Nikon D3100 vs Olympus E-M1
The Nikon D3100 and the Olympus OM-D E-M1 are two digital cameras that were officially introduced, respectively, in August 2010 and September 2013. The D3100 is a DSLR, while the E-M1 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D3100) and a Four Thirds (E-M1) sensor. The Nikon has a resolution of 14.2 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.
Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D3100 and the Olympus OM-D E-M1? 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
An illustration of the physical size and weight of the Nikon D3100 and the Olympus E-M1 is provided 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.
The D3100 can be obtained in two different colors (black, red), while the E-M1 is also available in two color-versions, but different ones (black, silver).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-M1 is somewhat larger (3 percent) than the Nikon D3100. However, the E-M1 is slightly lighter (2 percent) than the D3100. It is noteworthy in this context that the E-M1 is splash and dust-proof, while the D3100 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 (D3100) and the Micro Four Thirds Lens Catalog (E-M1). Mirrorless cameras, such as the E-M1, 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 D3100 gets 550 shots out of its Nikon EN-EL14 battery, while the E-M1 can take 350 images on a single charge of its Olympus 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.
# | Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price (USD) |
Street Price |
|
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Nikon D3100 | 124 mm | 96 mm | 75 mm | 505 g | 550 | n | Aug 2010 | 599 | ebay.com | |
2. | Olympus E-M1 | 130 mm | 94 mm | 63 mm | 497 g | 350 | Y | Sep 2013 | 1,399 | ebay.com | |
3. | Nikon D5600 | 124 mm | 97 mm | 70 mm | 465 g | 970 | n | Nov 2016 | 699 | ebay.com | |
4. | Nikon D3400 | 124 mm | 98 mm | 76 mm | 445 g | 1200 | n | Aug 2016 | 499 | ebay.com | |
5. | Nikon D3300 | 124 mm | 98 mm | 76 mm | 430 g | 700 | n | Jan 2014 | 499 | ebay.com | |
6. | Nikon D3200 | 125 mm | 96 mm | 77 mm | 505 g | 540 | n | Apr 2012 | 599 | ebay.com | |
7. | Nikon D5100 | 128 mm | 97 mm | 79 mm | 560 g | 660 | n | Apr 2011 | 749 | ebay.com | |
8. | Nikon D3000 | 126 mm | 97 mm | 64 mm | 536 g | 500 | n | Jul 2009 | 599 | ebay.com | |
9. | Nikon D5000 | 127 mm | 104 mm | 80 mm | 590 g | 510 | n | Apr 2009 | 749 | ebay.com | |
10. | Nikon D60 | 126 mm | 94 mm | 64 mm | 522 g | 500 | n | Jan 2008 | 629 | ebay.com | |
11. | Nikon D40X | 124 mm | 94 mm | 64 mm | 522 g | 520 | n | Mar 2007 | 729 | ebay.com | |
12. | Nikon D40 | 124 mm | 94 mm | 64 mm | 522 g | 470 | n | Nov 2006 | 499 | ebay.com | |
13. | Olympus E-M1 II | 134 mm | 91 mm | 67 mm | 574 g | 440 | Y | Sep 2016 | 1,999 | ebay.com | |
14. | Olympus E-M5 II | 124 mm | 85 mm | 45 mm | 469 g | 310 | Y | Feb 2015 | 1,099 | ebay.com | |
15. | Olympus E-P5 | 122 mm | 69 mm | 37 mm | 420 g | 330 | n | May 2013 | 999 | ebay.com | |
16. | Olympus E-M5 | 122 mm | 89 mm | 43 mm | 425 g | 360 | Y | Feb 2012 | 1,299 | ebay.com | |
17. | Panasonic GH4 | 133 mm | 93 mm | 84 mm | 560 g | 500 | Y | Feb 2014 | 1,499 | ebay.com | |
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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The D3100 was launched at a markedly lower price (by 57 percent) than the E-M1, 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.
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 associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Nikon D3100 features an APS-C sensor and the Olympus E-M1 a Four Thirds sensor. The sensor area in the E-M1 is 37 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 D3100 has a native 3:2 aspect ratio, while the one in the E-M1 offers a 4:3 aspect.
Despite having a smaller sensor, the E-M1 offers a higher resolution of 15.9 megapixels, compared with 14.2 MP of the D3100. 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 5.01μm for the D3100). However, it should be noted that the E-M1 is much more recent (by 3 years) than the D3100, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that the E-M1 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The E-M1 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Nikon D3100 has a native sensitivity range from ISO 100 to ISO 3200, which can be extended to ISO 100-12800. The corresponding ISO settings for the Olympus OM-D E-M1 are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under consideration, the E-M1 has a markedly higher DXO score than the D3100 (overall score 6 points higher), which will translate into better image quality. The advantage is based on 0.5 bits higher color depth, 1.4 EV in additional dynamic range, and 0.3 stops of reduced low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
# | Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
|
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Nikon D3100 | APS-C | 14.2 | 4608 | 3072 | 1080/24p | 22.5 | 11.3 | 919 | 67 | |
2. | Olympus E-M1 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 23.0 | 12.7 | 757 | 73 | |
3. | Nikon D5600 | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 24.1 | 14.0 | 1306 | 84 | |
4. | Nikon D3400 | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 24.8 | 13.9 | 1192 | 86 | |
5. | Nikon D3300 | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 24.3 | 12.8 | 1385 | 82 | |
6. | Nikon D3200 | APS-C | 24.1 | 6016 | 4000 | 1080/30p | 24.1 | 13.2 | 1131 | 81 | |
7. | Nikon D5100 | APS-C | 16.1 | 4928 | 3264 | 1080/30p | 23.5 | 13.6 | 1183 | 80 | |
8. | Nikon D3000 | APS-C | 10.0 | 3872 | 2592 | none | 22.3 | 11.1 | 563 | 62 | |
9. | Nikon D5000 | APS-C | 12.2 | 4288 | 2848 | 720/24p | 22.7 | 12.5 | 868 | 72 | |
10. | Nikon D60 | APS-C | 10.0 | 3872 | 2592 | none | 22.5 | 11.4 | 562 | 65 | |
11. | Nikon D40X | APS-C | 10.0 | 3872 | 2592 | none | 22.4 | 11.4 | 516 | 63 | |
12. | Nikon D40 | APS-C | 6.0 | 3008 | 2000 | none | 21.0 | 11.0 | 561 | 56 | |
13. | Olympus E-M1 II | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.7 | 12.8 | 1312 | 80 | |
14. | Olympus E-M5 II | Four Thirds | 15.9 | 4608 | 3456 | 1080/60p | 23.0 | 12.5 | 842 | 73 | |
15. | Olympus E-P5 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 22.8 | 12.4 | 895 | 72 | |
16. | Olympus E-M5 | Four Thirds | 15.9 | 4608 | 3456 | 1080/60i | 22.8 | 12.3 | 826 | 71 | |
17. | Panasonic GH4 | Four Thirds | 15.9 | 4608 | 3456 | 4K/30p | 23.2 | 12.8 | 791 | 74 |
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the E-M1 provides a faster frame rate than the D3100. It can shoot movie footage at 1080/30p, while the Nikon is limited to 1080/24p.
Feature comparison
Beyond body and sensor, cameras can and do differ across a range of features. For example, the E-M1 has an electronic viewfinder (2360k dots), while the D3100 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-M1 offers a wider field of view (100%) than the one in the D3100 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the E-M1 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 following table reports on some other key feature differences and similarities of the Nikon D3100, the Olympus E-M1, and comparable cameras.
# | 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 D3100 | optical | n | 3.0 / 230 | fixed | n | 1/4000s | 3.0/s | Y | n | |
2. | Olympus E-M1 | 2360 | n | 3.0 / 1037 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
3. | Nikon D5600 | optical | n | 3.2 / 1037 | swivel | Y | 1/4000s | 5.0/s | Y | n | |
4. | Nikon D3400 | optical | n | 3.0 / 921 | fixed | n | 1/4000s | 5.0/s | Y | n | |
5. | Nikon D3300 | optical | n | 3.0 / 921 | fixed | n | 1/4000s | 5.0/s | Y | n | |
6. | Nikon D3200 | optical | n | 3.0 / 921 | fixed | n | 1/4000s | 4.0/s | Y | n | |
7. | Nikon D5100 | optical | n | 3.0 / 921 | swivel | n | 1/4000s | 4.0/s | Y | n | |
8. | Nikon D3000 | optical | n | 3.0 / 230 | fixed | n | 1/4000s | 3.0/s | Y | n | |
9. | Nikon D5000 | optical | n | 2.7 / 230 | full-flex | n | 1/4000s | 4.0/s | Y | n | |
10. | Nikon D60 | optical | n | 2.5 / 230 | fixed | n | 1/4000s | 3.0/s | Y | n | |
11. | Nikon D40X | optical | n | 2.5 / 230 | fixed | n | 1/4000s | 3.0/s | Y | n | |
12. | Nikon D40 | optical | n | 2.5 / 230 | fixed | n | 1/4000s | 2.5/s | Y | n | |
13. | Olympus E-M1 II | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 18.0/s | n | Y | |
14. | Olympus E-M5 II | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
15. | Olympus E-P5 | optional | n | 3.0 / 1037 | tilting | Y | 1/8000s | 9.0/s | Y | Y | |
16. | Olympus E-M5 | 1440 | n | 3.0 / 610 | tilting | Y | 1/4000s | 9.0/s | n | Y | |
17. | Panasonic GH4 | 2359 | n | 3.0 / 1036 | swivel | Y | 1/8000s | 12.0/s | Y | n | |
Note: *) 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 D3100 has one, while the E-M1 does not. While the built-in flash of the D3100 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 E-M1 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-M1 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.
Concerning the storage of imaging data, both the D3100 and the E-M1 write their files to SDXC cards. The E-M1 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the D3100 cannot take advantage of Ultra High Speed SD 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 D3100 and Olympus OM-D E-M1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
# | Camera Model |
Hotshoe Port |
Internal Mic / Speaker |
Microphone Port |
Headphone Port |
HDMI Port |
USB Port |
WiFi Support |
NFC Support |
Bluetooth Support |
|
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Nikon D3100 | Y | mono / mono | - | - | mini | 2.0 | - | - | - | |
2. | Olympus E-M1 | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | - | |
3. | Nikon D5600 | Y | stereo / mono | Y | - | mini | 2.0 | Y | Y | Y | |
4. | Nikon D3400 | Y | mono / mono | - | - | mini | 2.0 | - | - | Y | |
5. | Nikon D3300 | Y | mono / mono | Y | - | mini | 2.0 | - | - | - | |
6. | Nikon D3200 | Y | mono / mono | Y | - | mini | 2.0 | - | - | - | |
7. | Nikon D5100 | Y | mono / mono | Y | - | mini | 2.0 | - | - | - | |
8. | Nikon D3000 | Y | - / - | - | - | - | 2.0 | - | - | - | |
9. | Nikon D5000 | Y | mono / mono | - | - | mini | 2.0 | - | - | - | |
10. | Nikon D60 | Y | - / - | - | - | - | 2.0 | - | - | - | |
11. | Nikon D40X | Y | - / - | - | - | - | 2.0 | - | - | - | |
12. | Nikon D40 | Y | - / - | - | - | - | 2.0 | - | - | - | |
13. | Olympus E-M1 II | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | - | |
14. | Olympus E-M5 II | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | - | |
15. | Olympus E-P5 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
16. | Olympus E-M5 | Y | stereo / mono | - | - | mini | 2.0 | - | - | - | |
17. | Panasonic GH4 | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - |
It is notable that the E-M1 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the D3100 does not provide wifi capability.
Studio photographers will appreciate that the Olympus E-M1 (unlike the D3100) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the D3100 and the E-M1 have been discontinued, but can regularly be found used on ebay. The D3100 was replaced by the Nikon D3200, while the E-M1 was followed by the Olympus E-M1 II. Further information on the features and operation of the D3100 and E-M1 can be found, respectively, in the Nikon D3100 Manual (free pdf) or the online Olympus E-M1 Manual.
Review summary
So what is the bottom line? Is there a clear favorite between the Nikon D3100 and the Olympus E-M1? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.
Arguments in favor of the Nikon D3100:
- 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 (550 versus 350) 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 (57 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in August 2010).
Reasons to prefer the Olympus OM-D E-M1:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better image quality: Scores markedly higher (6 points) in the DXO overall evaluation.
- More dynamic range: Captures a broader range of light and dark details (1.4 EV of extra DR).
- Better video: Provides higher movie framerates (1080/30p versus 1080/24p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Better sound: Can connect to an external microphone for higher quality sound recording.
- 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).
- More detailed LCD: Has a higher resolution rear screen (1037k vs 230k 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 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.
- 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.
- 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.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More modern: Reflects 3 years of technical progress since the D3100 launch.
If the number of relative strengths (bullet points above) is taken as a guide, the E-M1 is the clear winner of the contest (23 : 6 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.
How about other alternatives? Do the specifications of the Nikon D3100 and the Olympus E-M1 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the D3100 or the E-M1. 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.
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.
# | Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price (USD) |
Street Price |
|
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Nikon D3100 | 5/5 | + + | .. | 72/100 | 4.5/5 | 4.5/5 | Aug 2010 | 599 | ebay.com | |
2. | Olympus E-M1 | 5/5 | + + | .. | 84/100 | 4.5/5 | 4.5/5 | Sep 2013 | 1,399 | ebay.com | |
3. | Nikon D5600 | 4/5 | .. | 4/5 | 79/100 | 4.5/5 | 4/5 | Nov 2016 | 699 | ebay.com | |
4. | Nikon D3400 | 4/5 | + | 4/5 | 76/100 | 4/5 | 4.5/5 | Aug 2016 | 499 | ebay.com | |
5. | Nikon D3300 | 3/5 | + | .. | 77/100 | 4.5/5 | 4.5/5 | Jan 2014 | 499 | ebay.com | |
6. | Nikon D3200 | 5/5 | + + | .. | 73/100 | 4.5/5 | 4.5/5 | Apr 2012 | 599 | ebay.com | |
7. | Nikon D5100 | 5/5 | + + | .. | 76/100 | 4.5/5 | 4.5/5 | Apr 2011 | 749 | ebay.com | |
8. | Nikon D3000 | .. | + | .. | 72/100 | 4/5 | 4.5/5 | Jul 2009 | 599 | ebay.com | |
9. | Nikon D5000 | .. | + + | .. | 75/100 | 4/5 | 4.5/5 | Apr 2009 | 749 | ebay.com | |
10. | Nikon D60 | .. | 80/100 | .. | + + | 4/5 | 4.5/5 | Jan 2008 | 629 | ebay.com | |
11. | Nikon D40X | .. | 79/100 | .. | + + | 4/5 | 4/5 | Mar 2007 | 729 | ebay.com | |
12. | Nikon D40 | .. | 81/100 | .. | + + | o | 4.5/5 | Nov 2006 | 499 | ebay.com | |
13. | Olympus E-M1 II | 5/5 | + + | 5/5 | 85/100 | 4.5/5 | 4.5/5 | Sep 2016 | 1,999 | ebay.com | |
14. | Olympus E-M5 II | 5/5 | + + | 4.5/5 | 81/100 | 5/5 | 5/5 | Feb 2015 | 1,099 | ebay.com | |
15. | Olympus E-P5 | 5/5 | + + | .. | 78/100 | 4.5/5 | 5/5 | May 2013 | 999 | ebay.com | |
16. | Olympus E-M5 | 4/5 | + + | .. | 80/100 | 4.5/5 | 5/5 | Feb 2012 | 1,299 | ebay.com | |
17. | Panasonic GH4 | 5/5 | + + | .. | 85/100 | 5/5 | 5/5 | Feb 2014 | 1,499 | ebay.com | |
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. |
The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and 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 make a corresponding selection in the search boxes below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
- Canon G7 X Mark II vs Nikon D3100
- Canon T100 vs Olympus E-M1
- Canon T4i vs Olympus E-M1
- Nikon 1 V3 vs Nikon D3100
- Nikon D3100 vs Nikon D3S
- Nikon D3100 vs Olympus PEN-F
- Nikon D3100 vs Pentax K-3 II
- Nikon D3100 vs Sony ZV-1
- Nikon D70 vs Olympus E-M1
- Olympus E-520 vs Olympus E-M1
- Olympus E-M1 vs Panasonic G1
- Olympus E-M1 vs Sony HX350
Specifications: Nikon D3100 vs Olympus E-M1
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 D3100 | Olympus E-M1 |
---|---|---|
Camera Type | Digital single lens reflex | Mirrorless system camera |
Camera Lens | Nikon F mount lenses | Micro Four Thirds lenses |
Launch Date | August 2010 | September 2013 |
Launch Price | USD 599 | USD 1,399 |
Sensor Specs | Nikon D3100 | Olympus E-M1 |
Sensor Technology | CMOS | CMOS |
Sensor Format | APS-C Sensor | Four Thirds Sensor |
Sensor Size | 23.1 x 15.4 mm | 17.3 x 13.0 mm |
Sensor Area | 355.74 mm2 | 224.9 mm2 |
Sensor Diagonal | 27.8 mm | 21.6 mm |
Crop Factor | 1.5x | 2.0x |
Sensor Resolution | 14.2 Megapixels | 15.9 Megapixels |
Image Resolution | 4608 x 3072 pixels | 4608 x 3456 pixels |
Pixel Pitch | 5.01 μm | 3.76 μm |
Pixel Density | 3.98 MP/cm2 | 7.08 MP/cm2 |
Moiré control | Anti-Alias filter | no AA filter |
Movie Capability | 1080/24p Video | 1080/30p Video |
ISO Setting | 100 - 3,200 ISO | 200 - 25,600 ISO |
ISO Boost | 100 - 12,800 ISO | 100 - 25,600 ISO |
Image Processor | EXPEED 2 | TruePIC VII |
DXO Sensor Quality (score) | 67 | 73 |
DXO Color Depth (bits) | 22.5 | 23.0 |
DXO Dynamic Range (EV) | 11.3 | 12.7 |
DXO Low Light (ISO) | 919 | 757 |
Screen Specs | Nikon D3100 | Olympus E-M1 |
Viewfinder Type | Optical viewfinder | Electronic viewfinder |
Viewfinder Field of View | 95% | 100% |
Viewfinder Magnification | 0.53x | 0.74x |
Viewfinder Resolution | 2360k dots | |
LCD Framing | Live View | Live View |
Rear LCD Size | 3.0inch | 3.0inch |
LCD Resolution | 230k dots | 1037k dots |
LCD Attachment | Fixed screen | Tilting screen |
Touch Input | no Touchscreen | Touchscreen |
Shooting Specs | Nikon D3100 | Olympus E-M1 |
Focus System | Phase-detect AF | On-Sensor Phase-detect |
Manual Focusing Aid | no Peaking Feature | Focus Peaking |
Max Shutter Speed (mechanical) | 1/4000s | 1/8000s |
Continuous Shooting | 3 shutter flaps/s | 10 shutter flaps/s |
Shutter Life Expectancy | 100 000 actuations | 150 000 actuations |
Electronic Shutter | no E-Shutter | YES |
Time-Lapse Photography | no Intervalometer | Intervalometer built-in |
Image Stabilization | Lens stabilization only | In-body stabilization |
Fill Flash | Built-in Flash | no On-Board Flash |
Storage Medium | SDXC cards | SDXC cards |
Single or Dual Card Slots | Single card slot | Single card slot |
UHS card support | no | UHS-I |
Connectivity Specs | Nikon D3100 | Olympus E-M1 |
External Flash | Hotshoe | Hotshoe |
Studio Flash | no PC Sync | PC Sync socket |
USB Connector | USB 2.0 | USB 2.0 |
HDMI Port | mini HDMI | micro HDMI |
Microphone Port | no MIC socket | External MIC port |
Wifi Support | no Wifi | Wifi built-in |
Body Specs | Nikon D3100 | Olympus E-M1 |
Environmental Sealing | not weather sealed | Weathersealed body |
Battery Type | Nikon EN-EL14 | Olympus BLN-1 |
Battery Life (CIPA) | 550 shots per charge | 350 shots per charge |
Body Dimensions |
124 x 96 x 75 mm (4.9 x 3.8 x 3.0 in) |
130 x 94 x 63 mm (5.1 x 3.7 x 2.5 in) |
Camera Weight | 505 g (17.8 oz) | 497 g (17.5 oz) |
Did you notice an error on this page? If so, please get in touch, so that we can correct the information.