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Nikon D100 vs Olympus E-M5 II

The Nikon D100 and the Olympus OM-D E-M5 Mark II are two enthusiast cameras that were officially introduced, respectively, in February 2002 and February 2015. The D100 is a DSLR, while the E-M5 II is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D100) and a Four Thirds (E-M5 II) sensor. The Nikon has a resolution of 6 megapixels, whereas the Olympus provides 15.9 MP.

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

Headline Specifications
Nikon D100
versus
Olympus E-M5 II
Nikon D100   Olympus E-M5 II
Digital single lens reflex Mirrorless system camera
Nikon F mount lenses Micro Four Thirds lenses
6 MP – APS-C sensor 15.9 MP – Four Thirds sensor
no Video 1080/60p Video
ISO 200-800 (200 - 1,600) ISO 200-25,600
Optical viewfinder Electronic viewfinder (2360k dots)
1.8" LCD – 118k dots 1.8" LCD – 1037k dots
Fixed screen (not touch-sensitive) Swivel touchscreen
3 shutter flaps per second 10 shutter flaps per second
Lens stabilization onlyIn-body stabilization
not weather sealedWeathersealed body
370 shots per battery charge310 shots per battery charge
144 x 116 x 81 mm, 780 g 124 x 85 x 45 mm, 469 g
Nikon D100:
Check Ebay offers
Olympus E-M5 II:
Check Ebay offers

Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D100 and the Olympus OM-D E-M5 Mark II? 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 side-by-side display below illustrates the physical size and weight of the Nikon D100 and the Olympus E-M5 II. 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 width, height and depth dimensions are rounded to the nearest millimeter.

The E-M5 II can be obtained in two different colors (black, silver), while the D100 is only available in black.

Size Nikon D100 vs Olympus E-M5 II
Compare D100 versus E-M5 II top
Comparison D100 or E-M5 II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-M5 II is considerably smaller (37 percent) than the Nikon D100. Moreover, the E-M5 II is substantially lighter (40 percent) than the D100. It is noteworthy in this context that the E-M5 II is splash and dust-proof, while the D100 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 (D100) and the Micro Four Thirds Lens Catalog (E-M5 II). Mirrorless cameras, such as the E-M5 II, 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 D100 gets 370 shots out of its EN-EL3 battery, while the E-M5 II can take 310 images on a single charge of its BLN-1 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

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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 D100 144 mm 116 mm 81 mm 780 g 370 n Feb 2002 1,999i
2.
 
Olympus E-M5 II 124 mm 85 mm 45 mm 469 g 310 Y Feb 2015 1,099i
3.
 
Canon 10D 150 mm 107 mm 75 mm 850 g 500 n Feb 2003 1,999i
4.
 
Nikon D90 132 mm 103 mm 77 mm 703 g 850 n Aug 2008 1,299i
5.
 
Nikon D300 147 mm 114 mm 74 mm 925 g 1000 Y Aug 2007 1,799i
6.
 
Nikon D40 124 mm 94 mm 64 mm 522 g 470 n Nov 2006 499i
7.
 
Nikon D80 132 mm 103 mm 77 mm 668 g 600 n Aug 2006 999i
8.
 
Nikon D50 133 mm 102 mm 76 mm 620 g 400 n Apr 2005 749i
9.
 
Nikon D70s 140 mm 111 mm 78 mm 679 g 500 n Apr 2005 899i
10.
 
Nikon D200 147 mm 113 mm 74 mm 920 g 400 Y Nov 2005 1,699i
11.
 
Nikon D70 140 mm 111 mm 78 mm 679 g 400 n Jan 2004 999i
12.
 
Nikon D1X 157 mm 153 mm 85 mm 1100 g 1200 Y Feb 2001 5,999i
13.
 
Olympus E-M5 III 125 mm 85 mm 50 mm 414 g 310 Y Oct 2019 1,199 i
14.
 
Olympus E-M10 II 120 mm 83 mm 47 mm 390 g 320 n Aug 2015 649i
15.
 
Olympus E-M10 119 mm 82 mm 46 mm 396 g 320 n Jan 2014 699i
16.
 
Olympus E-M1 130 mm 94 mm 63 mm 497 g 350 Y Sep 2013 1,399i
17.
 
Olympus E-M5 122 mm 89 mm 43 mm 425 g 360 Y Feb 2012 1,299i
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. 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-M5 II was launched at a markedly lower price (by 45 percent) than the D100, 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.

Sensor comparison

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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Nikon D100 features an APS-C sensor and the Olympus E-M5 II a Four Thirds sensor. The sensor area in the E-M5 II is 39 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 2.0. The sensor in the D100 has a native 3:2 aspect ratio, while the one in the E-M5 II offers a 4:3 aspect.

Nikon D100 and Olympus E-M5 II sensor measures

Despite having a smaller sensor, the E-M5 II offers a higher resolution of 15.9 megapixels, compared with 6 MP of the D100. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.76μm versus 7.85μm for the D100). However, it should be noted that the E-M5 II is much more recent (by 12 years and 11 months) than the D100, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.

The resolution advantage of the Olympus E-M5 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the E-M5 II for good quality output (200 dots per inch) amounts to 23 x 17.3 inches or 58.5 x 43.9 cm, for very good quality (250 dpi) 18.4 x 13.8 inches or 46.8 x 35.1 cm, and for excellent quality (300 dpi) 15.4 x 11.5 inches or 39 x 29.3 cm. The corresponding values for the Nikon D100 are 15 x 10 inches or 38.2 x 25.4 cm for good quality, 12 x 8 inches or 30.6 x 20.3 cm for very good quality, and 10 x 6.7 inches or 25.5 x 16.9 cm for excellent quality prints.

Unlike the D100, the E-M5 II has the capacity to capture high quality composite images (40MP) 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 D100 has a native sensitivity range from ISO 200 to ISO 800, which can be extended to ISO 200-1600. The corresponding ISO settings for the Olympus OM-D E-M5 Mark II are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.

D100 versus E-M5 II MP

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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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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 D100 APS-C 6.0 3008 2000none20.49.939448
2.
 
Olympus E-M5 II Four Thirds 15.9 4608 34561080/60p23.012.584273
3.
 
Canon 10D APS-C 6.3 3072 2048none21.110.957157
4.
 
Nikon D90 APS-C 12.2 4288 2848720/24p22.712.597773
5.
 
Nikon D300 APS-C 12.2 4288 2848none22.112.067967
6.
 
Nikon D40 APS-C 6.0 3008 2000none21.011.056156
7.
 
Nikon D80 APS-C 10.0 3872 2592none22.111.252461
8.
 
Nikon D50 APS-C 6.0 3008 2000none20.910.856055
9.
 
Nikon D70s APS-C 6.0 3008 2000none20.410.352950
10.
 
Nikon D200 APS-C 10.0 3872 2592none22.311.558364
11.
 
Nikon D70 APS-C 6.0 3008 2000none20.410.352950
12.
 
Nikon D1X APS-C 5.9 3008 1960none........
13.
 
Olympus E-M5 III Four Thirds 20.2 5184 38884K/30p23.313.1132476
14.
 
Olympus E-M10 II Four Thirds 15.9 4608 34561080/60p23.112.584273
15.
 
Olympus E-M10 Four Thirds 15.9 4608 34561080/30p22.812.388472
16.
 
Olympus E-M1 Four Thirds 15.9 4608 34561080/30p23.012.775773
17.
 
Olympus E-M5 Four Thirds 15.9 4608 34561080/60i22.812.382671
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras cannot only take still pictures, but also record videos. The E-M5 II indeed provides for movie recording, while the D100 does not. The highest resolution format that the E-M5 II can use is 1080/60p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the E-M5 II has an electronic viewfinder (2360k dots), while the D100 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 E-M5 II offers a wider field of view (100%) than the one in the D100 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the E-M5 II has a higher magnification (0.74x vs 0.53x), 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 Nikon D100 and Olympus E-M5 II along with similar information for a selection of comparators.

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Core Features
    Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Nikon D100optical Y1.8 / 118 fixed n 1/4000s 3.0/s Y n
2.
 
Olympus E-M5 II2360 n3.0 / 1037 swivel Y 1/8000s 10.0/s n Y
3.
 
Canon 10Doptical Y1.8 / 118 fixed n 1/4000s 3.0/s Y n
4.
 
Nikon D90optical Y3.0 / 920 fixed n 1/4000s 4.5/s Y n
5.
 
Nikon D300optical Y3.0 / 922 fixed n 1/8000s 6.0/s Y n
6.
 
Nikon D40optical n2.5 / 230 fixed n 1/4000s 2.5/s Y n
7.
 
Nikon D80optical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
8.
 
Nikon D50optical n2.0 / 130 fixed n 1/4000s 2.5/s Y n
9.
 
Nikon D70soptical n2.0 / 130 fixed n 1/8000s 3.0/s Y n
10.
 
Nikon D200optical Y2.5 / 230 fixed n 1/8000s 5.0/s Y n
11.
 
Nikon D70optical n1.8 / 130 fixed n 1/8000s 3.0/s Y n
12.
 
Nikon D1Xoptical Y2.0 / 120 fixed n 1/16000s 3.0/s n n
13.
 
Olympus E-M5 III2360 n3.0 / 1040 swivel Y 1/8000s 10.0/s n Y
14.
 
Olympus E-M10 II2360 n3.0 / 1040 tilting Y 1/4000s 8.0/s Y Y
15.
 
Olympus E-M101440 n3.0 / 1037 tilting Y 1/4000s 8.0/s Y Y
16.
 
Olympus E-M12360 n3.0 / 1037 tilting Y 1/8000s 10.0/s n Y
17.
 
Olympus E-M51440 n3.0 / 610 tilting Y 1/4000s 9.0/s n Y
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The D100 has one, while the E-M5 II does not. While the built-in flash of the D100 is not very powerful, it can at times be useful as a fill-in light.

The E-M5 II 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 D100 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-M5 II 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 Olympus E-M5 II 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 D100 writes its imaging data to Compact Flash cards, while the E-M5 II uses SDXC cards.

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 D100 and Olympus OM-D E-M5 Mark II 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
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Nikon D100Y- / ----1.1---
2.
 
Olympus E-M5 IIYstereo / monoY-micro2.0Y--
3.
 
Canon 10DY- / ----1.1---
4.
 
Nikon D90Ymono / mono--mini2.0---
5.
 
Nikon D300Y- / ---mini2.0---
6.
 
Nikon D40Y- / ----2.0---
7.
 
Nikon D80Y- / ----2.0---
8.
 
Nikon D50Y- / ----2.0---
9.
 
Nikon D70sY- / ----2.0---
10.
 
Nikon D200Y- / ----2.0---
11.
 
Nikon D70Y- / ----1.0---
12.
 
Nikon D1XY- / ----FW---
13.
 
Olympus E-M5 IIIYstereo / monoY-micro2.0Y-Y
14.
 
Olympus E-M10 IIYstereo / mono--micro2.0Y--
15.
 
Olympus E-M10Ystereo / mono--micro2.0Y--
16.
 
Olympus E-M1Ystereo / monoY-micro2.0Y--
17.
 
Olympus E-M5Ystereo / mono--mini2.0---

It is notable that the E-M5 II offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the D100 does not provide wifi capability.

Studio photographers will appreciate that the Olympus E-M5 II (unlike the D100) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the D100 and the E-M5 II have been discontinued, but can regularly be found used on eBay. The D100 was replaced by the Nikon D200, while the E-M5 II was followed by the Olympus E-M5 III. 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.

Review summary

So how do things add up? Is there a clear favorite between the Nikon D100 and the Olympus E-M5 II? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

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Advantages of the Nikon D100:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Longer lasting: Can take more shots (370 versus 310) on a single battery charge.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More heavily discounted: Has been available for much longer (launched in February 2002).

ilogo

Arguments in favor of the Olympus OM-D E-M5 Mark II:

  • More detail: Has more megapixels (15.9 vs 6MP), which boosts linear resolution by 59%.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Broader imaging potential: Can capture not only stills but also 1080/60p video.
  • 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 (0.74x vs 0.53x).
  • 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 (1037k vs 118k dots).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • 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.
  • More compact: Is smaller (124x85mm vs 144x116mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 311g or 40 percent) and is thus easier to take along.
  • 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 (2.0 vs 1.1).
  • 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.
  • More affordable: Was introduced into a lower priced category (45 percent cheaper at launch).
  • More modern: Reflects 12 years and 11 months of technical progress since the D100 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the E-M5 II is the clear winner of the contest (25 : 5 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.

D100 05:25 E-M5 II

How about other alternatives? Do the specifications of the Nikon D100 and the Olympus E-M5 II 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 says little about, for example, the shooting experience and imaging performance of the D100 and the E-M5 II 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 table below provides a synthesis of the camera assessments of some of the best known photo-gear 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.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D100......+ +o.. Feb 2002 1,999i
2.
 
Olympus E-M5 II5/5+ +4.5/581/1005/55/5 Feb 2015 1,099i
3.
 
Canon 10D......+ +.... Feb 2003 1,999i
4.
 
Nikon D90..+ +..+ +4/54.5/5 Aug 2008 1,299i
5.
 
Nikon D300..+ +..+ +5/54.5/5 Aug 2007 1,799i
6.
 
Nikon D40..81/100..+ +o4.5/5 Nov 2006 499i
7.
 
Nikon D80..+..+ +o4.5/5 Aug 2006 999i
8.
 
Nikon D50..78/100..+ +4/54.5/5 Apr 2005 749i
9.
 
Nikon D70s..........5/5 Apr 2005 899i
10.
 
Nikon D200..+ +..+ +o.. Nov 2005 1,699i
11.
 
Nikon D70......+ +.... Jan 2004 999i
12.
 
Nikon D1X......+ +.... Feb 2001 5,999i
13.
 
Olympus E-M5 III5/5+5/582/1004.5/54.5/5 Oct 2019 1,199 i
14.
 
Olympus E-M10 II4.5/5+ +..80/1005/55/5 Aug 2015 649i
15.
 
Olympus E-M104/5....80/1005/55/5 Jan 2014 699i
16.
 
Olympus E-M15/5+ +..84/1004.5/54.5/5 Sep 2013 1,399i
17.
 
Olympus E-M54/5+ +..80/1004.5/55/5 Feb 2012 1,299i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated 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. A score, therefore, has to be seen in close connection to the price and market introduction time 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.

Nikon D100:
Check Ebay offers
Olympus E-M5 II:
Check Ebay offers

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 make your choice using the following search menu. 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 D100 vs Olympus E-M5 II

    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 D100 Olympus E-M5 II
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Nikon F mount lenses Micro Four Thirds lenses
    Launch Date February 2002 February 2015
    Launch Price USD 1,999 USD 1,099
    Sensor Specs Nikon D100 Olympus E-M5 II
    Sensor Technology CCD CMOS
    Sensor Format APS-C Sensor Four Thirds Sensor
    Sensor Size 23.7 x 15.6 mm 17.3 x 13.0 mm
    Sensor Area 369.72 mm2 224.9 mm2
    Sensor Diagonal 28.4 mm 21.6 mm
    Crop Factor 1.5x 2.0x
    Sensor Resolution 6 Megapixels 15.9 Megapixels
    Image Resolution 3008 x 2000 pixels 4608 x 3456 pixels
    Pixel Pitch 7.85 μm 3.76 μm
    Pixel Density 1.63 MP/cm2 7.08 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 1080/60p Video
    ISO Setting 200 - 800 ISO 200 - 25,600 ISO
    ISO Boost 200 - 1,600 ISO 100 - 25,600 ISO
    DXO Sensor Quality (score) .. 73
    DXO Color Depth (bits) .. 23.0
    DXO Dynamic Range (EV) .. 12.5
    DXO Low Light (ISO) .. 842
    Screen Specs Nikon D100 Olympus E-M5 II
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.53x 0.74x
    Viewfinder Resolution 2360k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View
    Rear LCD Size 1.8inch 3.0inch
    LCD Resolution 118k dots 1037k dots
    LCD Attachment Fixed screen Swivel screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Nikon D100 Olympus E-M5 II
    Focus System Phase-detect AF Contrast-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 3 shutter flaps/s 10 shutter flaps/s
    Electronic Shutterno E-Shutterup to 1/16000s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium CF cards SDXC cards
    Second Storage Option Single card slot Single card slot
    Connectivity Specs Nikon D100 Olympus E-M5 II
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 1.1 USB 2.0
    HDMI Port no HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Wifi Support no Wifi Wifi built-in
    Body Specs Nikon D100 Olympus E-M5 II
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type EN-EL3 BLN-1
    Battery Life (CIPA)370 shots per charge310 shots per charge
    Body Dimensions 144 x 116 x 81 mm
    (5.7 x 4.6 x 3.2 in)
    124 x 85 x 45 mm
    (4.9 x 3.3 x 1.8 in)
    Camera Weight 780 g (27.5 oz) 469 g (16.5 oz)
    Nikon D100:
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    Olympus E-M5 II:
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