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Nikon D3100 vs Olympus E-PL1

The Nikon D3100 and the Olympus PEN E-PL1 are two digital cameras that were announced, respectively, in August 2010 and February 2010. The D3100 is a DSLR, while the E-PL1 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D3100) and a Four Thirds (E-PL1) sensor. The Nikon has a resolution of 14.2 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 D3100
versus
Olympus E-PL1
Nikon D3100   Olympus E-PL1
Digital single lens reflex Mirrorless system camera
Nikon F mount lenses Micro Four Thirds lenses
14.2 MP – APS-C sensor 12.2 MP – Four Thirds sensor
1080/24p Video 720/30p Video
ISO 100-3,200 (100 - 12,800) ISO 200-3,200
Optical viewfinder Viewfinder optional
3.0" LCD – 230k dots 2.7" LCD – 230k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
3 shutter flaps per second 3 shutter flaps per second
Lens stabilization onlyIn-body stabilization
550 shots per battery charge290 shots per battery charge
124 x 96 x 75 mm, 505 g 115 x 72 x 42 mm, 334 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 PEN E-PL1? 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 D3100 and the Olympus E-PL1 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 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-PL1 is available in four color-versions (black, blue, yellow, white).

Size Nikon D3100 vs Olympus E-PL1
Compare D3100 versus E-PL1 top
Comparison D3100 or E-PL1 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-PL1 is considerably smaller (30 percent) than the Nikon D3100. Moreover, the E-PL1 is markedly lighter (34 percent) than the D3100. In this context, it is worth noting that neither the D3100 nor the E-PL1 are weather-sealed.

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-PL1). Mirrorless cameras, such as the E-PL1, 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 EN-EL14 battery, while the E-PL1 can take 290 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. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

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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 D3100 124 mm 96 mm 75 mm 505 g 550 n Aug 2010 599ebay.com
2.
 
Olympus E-PL1 115 mm 72 mm 42 mm 334 g 290 n Feb 2010 599ebay.com
3.
 
Nikon D3200 125 mm 96 mm 77 mm 505 g 540 n Apr 2012 599ebay.com
4.
 
Nikon D5100 128 mm 97 mm 79 mm 560 g 660 n Apr 2011 749ebay.com
5.
 
Nikon D7000 132 mm 105 mm 77 mm 780 g 1050 Y Sep 2010 1,499ebay.com
6.
 
Nikon D3000 126 mm 97 mm 64 mm 536 g 500 n Jul 2009 599ebay.com
7.
 
Nikon D5000 127 mm 104 mm 80 mm 590 g 510 n Apr 2009 749ebay.com
8.
 
Nikon D60 126 mm 94 mm 64 mm 522 g 500 n Jan 2008 629ebay.com
9.
 
Nikon D40X 124 mm 94 mm 64 mm 522 g 520 n Mar 2007 729ebay.com
10.
 
Nikon D40 124 mm 94 mm 64 mm 522 g 470 n Nov 2006 499ebay.com
11.
 
Olympus E-P3 122 mm 69 mm 34 mm 369 g 330 n Jun 2011 799ebay.com
12.
 
Olympus E-PL2 114 mm 72 mm 42 mm 362 g 280 n Jan 2011 599ebay.com
13.
 
Olympus E-PL3 110 mm 64 mm 37 mm 313 g 300 n Jun 2011 599ebay.com
14.
 
Olympus E-P1 121 mm 70 mm 36 mm 355 g 300 n Jun 2009 799ebay.com
15.
 
Olympus E-P2 121 mm 70 mm 36 mm 355 g 300 n Nov 2009 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.

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 two cameras under review were launched at the same price and fall into the same 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.

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. 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 are more costly to manufacture and tend to 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-PL1 a Four Thirds sensor. The sensor area in the E-PL1 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-PL1 offers a 4:3 aspect.

Nikon D3100 and Olympus E-PL1 sensor measures

With 14.2MP, the D3100 offers a higher resolution than the E-PL1 (12.2MP), but the D3100 nevertheless has larger individual pixels (pixel pitch of 5.01μm versus 4.29μm for the E-PL1) due to its larger sensor. Moreover, the D3100 is a somewhat more recent model (by 6 months) than the E-PL1, and its sensor might have benefitted from technological advances during this time that further 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-PL1 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 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 PEN E-PL1 are ISO 200 to ISO 3200 (no boost).

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.

D3100 versus E-PL1 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"). Of the two cameras under review, the D3100 provides substantially higher image quality than the E-PL1, with an overall score that is 13 points higher. This advantage is based on 1 bits higher color depth, 1.2 EV in additional dynamic range, and 0.9 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 D3100 APS-C 14.2 4608 30721080/24p22.511.391967
2.
 
Olympus E-PL1 Four Thirds 12.2 4032 3024720/30p21.510.148754
3.
 
Nikon D3200 APS-C 24.1 6016 40001080/30p24.113.2113181
4.
 
Nikon D5100 APS-C 16.1 4928 32641080/30p23.513.6118380
5.
 
Nikon D7000 APS-C 16.1 4928 32641080/24p23.513.9116780
6.
 
Nikon D3000 APS-C 10.0 3872 2592none22.311.156362
7.
 
Nikon D5000 APS-C 12.2 4288 2848720/24p22.712.586872
8.
 
Nikon D60 APS-C 10.0 3872 2592none22.511.456265
9.
 
Nikon D40X APS-C 10.0 3872 2592none22.411.451663
10.
 
Nikon D40 APS-C 6.0 3008 2000none21.011.056156
11.
 
Olympus E-P3 Four Thirds 12.2 4032 30241080/60i20.810.153651
12.
 
Olympus E-PL2 Four Thirds 12.2 4032 3024720/30p21.410.257355
13.
 
Olympus E-PL3 Four Thirds 12.2 4032 30241080/60i20.910.349952
14.
 
Olympus E-P1 Four Thirds 12.2 4032 3024720/30p21.410.453655
15.
 
Olympus E-P2 Four Thirds 12.2 4032 3024720/30p21.510.450556
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

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 D3100 provides a higher video resolution than the E-PL1. It can shoot video footage at 1080/24p, while the Olympus is limited to 720/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the D3100 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the E-PL1 relies on live view and the rear LCD for framing. That said, the E-PL1 can be equipped with an optional viewfinder – the VF-2. The adjacent table lists some of the other core features of the Nikon D3100 and Olympus E-PL1 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 D3100optical n3.0 / 230 fixed n 1/4000s 3.0/s Y n
2.
 
Olympus E-PL1optional n2.7 / 230 fixed n 1/2000s 3.0/s Y Y
3.
 
Nikon D3200optical n3.0 / 921 fixed n 1/4000s 4.0/s Y n
4.
 
Nikon D5100optical n3.0 / 921 swivel n 1/4000s 4.0/s Y n
5.
 
Nikon D7000optical Y3.0 / 921 fixed n 1/8000s 6.0/s Y n
6.
 
Nikon D3000optical n3.0 / 230 fixed n 1/4000s 3.0/s Y n
7.
 
Nikon D5000optical n2.7 / 230 full-flex n 1/4000s 4.0/s Y n
8.
 
Nikon D60optical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
9.
 
Nikon D40Xoptical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
10.
 
Nikon D40optical n2.5 / 230 fixed n 1/4000s 2.5/s Y n
11.
 
Olympus E-P3optional n3.0 / 614 fixed Y 1/4000s 3.0/s Y Y
12.
 
Olympus E-PL2optional n3.0 / 460 fixed n 1/4000s 3.0/s Y Y
13.
 
Olympus E-PL3optional n3.0 / 460 tilting n 1/4000s 5.5/s n Y
14.
 
Olympus E-P1none n3.0 / 230 fixed n 1/4000s 3.0/s n Y
15.
 
Olympus E-P2optional n3.0 / 230 fixed n 1/4000s 3.0/s n Y
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
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that differentiates the E-PL1 and the D3100 is in-body image stabilization (IBIS). The E-PL1 reduces the risk of handshake-induced blur with all attached lenses, while the D3100 offers no blur reduction with lenses that themselves do not provide optical image stabilization.

The D3100 writes its imaging data to SDXC cards, while the E-PL1 uses SDHC 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 PEN E-PL1 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 D3100Ymono / mono--mini2.0---
2.
 
Olympus E-PL1Ystereo / ---mini2.0---
3.
 
Nikon D3200Ymono / monoY-mini2.0---
4.
 
Nikon D5100Ymono / monoY-mini2.0---
5.
 
Nikon D7000Ymono / monoY-mini2.0---
6.
 
Nikon D3000Y- / ----2.0---
7.
 
Nikon D5000Ymono / mono--mini2.0---
8.
 
Nikon D60Y- / ----2.0---
9.
 
Nikon D40XY- / ----2.0---
10.
 
Nikon D40Y- / ----2.0---
11.
 
Olympus E-P3Ystereo / ---mini2.0---
12.
 
Olympus E-PL2Ystereo / ---mini2.0---
13.
 
Olympus E-PL3Ystereo / ---mini2.0---
14.
 
Olympus E-P1Ystereo / ---mini2.0---
15.
 
Olympus E-P2Ystereo / ---mini2.0---
16.
 
Sony NEX-5NYstereo / mono--mini2.0---
17.
 
Sony NEX-C3Ystereo / mono--mini2.0---

Both the D3100 and the E-PL1 have been discontinued, but can regularly be found used on ebay. The E-PL1 was replaced by the Olympus E-PL2, while the D3100 was followed by the Nikon D3200. Further information on the features and operation of the D3100 and E-PL1 can be found, respectively, in the Nikon D3100 Manual (free pdf) or the online Olympus E-PL1 Manual.

Review summary

So what is the bottom line? Which of the two cameras – the Nikon D3100 or the Olympus E-PL1 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

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Arguments in favor of the Nikon D3100:

  • More detail: Offers more megapixels (14.2 vs 12.2MP) with a 10% higher linear resolution.
  • Better image quality: Scores substantially higher (13 points) in the DXO overall assessment.
  • More dynamic range: Captures a larger spectrum of light and dark details (1.2 EV of extra DR).
  • Better low-light sensitivity: Requires less light for good images (0.9 stops ISO advantage).
  • Better video: Provides higher definition movie capture (1080/24p vs 720/30p).
  • Easier framing: Has an optical viewfinder for image composition and settings control.
  • Larger screen: Has a bigger rear LCD (3.0" vs 2.7") for image review and settings control.
  • Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
  • Longer lasting: Can take more shots (550 versus 290) on a single battery charge.
  • More modern: Is somewhat more recent (announced 6 months after the E-PL1).

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Advantages of the Olympus PEN E-PL1:

  • More compact: Is smaller (115x72mm vs 124x96mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 171g or 34 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 heavily discounted: Has been on the market for longer (launched in February 2010).

If the number of relative strengths (bullet points above) is taken as a guide, the D3100 is the clear winner of the match-up (10 : 5 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 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.

D3100 10:05 E-PL1

How about other alternatives? Do the specifications of the Nikon D3100 and the Olympus E-PL1 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 D3100 and the E-PL1 in practical situations. 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 where reviews by experts come in. 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
     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-PL1..86/100..69/1004/54.5/5 Feb 2010 599ebay.com
3.
 
Nikon D32005/5+ +..73/1004.5/54.5/5 Apr 2012 599ebay.com
4.
 
Nikon D51005/5+ +..76/1004.5/54.5/5 Apr 2011 749ebay.com
5.
 
Nikon D70004/5....80/1004.5/54.5/5 Sep 2010 1,499ebay.com
6.
 
Nikon D3000..+..72/1004/54.5/5 Jul 2009 599ebay.com
7.
 
Nikon D5000..+ +..75/1004/54.5/5 Apr 2009 749ebay.com
8.
 
Nikon D60..80/100..+ +4/54.5/5 Jan 2008 629ebay.com
9.
 
Nikon D40X..79/100..+ +4/54/5 Mar 2007 729ebay.com
10.
 
Nikon D40..81/100..+ +o4.5/5 Nov 2006 499ebay.com
11.
 
Olympus E-P3..83/100..74/1004.5/54.5/5 Jun 2011 799ebay.com
12.
 
Olympus E-PL23/583/100..71/1004.5/54.5/5 Jan 2011 599ebay.com
13.
 
Olympus E-PL33/5+ +..72/1004.5/54/5 Jun 2011 599ebay.com
14.
 
Olympus E-P1..+..66/1004/54.5/5 Jun 2009 799ebay.com
15.
 
Olympus E-P23/5+..69/1004/54.5/5 Nov 2009 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
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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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. 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 D3100 vs Olympus E-PL1

    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-PL1
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Nikon F mount lenses Micro Four Thirds lenses
    Launch Date August 2010 February 2010
    Launch Price USD 599 USD 599
    Sensor Specs Nikon D3100 Olympus E-PL1
    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 12.2 Megapixels
    Image Resolution 4608 x 3072 pixels 4032 x 3024 pixels
    Pixel Pitch 5.01 μm 4.29 μm
    Pixel Density 3.98 MP/cm2 5.42 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 1080/24p Video 720/30p Video
    ISO Setting 100 - 3,200 ISO 200 - 3,200 ISO
    ISO Boost 100 - 12,800 ISO no Enhancement
    Image Processor EXPEED 2 Truepic V
    DXO Sensor Quality (score) 67 54
    DXO Color Depth (bits) 22.5 21.5
    DXO Dynamic Range (EV) 11.3 10.1
    DXO Low Light (ISO) 919 487
    Screen Specs Nikon D3100 Olympus E-PL1
    Viewfinder Type Optical viewfinder Viewfinder optional
    Viewfinder Field of View 95%
    Viewfinder Magnification 0.53x
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 2.7inch
    LCD Resolution 230k dots 230k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Nikon D3100 Olympus E-PL1
    Focus System Phase-detect AF Contrast-detect AF
    Continuous Shooting 3 shutter flaps/s 3 shutter flaps/s
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium SDXC cards SDHC cards
    Single or Dual Card Slots Single card slot Single card slot
    UHS card support no no
    Connectivity Specs Nikon D3100 Olympus E-PL1
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI mini HDMI
    Wifi Support no Wifi no Wifi
    Body Specs Nikon D3100 Olympus E-PL1
    Battery Type EN-EL14 BLS-1
    Battery Life (CIPA)550 shots per charge290 shots per charge
    Body Dimensions 124 x 96 x 75 mm
    (4.9 x 3.8 x 3.0 in)
    115 x 72 x 42 mm
    (4.5 x 2.8 x 1.7 in)
    Camera Weight 505 g (17.8 oz) 334 g (11.8 oz)
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    Check D3100 offers at
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    Check E-PL1 offers at
    ebay.com

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