 34 mm 369 g 330 n Jun 2011 799i
14.
 
Olympus E-PL2 114 mm 72 mm 42 mm 362 g 280 n Jan 2011 599i
15.
 
Olympus E-PL3 110 mm 64 mm 37 mm 313 g 300 n Jun 2011 599i
16.
 
Olympus E-P2 121 mm 70 mm 36 mm 355 g 300 n Nov 2009 799i
17.
 
Panasonic GH1 124 mm 90 mm 45 mm 385 g 300 n Mar 2009 899i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will naturally be influenced heavily by the price. 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-P1 was launched at a markedly lower price (by 76 percent) than the D810, 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.

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Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Nikon D810 features a full frame sensor and the Olympus E-P1 a Four Thirds sensor. The sensor area in the E-P1 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 D810 has a native 3:2 aspect ratio, while the one in the E-P1 offers a 4:3 aspect.

Nikon D810 and Olympus E-P1 sensor measures

With 36.2MP, the D810 offers a higher resolution than the E-P1 (12.2MP), but the D810 nevertheless has larger individual pixels (pixel pitch of 4.88μm versus 4.29μm for the E-P1) due to its larger sensor. Moreover, the D810 is a much more recent model (by 5 years) than the E-P1, 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 the D810 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Nikon D810 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D810 for good quality output (200 dots per inch) amounts to 36.8 x 24.6 inches or 93.5 x 62.4 cm, for very good quality (250 dpi) 29.4 x 19.6 inches or 74.8 x 49.9 cm, and for excellent quality (300 dpi) 24.5 x 16.4 inches or 62.3 x 41.6 cm. The corresponding values for the Olympus E-P1 are 20.2 x 15.1 inches or 51.2 x 38.4 cm for good quality, 16.1 x 12.1 inches or 41 x 30.7 cm for very good quality, and 13.4 x 10.1 inches or 34.1 x 25.6 cm for excellent quality prints.

The Nikon D810 has a native sensitivity range from ISO 64 to ISO 12800, which can be extended to ISO 32-51200. The corresponding ISO settings for the Olympus PEN E-P1 are ISO 100 to ISO 6400 (no boost).

D810 versus E-P1 MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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. Of the two cameras under review, the D810 provides substantially higher image quality than the E-P1, with an overall score that is 42 points higher. This advantage is based on 4.3 bits higher color depth, 4.4 EV in additional dynamic range, and 2.4 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Nikon D810 Full Frame 36.2 7360 49121080/60p25.714.8285397
2.
 
Olympus E-P1 Four Thirds 12.2 4032 3024720/30p21.410.453655
3.
 
Canon 5DS Full Frame 50.3 8688 57921080/30p24.712.4238187
4.
 
Nikon D850 Full Frame 45.4 8256 55044K/30p26.414.82660100
5.
 
Nikon D4S Full Frame 16.2 4928 32801080/60p24.413.3307489
6.
 
Nikon D750 Full Frame 24.2 6016 40161080/60p24.814.5295693
7.
 
Nikon Df Full Frame 16.2 4928 3280none24.613.1327989
8.
 
Nikon D610 Full Frame 24.2 6016 40161080/30p25.114.4292594
9.
 
Nikon D600 Full Frame 24.2 6016 40161080/30p25.114.2298094
10.
 
Nikon D800 Full Frame 36.2 7360 49121080/30p25.314.4285395
11.
 
Nikon D800E Full Frame 36.2 7360 49121080/30p25.614.3297996
12.
 
Nikon D700 Full Frame 12.1 4256 2832none23.512.2230380
13.
 
Olympus E-P3 Four Thirds 12.2 4032 30241080/60i20.810.153651
14.
 
Olympus E-PL2 Four Thirds 12.2 4032 3024720/30p21.410.257355
15.
 
Olympus E-PL3 Four Thirds 12.2 4032 30241080/60i20.910.349952
16.
 
Olympus E-P2 Four Thirds 12.2 4032 3024720/30p21.510.450556
17.
 
Panasonic GH1 Four Thirds 12.0 4000 30001080/24p21.611.677264

Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the D810 provides a higher video resolution than the E-P1. It can shoot video footage at 1080/60p, while the Olympus is limited to 720/30p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the D810 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the E-P1 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Nikon D810 and Olympus E-P1 in connection with corresponding information for a sample of similar cameras.

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Core Features
    Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
(000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Nikon D810optical Y 3.2 1229 fixed n 1/8000s 5.0 Y n
2.
 
Olympus E-P1none n 3.0 230 fixed n 1/4000s 3.0 n Y
3.
 
Canon 5DSoptical Y 3.2 1040 fixed n 1/8000s 5.0 n n
4.
 
Nikon D850optical Y 3.2 2359 tilting Y 1/8000s 9.0 n n
5.
 
Nikon D4Soptical Y 3.2 921 fixed n 1/8000s 11.0 n n
6.
 
Nikon D750optical Y 3.2 1229 tilting n 1/4000s 6.0 Y n
7.
 
Nikon Dfoptical Y 3.2 921 fixed n 1/4000s 5.5 n n
8.
 
Nikon D610optical Y 3.2 921 fixed n 1/4000s 6.0 Y n
9.
 
Nikon D600optical Y 3.0 921 fixed n 1/4000s 5.5 Y n
10.
 
Nikon D800optical Y 3.2 921 fixed n 1/8000s 4.0 Y n
11.
 
Nikon D800Eoptical Y 3.2 921 fixed n 1/8000s 4.0 Y n
12.
 
Nikon D700optical Y 3.0 922 fixed n 1/8000s 8.0 Y n
13.
 
Olympus E-P3optional n 3.0 614 fixed Y 1/4000s 3.0 Y Y
14.
 
Olympus E-PL2optional n 3.0 460 fixed n 1/4000s 3.0 Y Y
15.
 
Olympus E-PL3optional n 3.0 460 tilting n 1/4000s 5.5 n Y
16.
 
Olympus E-P2optional n 3.0 230 fixed n 1/4000s 3.0 n Y
17.
 
Panasonic GH11440 n 3.0 460 swivel n 1/4000s 3.0 Y n

One difference between the cameras concerns the presence of an on-board flash. The D810 has one, while the E-P1 does not. While the built-in flash of the D810 is not very powerful, it can at times be useful as a fill-in light.

The Nikon D810 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 D810 writes its imaging data to Compact Flash or SDXC cards, while the E-P1 uses SDHC cards. The D810 features dual card slots, which can be very useful in case a memory card fails. In contrast, the E-P1 only has one slot. The D810 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the E-P1 cannot take advantage of Ultra High Speed SD cards.

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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 Nikon D810 and Olympus PEN E-P1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Nikon D810YstereomonoYYmini3.0Y--
2.
 
Olympus E-P1Ystereo---mini2.0---
3.
 
Canon 5DSYmonomonoY-mini3.0---
4.
 
Nikon D850YstereomonoYYmini3.0YYY
5.
 
Nikon D4SYmonomonoYYmini2.0---
6.
 
Nikon D750YstereomonoYYmini2.0Y--
7.
 
Nikon DfY----mini2.0---
8.
 
Nikon D610YmonomonoYYmini2.0---
9.
 
Nikon D600YmonomonoYYmini2.0---
10.
 
Nikon D800YmonomonoYYmini3.0---
11.
 
Nikon D800EYmonomonoYYmini3.0---
12.
 
Nikon D700Y----mini2.0---
13.
 
Olympus E-P3Ystereo---mini2.0---
14.
 
Olympus E-PL2Ystereo---mini2.0---
15.
 
Olympus E-PL3Ystereo---mini2.0---
16.
 
Olympus E-P2Ystereo---mini2.0---
17.
 
Panasonic GH1Ystereo-Y-mini2.0---

It is notable that the D810 has a microphone port, which is missing on the E-P1. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.

Studio photographers will appreciate that the Nikon D810 (unlike the E-P1) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the D810 and the E-P1 have been discontinued, but can regularly be found used on eBay. The E-P1 was replaced by the Olympus E-P2, while the D810 was followed by the Nikon D850. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon and Olympus websites.

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Review summary

So what conclusions can be drawn? Is the Nikon D810 better than the Olympus E-P1 or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Reasons to prefer the Nikon D810:

  • More detail: Offers more megapixels (36.2 vs 12.2MP) with a 76% higher linear resolution.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (42 points) in the DXO overall assessment.
  • Richer colors: Generates images with noticeably better colors (4.3 bits more color depth).
  • More dynamic range: Captures a larger spectrum of light and dark details (4.4 EV of extra DR).
  • Better low-light sensitivity: Requires less light for good images (2.4 stops ISO advantage).
  • Better video: Provides higher definition movie capture (1080/60p vs 720/30p).
  • 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 optical viewfinder for image composition and settings control.
  • 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 (1229k vs 230k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (5 vs 3 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Can take more shots (1200 versus 300) on a single battery charge.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More modern: Reflects 5 years of technical progress since the E-P1 launch.

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Advantages of the Olympus PEN E-P1:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • More compact: Is smaller (121x70mm vs 146x123mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 625g or 64 percent) and is thus easier to take along.
  • 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 (76 percent cheaper at launch).
  • More heavily discounted: Has been around for much longer (launched in June 2009).

If the number of relative strengths (bullet points above) is taken as a guide, the D810 is the clear winner of the match-up (25 : 7 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision 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.

D810 25:07 E-P1

How about other alternatives? Do the specifications of the Nikon D810 and the Olympus E-P1 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the D810 and the E-P1 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

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 (amateurphotographer [AP], cameralabs [CL], 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.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D8105/5..86/1005/54.5/5 Jun 2014 3,299i
2.
 
Olympus E-P1..+66/1004/54.5/5 Jun 2009 799i
3.
 
Canon 5DS..+83/1004.5/54.5/5 Feb 2015 3,699 i
4.
 
Nikon D8504.5/5+ +89/1004.5/55/5 Jul 2017 3,299 i
5.
 
Nikon D4S5/5....4.5/54.5/5 Feb 2014 6,499i
6.
 
Nikon D7505/5+ +90/1004.5/54.5/5 Sep 2014 2,299i
7.
 
Nikon Df4/5..81/1004/54/5 Nov 2013 2,749i
8.
 
Nikon D6104/5+ +87/1004.5/54.5/5 Oct 2013 1,999 i
9.
 
Nikon D6004/5+ +87/1005/54.5/5 Sep 2012 2,099i
10.
 
Nikon D8005/5+ +82/1005/55/5 Feb 2012 2,999i
11.
 
Nikon D800E....84/1005/55/5 Feb 2012 3,299i
12.
 
Nikon D700..89/100+ +4.5/54.5/5 Jul 2008 2,999i
13.
 
Olympus E-P3..83/10074/1004.5/54.5/5 Jun 2011 799i
14.
 
Olympus E-PL23/583/10071/1004.5/54.5/5 Jan 2011 599i
15.
 
Olympus E-PL33/5+ +72/1004.5/54/5 Jun 2011 599i
16.
 
Olympus E-P23/5+69/1004/54.5/5 Nov 2009 799i
17.
 
Panasonic GH1..+ +72/1004.5/54.5/5 Mar 2009 899i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

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

Nikon D810:
Check Ebay offers
Olympus E-P1:
Check Ebay offers

Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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    Specifications: Nikon D810 vs Olympus E-P1

    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 Nikon D810 Olympus E-P1
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Nikon F mount lenses Micro Four Thirds lenses
    Launch Date June 2014 June 2009
    Launch Price USD 3,299 USD 799
    Sensor Specs Nikon D810 Olympus E-P1
    Sensor Technology CMOS CMOS
    Sensor Format Full Frame Sensor Four Thirds Sensor
    Sensor Size 35.9 x 24.0 mm 17.3 x 13.0 mm
    Sensor Area 861.6 mm2 224.9 mm2
    Sensor Diagonal 43.2 mm 21.6 mm
    Crop Factor 1.0x 2.0x
    Sensor Resolution 36.2 Megapixels 12.2 Megapixels
    Image Resolution 7360 x 4912 pixels 4032 x 3024 pixels
    Pixel Pitch 4.88 μm 4.29 μm
    Pixel Density 4.20 MP/cm2 5.42 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 1080/60p Video 720/30p Video
    ISO Setting 64 - 12,800 ISO 100 - 6,400 ISO
    ISO Boost 32 - 51,200 ISO no Enhancement
    Image Processor EXPEED 4 TruePic V
    DXO Sensor Quality (score) 97 55
    DXO Color Depth (bits) 25.7 21.4
    DXO Dynamic Range (EV) 14.8 10.4
    DXO Low Light (ISO) 2853 536
    Screen Specs Nikon D810 Olympus E-P1
    Viewfinder Type Optical viewfinder no viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.70x
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.2inch 3.0inch
    LCD Resolution 1229k dots 230k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Nikon D810 Olympus E-P1
    Focus System Phase-detect AF Contrast-detect AF
    Continuous Shooting 5 shutter flaps/s 3 shutter flaps/s
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Build-in Flash no On-Board Flash
    Storage Medium CF or SDXC cards SDHC cards
    Second Storage Option Dual card slots Single card slot
    UHS card support UHS-I no
    Connectivity Specs Nikon D810 Olympus E-P1
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 3.0 USB 2.0
    HDMI Port mini HDMI mini HDMI
    Microphone Port External MIC port no MIC socket
    Headphone Socket Headphone port no Headphone port
    Wifi Support Wifi built-in no Wifi
    Body Specs Nikon D810 Olympus E-P1
    Environmental SealingWeathersealed bodynot weather sealed
    Battery Type EN-EL15 BLS-1
    Battery Life (CIPA)1200 shots per charge300 shots per charge
    Body Dimensions 146 x 123 x 82 mm
    (5.7 x 4.8 x 3.2 in)
    121 x 70 x 36 mm
    (4.8 x 2.8 x 1.4 in)
    Camera Weight 980 g (34.6 oz) 355 g (12.5 oz)

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