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Olympus E-P3 vs Nikon D300

The Olympus PEN E-P3 and the Nikon D300 are two enthusiast cameras that were announced, respectively, in June 2011 and August 2007. The E-P3 is a mirrorless interchangeable lens camera, while the D300 is a DSLR. The cameras are based on a Four Thirds (E-P3) and an APS-C (D300) sensor. Both cameras offer a resolution of 12.2 megapixels.

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

Headline Specifications
Olympus E-P3
versus
Nikon D300
Olympus E-P3   Nikon D300
Mirrorless system camera Digital single lens reflex
Micro Four Thirds lenses Nikon F mount lenses
12.2 MP – Four Thirds sensor 12.2 MP – APS-C sensor
1080/60i Video no Video
ISO 200-12,800 ISO 200-3,200 (100 - 6,400)
Viewfinder optional Optical viewfinder
3.0" LCD – 614k dots 3.0" LCD – 922k dots
Fixed touchscreen Fixed screen (not touch-sensitive)
3 shutter flaps per second 6 shutter flaps per second
In-body stabilizationLens stabilization only
not weather sealedWeathersealed body
330 shots per battery charge1000 shots per battery charge
122 x 69 x 34 mm, 369 g 147 x 114 x 74 mm, 925 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus PEN E-P3 and the Nikon D300? 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 Olympus E-P3 and the Nikon D300. 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-P3 can be obtained in three different colors (black, silver, white), while the D300 is only available in black.

Size Olympus E-P3 vs Nikon D300
Compare E-P3 versus D300 top
Comparison E-P3 or D300 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon D300 is considerably larger (99 percent) than the Olympus E-P3. Moreover, the D300 is substantially heavier (151 percent) than the E-P3. It is noteworthy in this context that the D300 is splash and dust-proof, while the E-P3 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 Micro Four Thirds Lens Catalog (E-P3) and the Nikon Lens Catalog (D300). Mirrorless cameras, such as the Olympus E-P3, have moreover the advantage that they have a relatively short flange to focal plane distance and can thus use many lenses from other systems via adapters.

Concerning battery life, the E-P3 gets 330 shots out of its Olympus BLS-5 battery, while the D300 can take 1000 images on a single charge of its Nikon EN-EL3e 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
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-P3 122 mm 69 mm 34 mm 369 g 330 n Jun 2011 799ebay.com
2.
 
Nikon D300 147 mm 114 mm 74 mm 925 g 1000 Y Aug 2007 1,799ebay.com
3.
 
Nikon D7000 132 mm 105 mm 77 mm 780 g 1050 Y Sep 2010 1,499ebay.com
4.
 
Nikon D300S 147 mm 115 mm 81 mm 938 g 950 Y Jul 2009 1,799ebay.com
5.
 
Nikon D700 147 mm 123 mm 77 mm 1074 g 1000 Y Jul 2008 2,999ebay.com
6.
 
Nikon D2Xs 158 mm 150 mm 86 mm 1252 g 3800 Y Jun 2006 4,699ebay.com
7.
 
Nikon D200 147 mm 113 mm 74 mm 920 g 400 Y Nov 2005 1,699ebay.com
8.
 
Olympus E-M10 II 120 mm 83 mm 47 mm 390 g 320 n Aug 2015 649ebay.com
9.
 
Olympus E-M10 119 mm 82 mm 46 mm 396 g 320 n Jan 2014 699ebay.com
10.
 
Olympus E-P5 122 mm 69 mm 37 mm 420 g 330 n May 2013 999ebay.com
11.
 
Olympus XZ-2 113 mm 65 mm 48 mm 346 g 340 n Sep 2012 599ebay.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-PM1 110 mm 64 mm 34 mm 265 g 330 n Jun 2011 499ebay.com
15.
 
Olympus E-PL1 115 mm 72 mm 42 mm 334 g 290 n Feb 2010 599ebay.com
16.
 
Olympus E-P1 121 mm 70 mm 36 mm 355 g 300 n Jun 2009 799ebay.com
17.
 
Olympus E-P2 121 mm 70 mm 36 mm 355 g 300 n Nov 2009 799ebay.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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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-P3 was launched at a markedly lower price (by 56 percent) than the D300, 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 sensor inside a digital camera is one of the key determinants of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Olympus E-P3 features a Four Thirds sensor and the Nikon D300 an APS-C sensor. The sensor area in the D300 is 66 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.5. The sensor in the E-P3 has a native 4:3 aspect ratio, while the one in the D300 offers a 3:2 aspect.

Olympus E-P3 and Nikon D300 sensor measures

Even though the D300 has a larger sensor, both cameras offer the same resolution of 12.2 megapixels. This implies that the D300 has a lower pixel density and larger individual pixels (with a pixel pitch of 5.53μm versus 4.29μm for the E-P3), which gives it a potential advantage in terms of light gathering capacity. It should, however, be noted that the E-P3 is much more recent (by 3 years and 10 months) than the D300, and its sensor will have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size.

The Olympus PEN E-P3 has a native sensitivity range from ISO 200 to ISO 12800. The corresponding ISO settings for the Nikon D300 are ISO 200 to ISO 3200, with the possibility to increase the ISO range to 100-6400.

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.

E-P3 versus D300 MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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"). Of the two cameras under consideration, the D300 offers substantially better image quality than the E-P3 (overall score 16 points higher). The advantage is based on 1.3 bits higher color depth, 1.9 EV in additional dynamic range, and 0.3 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
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Olympus E-P3 Four Thirds 12.2 4032 30241080/60i20.810.153651
2.
 
Nikon D300 APS-C 12.2 4288 2848none22.112.067967
3.
 
Nikon D7000 APS-C 16.1 4928 32641080/24p23.513.9116780
4.
 
Nikon D300S APS-C 12.2 4288 2848720/24p22.512.278770
5.
 
Nikon D700 Full Frame 12.1 4256 2832none23.512.2230380
6.
 
Nikon D2Xs APS-C 12.2 4288 2848none22.210.948959
7.
 
Nikon D200 APS-C 10.0 3872 2592none22.311.558364
8.
 
Olympus E-M10 II Four Thirds 15.9 4608 34561080/60p23.112.584273
9.
 
Olympus E-M10 Four Thirds 15.9 4608 34561080/30p22.812.388472
10.
 
Olympus E-P5 Four Thirds 15.9 4608 34561080/30p22.812.489572
11.
 
Olympus XZ-2 1/1.7 11.8 3968 29761080/30p20.411.321649
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-PM1 Four Thirds 12.2 4032 30241080/60i21.010.349952
15.
 
Olympus E-PL1 Four Thirds 12.2 4032 3024720/30p21.510.148754
16.
 
Olympus E-P1 Four Thirds 12.2 4032 3024720/30p21.410.453655
17.
 
Olympus E-P2 Four Thirds 12.2 4032 3024720/30p21.510.450556
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Many modern cameras are not only capable of taking still images, but also of capturing video footage. The E-P3 indeed provides movie recording capabilities, while the D300 does not. The highest resolution format that the E-P3 can use is 1080/60i.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the D300 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the E-P3 relies on live view and the rear LCD for framing. That said, the E-P3 can be equipped with an optional viewfinder – the VF-3. The adjacent table lists some of the other core features of the Olympus E-P3 and Nikon D300 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.
 
Olympus E-P3optional n3.0 / 614 fixed Y 1/4000s 3.0/s Y Y
2.
 
Nikon D300optical Y3.0 / 922 fixed n 1/8000s 6.0/s Y n
3.
 
Nikon D7000optical Y3.0 / 921 fixed n 1/8000s 6.0/s Y n
4.
 
Nikon D300Soptical Y3.0 / 920 fixed n 1/8000s 7.0/s Y n
5.
 
Nikon D700optical Y3.0 / 922 fixed n 1/8000s 8.0/s Y n
6.
 
Nikon D2Xsoptical Y2.5 / 230 fixed n 1/8000s 5.0/s n n
7.
 
Nikon D200optical Y2.5 / 230 fixed n 1/8000s 5.0/s Y n
8.
 
Olympus E-M10 II2360 n3.0 / 1040 tilting Y 1/4000s 8.0/s Y Y
9.
 
Olympus E-M101440 n3.0 / 1037 tilting Y 1/4000s 8.0/s Y Y
10.
 
Olympus E-P5optional n3.0 / 1037 tilting Y 1/8000s 9.0/s Y Y
11.
 
Olympus XZ-2optional n3.0 / 920 tilting Y 1/2000s 5.0/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-PM1optional n3.0 / 460 fixed n 1/4000s 5.5/s n Y
15.
 
Olympus E-PL1optional n2.7 / 230 fixed n 1/2000s 3.0/s Y Y
16.
 
Olympus E-P1none n3.0 / 230 fixed n 1/4000s 3.0/s n Y
17.
 
Olympus E-P2optional n3.0 / 230 fixed n 1/4000s 3.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One feature that differentiates the E-P3 and the D300 is in-body image stabilization (IBIS). The E-P3 reduces the risk of handshake-induced blur with all attached lenses, while the D300 offers no blur reduction with lenses that themselves do not provide optical image stabilization.

The Nikon D300 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 E-P3 writes its imaging data to SDXC cards, while the D300 uses Compact Flash cards.

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Connectivity comparison

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Olympus PEN E-P3 and Nikon D300 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.
 
Olympus E-P3Ystereo / ---mini2.0---
2.
 
Nikon D300Y- / ---mini2.0---
3.
 
Nikon D7000Ymono / monoY-mini2.0---
4.
 
Nikon D300SYstereo / monoY-mini2.0---
5.
 
Nikon D700Y- / ---mini2.0---
6.
 
Nikon D2XsY- / ----2.0---
7.
 
Nikon D200Y- / ----2.0---
8.
 
Olympus E-M10 IIYstereo / mono--micro2.0Y--
9.
 
Olympus E-M10Ystereo / mono--micro2.0Y--
10.
 
Olympus E-P5Ystereo / mono--micro2.0Y--
11.
 
Olympus XZ-2Ystereo / mono--mini2.0---
12.
 
Olympus E-PL2Ystereo / ---mini2.0---
13.
 
Olympus E-PL3Ystereo / ---mini2.0---
14.
 
Olympus E-PM1Ystereo / mono--mini2.0---
15.
 
Olympus E-PL1Ystereo / ---mini2.0---
16.
 
Olympus E-P1Ystereo / ---mini2.0---
17.
 
Olympus E-P2Ystereo / ---mini2.0---
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Studio photographers will appreciate that the Nikon D300 (unlike the E-P3) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the E-P3 and the D300 have been discontinued, but can regularly be found used on ebay. The D300 was replaced by the Nikon D300S, while the E-P3 was followed by the Olympus E-P5. Further information on the features and operation of the E-P3 and D300 can be found, respectively, in the Olympus E-P3 Manual (free pdf) or the online Nikon D300 Manual.

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Review summary

So what is the bottom line? Which of the two cameras – the Olympus E-P3 or the Nikon D300 – 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 Olympus PEN E-P3:

  • Broader imaging potential: Can record not only still images but also 1080/60i movies.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • More compact: Is smaller (122x69mm vs 147x114mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 556g or 60 percent) and hence easier to carry around.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • More affordable: Was introduced into a lower priced category (56 percent cheaper at launch).
  • More modern: Reflects 3 years and 10 months of technical progress since the D300 launch.

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Advantages of the Nikon D300:

  • Better image quality: Scores substantially higher (16 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (1.3 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (1.9 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (0.3 stops ISO advantage).
  • Easier framing: Has an optical viewfinder for image composition and settings control.
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • More detailed LCD: Has a higher resolution rear screen (922k vs 614k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (6 vs 3 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Gets more shots (1000 versus 330) 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.
  • More heavily discounted: Has been around for much longer (launched in August 2007).

If the number of relative strengths (bullet points above) is taken as a guide, the D300 is the clear winner of the contest (14 : 8 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.

E-P3 08:14 D300

How about other alternatives? Do the specifications of the Olympus E-P3 and the Nikon D300 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR 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 E-P3 and the D300 in practical situations. 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 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
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-P3..83/100..74/1004.5/54.5/5 Jun 2011 799ebay.com
2.
 
Nikon D300..+ +..+ +5/54.5/5 Aug 2007 1,799ebay.com
3.
 
Nikon D70004/5....80/1004.5/54.5/5 Sep 2010 1,499ebay.com
4.
 
Nikon D300S5/5+ +..82/1004/54.5/5 Jul 2009 1,799ebay.com
5.
 
Nikon D700..89/100..+ +4.5/54.5/5 Jul 2008 2,999ebay.com
6.
 
Nikon D2Xs............ Jun 2006 4,699ebay.com
7.
 
Nikon D200..+ +..+ +o.. Nov 2005 1,699ebay.com
8.
 
Olympus E-M10 II4.5/5+ +..80/1005/55/5 Aug 2015 649ebay.com
9.
 
Olympus E-M104/5....80/1005/55/5 Jan 2014 699ebay.com
10.
 
Olympus E-P55/5+ +..78/1004.5/55/5 May 2013 999ebay.com
11.
 
Olympus XZ-24/5+....4.5/54.5/5 Sep 2012 599ebay.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-PM1..86/100..71/1004.5/54.5/5 Jun 2011 499ebay.com
15.
 
Olympus E-PL1..86/100..69/1004/54.5/5 Feb 2010 599ebay.com
16.
 
Olympus E-P1..+..66/1004/54.5/5 Jun 2009 799ebay.com
17.
 
Olympus E-P23/5+..69/1004/54.5/5 Nov 2009 799ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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Care should be taken when interpreting the review scores above, 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 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: Olympus E-P3 vs Nikon D300

    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 Olympus E-P3 Nikon D300
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Micro Four Thirds lenses Nikon F mount lenses
    Launch Date June 2011 August 2007
    Launch Price USD 799 USD 1,799
    Sensor Specs Olympus E-P3 Nikon D300
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor APS-C Sensor
    Sensor Size 17.3 x 13.0 mm 23.6 x 15.8 mm
    Sensor Area 224.9 mm2 372.88 mm2
    Sensor Diagonal 21.6 mm 28.4 mm
    Crop Factor 2.0x 1.5x
    Sensor Resolution 12.2 Megapixels 12.2 Megapixels
    Image Resolution 4032 x 3024 pixels 4288 x 2848 pixels
    Pixel Pitch 4.29 μm 5.53 μm
    Pixel Density 5.42 MP/cm2 3.28 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 1080/60i Video no Video
    ISO Setting 200 - 12,800 ISO 200 - 3,200 ISO
    ISO Boost no Enhancement 100 - 6,400 ISO
    Image Processor TruePic VI EXPEED
    DXO Sensor Quality (score) 51 67
    DXO Color Depth (bits) 20.8 22.1
    DXO Dynamic Range (EV) 10.1 12.0
    DXO Low Light (ISO) 536 679
    Screen Specs Olympus E-P3 Nikon D300
    Viewfinder Type Viewfinder optional Optical viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.63x
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 614k dots 922k dots
    LCD Attachment Fixed screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Olympus E-P3 Nikon D300
    Focus System Contrast-detect AF Phase-detect AF
    Continuous Shooting 3 shutter flaps/s 6 shutter flaps/s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium SDXC cards CF cards
    Single or Dual Card Slots Single card slot Single card slot
    Connectivity Specs Olympus E-P3 Nikon D300
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI mini HDMI
    Wifi Support no Wifi no Wifi
    Body Specs Olympus E-P3 Nikon D300
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Olympus BLS-5 Nikon EN-EL3e
    Battery Life (CIPA)330 shots per charge1000 shots per charge
    Body Dimensions 122 x 69 x 34 mm
    (4.8 x 2.7 x 1.3 in)
    147 x 114 x 74 mm
    (5.8 x 4.5 x 2.9 in)
    Camera Weight 369 g (13.0 oz) 925 g (32.6 oz)
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