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Nikon D3100 vs Olympus E-1

The Nikon D3100 and the Olympus E-1 are two digital cameras that were revealed to the public, respectively, in August 2010 and June 2003. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (D3100) and a Four Thirds (E-1) sensor. The Nikon has a resolution of 14.2 megapixels, whereas the Olympus provides 4.9 MP.

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

Headline Specifications
Nikon D3100
versus
Olympus E-1
Nikon D3100   Olympus E-1
Digital single lens reflex Digital single lens reflex
Nikon F mount lenses Four Thirds lenses
14.2 MP – APS-C sensor 4.9 MP – Four Thirds sensor
1080/24p Video no Video
ISO 100-3,200 (100 - 12,800) ISO 100-800 (100 - 3,200)
Optical viewfinder Optical viewfinder
3.0" LCD – 230k dots 1.8" LCD – 134k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
3 shutter flaps per second 3 shutter flaps per second
not weather sealedWeathersealed body
550 shots per battery charge750 shots per battery charge
124 x 96 x 75 mm, 505 g 141 x 104 x 81 mm, 738 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D3100 and the Olympus E-1? 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.

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Body comparison

The side-by-side display below illustrates the physical size and weight of the Nikon D3100 and the Olympus E-1. 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 D3100 can be obtained in two different colors (black, red), while the E-1 is only available in black.

Size Nikon D3100 vs Olympus E-1
Compare D3100 versus E-1 top
Comparison D3100 or E-1 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-1 is notably larger (23 percent) than the Nikon D3100. Moreover, the E-1 is substantially heavier (46 percent) than the D3100. It is noteworthy in this context that the E-1 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 Four Thirds Lens Catalog (E-1).

Concerning battery life, the D3100 gets 550 shots out of its Nikon EN-EL14 battery, while the E-1 can take 750 images on a single charge of its Olympus BLM-1 power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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
# image 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 599ebay.com
2.
 
Olympus E-1 141 mm 104 mm 81 mm 738 g 750 Y Jun 2003 1,699ebay.com
3.
 
Leica Digilux 3 146 mm 87 mm 77 mm 606 g 750 n Sep 2006 1,499ebay.com
4.
 
Nikon D3200 125 mm 96 mm 77 mm 505 g 540 n Apr 2012 599ebay.com
5.
 
Nikon D5100 128 mm 97 mm 79 mm 560 g 660 n Apr 2011 749ebay.com
6.
 
Nikon D7000 132 mm 105 mm 77 mm 780 g 1050 Y Sep 2010 1,499ebay.com
7.
 
Nikon D3000 126 mm 97 mm 64 mm 536 g 500 n Jul 2009 599ebay.com
8.
 
Nikon D5000 127 mm 104 mm 80 mm 590 g 510 n Apr 2009 749ebay.com
9.
 
Nikon D60 126 mm 94 mm 64 mm 522 g 500 n Jan 2008 629ebay.com
10.
 
Nikon D40X 124 mm 94 mm 64 mm 522 g 520 n Mar 2007 729ebay.com
11.
 
Nikon D40 124 mm 94 mm 64 mm 522 g 470 n Nov 2006 499ebay.com
12.
 
Olympus E-5 142 mm 117 mm 75 mm 873 g 750 Y Sep 2010 1,699ebay.com
13.
 
Olympus E-3 142 mm 116 mm 75 mm 876 g 750 Y Oct 2007 1,699ebay.com
14.
 
Olympus E-330 140 mm 87 mm 72 mm 637 g 750 n Jan 2006 999ebay.com
15.
 
Olympus E-300 147 mm 85 mm 64 mm 624 g 750 n Sep 2004 799ebay.com
16.
 
Sony NEX-5N 111 mm 59 mm 38 mm 269 g 460 n Aug 2011 699ebay.com
17.
 
Sony NEX-C3 110 mm 60 mm 33 mm 225 g 400 n Jun 2011 599ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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Any camera decision will naturally be influenced heavily by the price. 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 65 percent) than the E-1, 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 size of the imaging sensor is a crucial determinant 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. 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 D3100 features an APS-C sensor and the Olympus E-1 a Four Thirds sensor. The sensor area in the E-1 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-1 offers a 4:3 aspect.

Nikon D3100 and Olympus E-1 sensor measures

With 14.2MP, the D3100 offers a higher resolution than the E-1 (4.9MP), but the D3100 has smaller individual pixels (pixel pitch of 5.01μm versus 6.78μm for the E-1). However, the D3100 is a much more recent model (by 7 years and 1 month) than the E-1, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels.

The resolution advantage of the Nikon D3100 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D3100 for good quality output (200 dots per inch) amounts to 23 x 15.4 inches or 58.5 x 39 cm, for very good quality (250 dpi) 18.4 x 12.3 inches or 46.8 x 31.2 cm, and for excellent quality (300 dpi) 15.4 x 10.2 inches or 39 x 26 cm. The corresponding values for the Olympus E-1 are 12.8 x 9.6 inches or 32.5 x 24.4 cm for good quality, 10.2 x 7.7 inches or 26 x 19.5 cm for very good quality, and 8.5 x 6.4 inches or 21.7 x 16.3 cm for excellent quality prints.

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 E-1 are ISO 100 to ISO 800, with the possibility to increase the ISO range to 100-3200.

In terms of underlying technology, the D3100 is build around a CMOS sensor, while the E-1 uses a CCD 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.

D3100 versus E-1 MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

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Sensor Characteristics
# image 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 30721080/24p22.511.391967
2.
 
Olympus E-1 Four Thirds 4.9 2560 1920none20.09.7-14544
3.
 
Leica Digilux 3 Four Thirds 7.4 3136 2352none21.010.612753
4.
 
Nikon D3200 APS-C 24.1 6016 40001080/30p24.113.2113181
5.
 
Nikon D5100 APS-C 16.1 4928 32641080/30p23.513.6118380
6.
 
Nikon D7000 APS-C 16.1 4928 32641080/24p23.513.9116780
7.
 
Nikon D3000 APS-C 10.0 3872 2592none22.311.156362
8.
 
Nikon D5000 APS-C 12.2 4288 2848720/24p22.712.586872
9.
 
Nikon D60 APS-C 10.0 3872 2592none22.511.456265
10.
 
Nikon D40X APS-C 10.0 3872 2592none22.411.451663
11.
 
Nikon D40 APS-C 6.0 3008 2000none21.011.056156
12.
 
Olympus E-5 Four Thirds 12.2 4032 3024720/30p21.610.551956
13.
 
Olympus E-3 Four Thirds 10.0 3648 2736none21.610.557156
14.
 
Olympus E-330 Four Thirds 7.4 3136 2352none20.810.47352
15.
 
Olympus E-300 Four Thirds 8.0 3264 2448none20.410.1-4048
16.
 
Sony NEX-5N APS-C 16.0 4912 32641080/60i23.612.7107977
17.
 
Sony NEX-C3 APS-C 16.0 4912 3264720/30p22.712.2108373
Note: DXO values in italics represent estimates based on sensor size and age.
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Many modern cameras are not only capable of taking still images, but can also record movies. The D3100 indeed provides movie recording capabilities, while the E-1 does not. The highest resolution format that the D3100 can use is 1080/24p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. The D3100 and the E-1 are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinder in the E-1 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. On the other hand, the viewfinder of the D3100 has a higher magnification (0.53x vs 0.48x), 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 D3100 and Olympus E-1 along with similar information for a selection of comparators.

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Core Features
# image 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 D3100optical n3.0 / 230 fixed n 1/4000s 3.0/s Y n
2.
 
Olympus E-1optical Y1.8 / 134 fixed n 1/4000s 3.0/s n n
3.
 
Leica Digilux 3optical n2.5 / 207 fixed n 1/4000s 3.0/s Y n
4.
 
Nikon D3200optical n3.0 / 921 fixed n 1/4000s 4.0/s Y n
5.
 
Nikon D5100optical n3.0 / 921 swivel n 1/4000s 4.0/s Y n
6.
 
Nikon D7000optical Y3.0 / 921 fixed n 1/8000s 6.0/s Y n
7.
 
Nikon D3000optical n3.0 / 230 fixed n 1/4000s 3.0/s Y n
8.
 
Nikon D5000optical n2.7 / 230 full-flex n 1/4000s 4.0/s Y n
9.
 
Nikon D60optical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
10.
 
Nikon D40Xoptical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
11.
 
Nikon D40optical n2.5 / 230 fixed n 1/4000s 2.5/s Y n
12.
 
Olympus E-5optical Y3.0 / 920 swivel n 1/8000s 5.0/s Y Y
13.
 
Olympus E-3optical Y2.5 / 230 swivel n 1/8000s 5.0/s Y Y
14.
 
Olympus E-330optical n2.5 / 215 tilting n 1/4000s 3.0/s Y n
15.
 
Olympus E-300optical n1.8 / 134 fixed n 1/4000s 2.5/s Y n
16.
 
Sony NEX-5Noptional n3.0 / 920 tilting Y 1/4000s 10.0/s n n
17.
 
Sony NEX-C3optional n3.0 / 920 tilting n 1/4000s 5.5/s n n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One difference between the cameras concerns the presence of an on-board flash. The D3100 has one, while the E-1 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 D3100 writes its imaging data to SDXC cards, while the E-1 uses Compact Flash or xD Picture cards. The E-1 features dual card slots, which can be very useful in case a memory card fails. In contrast, the D3100 only has one slot.

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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 D3100 and Olympus E-1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Nikon D3100Ymono / mono--mini2.0---
2.
 
Olympus E-1Y- / ----2.0---
3.
 
Leica Digilux 3Ystereo / mono---2.0---
4.
 
Nikon D3200Ymono / monoY-mini2.0---
5.
 
Nikon D5100Ymono / monoY-mini2.0---
6.
 
Nikon D7000Ymono / monoY-mini2.0---
7.
 
Nikon D3000Y- / ----2.0---
8.
 
Nikon D5000Ymono / mono--mini2.0---
9.
 
Nikon D60Y- / ----2.0---
10.
 
Nikon D40XY- / ----2.0---
11.
 
Nikon D40Y- / ----2.0---
12.
 
Olympus E-5Ystereo / ---mini2.0---
13.
 
Olympus E-3Y- / ----2.0---
14.
 
Olympus E-330Y- / ----2.0---
15.
 
Olympus E-300Y- / ----2.0---
16.
 
Sony NEX-5NYstereo / mono--mini2.0---
17.
 
Sony NEX-C3Ystereo / mono--mini2.0---
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Studio photographers will appreciate that the Olympus E-1 (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-1 have been discontinued, but can regularly be found used on ebay. The E-1 was replaced by the Olympus E-3, while the D3100 was followed by the Nikon D3200. Further information on the features and operation of the D3100 and E-1 can be found, respectively, in the Nikon D3100 Manual (free pdf) or the online Olympus E-1 Manual.

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Review summary

So what conclusions can be drawn? Is the Nikon D3100 better than the Olympus E-1 or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Advantages of the Nikon D3100:

  • More detail: Offers more megapixels (14.2 vs 4.9MP) with a 73% higher linear resolution.
  • Better image quality: Features a larger and more technologically advanced imaging sensor.
  • Richer colors: The sensor size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
  • Broader imaging potential: Can record not only still images but also 1080/24p movies.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.53x vs 0.48x).
  • 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 (230k vs 134k dots).
  • More compact: Is smaller (124x96mm vs 141x104mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 233g or 32 percent) and hence easier to carry around.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (65 percent cheaper at launch).
  • More modern: Reflects 7 years and 1 month of technical progress since the E-1 launch.

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Arguments in favor of the Olympus E-1:

  • More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Longer lasting: Gets more shots (750 versus 550) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • 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.
  • More heavily discounted: Has been around for much longer (launched in June 2003).

If the count of individual advantages (bullet points above) is taken as a guide, the D3100 is the clear winner of the match-up (14 : 7 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

D3100 14:07 E-1

How about other alternatives? Do the specifications of the Nikon D3100 and the Olympus E-1 place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing 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 incomplete and does no justice, for example, to the way the D3100 or the E-1 perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is why expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major 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.

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Expert Camera Reviews
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D31005/5+ +..72/1004.5/54.5/5 Aug 2010 599ebay.com
2.
 
Olympus E-1......+o.. Jun 2003 1,699ebay.com
3.
 
Leica Digilux 3............ Sep 2006 1,499ebay.com
4.
 
Nikon D32005/5+ +..73/1004.5/54.5/5 Apr 2012 599ebay.com
5.
 
Nikon D51005/5+ +..76/1004.5/54.5/5 Apr 2011 749ebay.com
6.
 
Nikon D70004/5....80/1004.5/54.5/5 Sep 2010 1,499ebay.com
7.
 
Nikon D3000..+..72/1004/54.5/5 Jul 2009 599ebay.com
8.
 
Nikon D5000..+ +..75/1004/54.5/5 Apr 2009 749ebay.com
9.
 
Nikon D60..80/100..+ +4/54.5/5 Jan 2008 629ebay.com
10.
 
Nikon D40X..79/100..+ +4/54/5 Mar 2007 729ebay.com
11.
 
Nikon D40..81/100..+ +o4.5/5 Nov 2006 499ebay.com
12.
 
Olympus E-54/5....75/1004/54.5/5 Sep 2010 1,699ebay.com
13.
 
Olympus E-3..88/100..+ +o4/5 Oct 2007 1,699ebay.com
14.
 
Olympus E-330......+o.. Jan 2006 999ebay.com
15.
 
Olympus E-300......+o4.5/5 Sep 2004 799ebay.com
16.
 
Sony NEX-5N3/5+ +..79/1004.5/54.5/5 Aug 2011 699ebay.com
17.
 
Sony NEX-C33/5+ +..74/1004.5/54/5 Jun 2011 599ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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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.

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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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Nikon D3100 vs Olympus E-1

    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 D3100 Olympus E-1
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Nikon F mount lenses Four Thirds lenses
    Launch Date August 2010 June 2003
    Launch Price USD 599 USD 1,699
    Sensor Specs Nikon D3100 Olympus E-1
    Sensor Technology CMOS CCD
    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 4.9 Megapixels
    Image Resolution 4608 x 3072 pixels 2560 x 1920 pixels
    Pixel Pitch 5.01 μm 6.78 μm
    Pixel Density 3.98 MP/cm2 2.19 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 1080/24p Video no Video
    ISO Setting 100 - 3,200 ISO 100 - 800 ISO
    ISO Boost 100 - 12,800 ISO 100 - 3,200 ISO
    Image Processor EXPEED 2 TruePic
    DXO Sensor Quality (score) 67 ..
    DXO Color Depth (bits) 22.5 ..
    DXO Dynamic Range (EV) 11.3 ..
    DXO Low Light (ISO) 919 ..
    Screen Specs Nikon D3100 Olympus E-1
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.53x 0.48x
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View
    Rear LCD Size 3.0inch 1.8inch
    LCD Resolution 230k dots 134k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Nikon D3100 Olympus E-1
    Focus System Phase-detect AF Phase-detect AF
    Continuous Shooting 3 shutter flaps/s 3 shutter flaps/s
    Shutter Life Expectancy100 000 actuations150 000 actuations
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDXC cards CF or XD cards
    Single or Dual Card Slots Single card slot Dual card slots
    Connectivity Specs Nikon D3100 Olympus E-1
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI no HDMI
    Wifi Support no Wifi no Wifi
    Body Specs Nikon D3100 Olympus E-1
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Nikon EN-EL14 Olympus BLM-1
    Battery Life (CIPA)550 shots per charge750 shots per charge
    Body Dimensions 124 x 96 x 75 mm
    (4.9 x 3.8 x 3.0 in)
    141 x 104 x 81 mm
    (5.6 x 4.1 x 3.2 in)
    Camera Weight 505 g (17.8 oz) 738 g (26.0 oz)
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