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Nikon D3S vs Olympus E-PM1

The Nikon D3S and the Olympus PEN E-PM1 are two digital cameras that were announced, respectively, in October 2009 and June 2011. The D3S is a DSLR, while the E-PM1 is a mirrorless interchangeable lens camera. The cameras are based on a full frame (D3S) and a Four Thirds (E-PM1) sensor. The Nikon has a resolution of 12.1 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 D3S
versus
Olympus E-PM1
Nikon D3S   Olympus E-PM1
Digital single lens reflex Mirrorless system camera
Nikon F mount lenses Micro Four Thirds lenses
12.1 MP – Full Frame sensor 12.2 MP – Four Thirds sensor
720/24p Video 1080/60i Video
ISO 200-12,800 (100 - 102,400) ISO 100-12,800
Optical viewfinder Viewfinder optional
3.0" LCD – 921k dots 3.0" LCD – 460k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
11 shutter flaps per second 5.5 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodynot weather sealed
4200 shots per battery charge330 shots per battery charge
160 x 157 x 88 mm, 1240 g 110 x 64 x 34 mm, 265 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D3S and the Olympus PEN E-PM1? 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 D3S and the Olympus E-PM1. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter.

The E-PM1 can be obtained in six different colors (black, silver, brown, pink, purple, white), while the D3S is only available in black.

Size Nikon D3S vs Olympus E-PM1
Compare D3S versus E-PM1 top
Comparison D3S or E-PM1 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-PM1 is considerably smaller (72 percent) than the Nikon D3S. Moreover, the E-PM1 is substantially lighter (79 percent) than the D3S. It is worth mentioning in this context that the D3S is splash and dust resistant, while the E-PM1 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 (D3S) and the Micro Four Thirds Lens Catalog (E-PM1). Mirrorless cameras, such as the E-PM1, 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 D3S gets 4200 shots out of its Nikon EN-EL4a battery, while the E-PM1 can take 330 images on a single charge of its Olympus BLS-5 power pack. As can be seen in the images above, the D3S has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power.

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

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
Nikon D3S 160 mm 157 mm 88 mm 1240 g 4200 Y Oct 2009 US$ 5 199ebay.com
2.
 
Olympus E-PM1 110 mm 64 mm 34 mm 265 g 330 n Jun 2011 US$ 499ebay.com
3.
 
Canon 1D Mark III 156 mm 157 mm 80 mm 1155 g 2200 Y Feb 2007 US$ 4 499ebay.com
4.
 
Canon 1D Mark IV 156 mm 157 mm 80 mm 1230 g 1500 Y Oct 2009 US$ 4 999ebay.com
5.
 
Nikon D2Xs 158 mm 150 mm 86 mm 1252 g 3800 Y Jun 2006 US$ 4 699ebay.com
6.
 
Nikon D3 160 mm 157 mm 88 mm 1300 g 4300 Y Aug 2007 US$ 4 999ebay.com
7.
 
Nikon D3X 160 mm 157 mm 88 mm 1260 g 4400 Y Dec 2008 US$ 7 999ebay.com
8.
 
Nikon D4 160 mm 157 mm 91 mm 1340 g 2600 Y Jan 2012 US$ 5 999ebay.com
9.
 
Nikon D4S 160 mm 157 mm 91 mm 1350 g 3020 Y Feb 2014 US$ 6 499ebay.com
10.
 
Nikon D5 160 mm 159 mm 92 mm 1415 g 3780 Y Jan 2016 US$ 6 499ebay.com
11.
 
Nikon D300S 147 mm 115 mm 81 mm 938 g 950 Y Jul 2009 US$ 1 799ebay.com
12.
 
Nikon D700 147 mm 123 mm 77 mm 1074 g 1000 Y Jul 2008 US$ 2 999ebay.com
13.
 
Olympus E-PL1 115 mm 72 mm 42 mm 334 g 290 n Feb 2010 US$ 599ebay.com
14.
 
Olympus E-PL2 114 mm 72 mm 42 mm 362 g 280 n Jan 2011 US$ 599ebay.com
15.
 
Olympus E-PL3 110 mm 64 mm 37 mm 313 g 300 n Jun 2011 US$ 599ebay.com
16.
 
Olympus E-PM2 110 mm 64 mm 34 mm 269 g 360 n Sep 2012 US$ 499ebay.com
17.
 
Panasonic G2 124 mm 84 mm 74 mm 428 g 360 n Mar 2010 US$ 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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The E-PM1 was launched at a markedly lower price (by 90 percent) than the D3S, 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.

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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better 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 D3S features a full frame sensor and the Olympus E-PM1 a Four Thirds sensor. The sensor area in the E-PM1 is 74 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 2.0. The sensor in the D3S has a native 3:2 aspect ratio, while the one in the E-PM1 offers a 4:3 aspect.

Nikon D3S and Olympus E-PM1 sensor measures

Despite having a smaller sensor, the E-PM1 offers a slightly higher resolution of 12.2 megapixels, compared with 12.1 MP of the D3S. 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 4.29μm versus 8.43μm for the D3S). However, it should be noted that the E-PM1 is a somewhat more recent model (by 1 year and 8 months) than the D3S, and its sensor might have benefitted from technological advances during this time that partly offset its pixel-size disadvantage.

The Nikon D3S has a native sensitivity range from ISO 200 to ISO 12800, which can be extended to ISO 100-102400. The corresponding ISO settings for the Olympus PEN E-PM1 are ISO 100 to ISO 12800 (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.

D3S versus E-PM1 MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. Of the two cameras under review, the D3S provides substantially higher image quality than the E-PM1, with an overall score that is 30 points higher. This advantage is based on 2.5 bits higher color depth, 1.7 EV in additional dynamic range, and 2.7 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
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Nikon D3S Full Frame 12.1 4256 2832720/24p23.512.0325382
2.
 
Olympus E-PM1 Four Thirds 12.2 4032 30241080/60i21.010.349952
3.
 
Canon 1D Mark III APS-H 10.1 3888 2592none22.711.7107871
4.
 
Canon 1D Mark IV APS-H 16.0 4896 32641080/30p22.812.0132074
5.
 
Nikon D2Xs APS-C 12.2 4288 2848none22.210.948959
6.
 
Nikon D3 Full Frame 12.1 4256 2832none23.512.2229081
7.
 
Nikon D3X Full Frame 24.4 6048 4032none24.713.7199288
8.
 
Nikon D4 Full Frame 16.2 4928 32801080/30p24.713.1296589
9.
 
Nikon D4S Full Frame 16.2 4928 32801080/60p24.413.3307489
10.
 
Nikon D5 Full Frame 20.7 5588 37124K/30p25.112.3234388
11.
 
Nikon D300S APS-C 12.2 4288 2848720/24p22.512.278770
12.
 
Nikon D700 Full Frame 12.1 4256 2832none23.512.2230380
13.
 
Olympus E-PL1 Four Thirds 12.2 4032 3024720/30p21.510.148754
14.
 
Olympus E-PL2 Four Thirds 12.2 4032 3024720/30p21.410.257355
15.
 
Olympus E-PL3 Four Thirds 12.2 4032 30241080/60i20.910.349952
16.
 
Olympus E-PM2 Four Thirds 15.9 4608 34561080/30p22.712.293272
17.
 
Panasonic G2 Four Thirds 12.0 4000 3000720/30p21.210.349353

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the E-PM1 provides a better video resolution than the D3S. It can shoot movie footage at 1080/60i, while the Nikon is limited to 720/24p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the D3S has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the E-PM1 relies on live view and the rear LCD for framing. That said, the E-PM1 can be equipped with an optional viewfinder – the VF-2. The following table reports on some other key feature differences and similarities of the Nikon D3S, the Olympus E-PM1, and comparable cameras.

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Core Features
  empty 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 D3Soptical Y3.0 / 921 fixed n 1/8000s 11.0/s n n
2.
 
Olympus E-PM1optional n3.0 / 460 fixed n 1/4000s 5.5/s n Y
3.
 
Canon 1D Mark IIIoptical Y3.0 / 230 fixed n 1/8000s 10.0/s n n
4.
 
Canon 1D Mark IVoptical Y3.0 / 920 fixed n 1/8000s 10.0/s n n
5.
 
Nikon D2Xsoptical Y2.5 / 230 fixed n 1/8000s 5.0/s n n
6.
 
Nikon D3optical Y3.0 / 922 fixed n 1/8000s 11.0/s n n
7.
 
Nikon D3Xoptical Y3.0 / 922 fixed n 1/8000s 5.0/s n n
8.
 
Nikon D4optical Y3.2 / 921 fixed n 1/8000s 11.0/s n n
9.
 
Nikon D4Soptical Y3.2 / 921 fixed n 1/8000s 11.0/s n n
10.
 
Nikon D5optical Y3.2 / 2359 fixed Y 1/8000s 14.0/s n n
11.
 
Nikon D300Soptical Y3.0 / 920 fixed n 1/8000s 7.0/s Y n
12.
 
Nikon D700optical Y3.0 / 922 fixed n 1/8000s 8.0/s Y n
13.
 
Olympus E-PL1optional n2.7 / 230 fixed n 1/2000s 3.0/s Y Y
14.
 
Olympus E-PL2optional n3.0 / 460 fixed n 1/4000s 3.0/s Y Y
15.
 
Olympus E-PL3optional n3.0 / 460 tilting n 1/4000s 5.5/s n Y
16.
 
Olympus E-PM2optional n3.0 / 460 fixed Y 1/4000s 8.0/s n Y
17.
 
Panasonic G21440 n3.0 / 460 swivel Y 1/4000s 2.6/s Y n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the D3S, but is missing on the E-PM1 is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

The Nikon D3S 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 D3S writes its imaging data to Compact Flash cards, while the E-PM1 uses SDXC cards. The D3S features dual card slots, which can be very useful in case a memory card fails. In contrast, the E-PM1 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 D3S and Olympus PEN E-PM1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Nikon D3SYstereo / ---mini2.0---
2.
 
Olympus E-PM1Ystereo / mono--mini2.0---
3.
 
Canon 1D Mark IIIY- / ----2.0---
4.
 
Canon 1D Mark IVYstereo / -Y-mini2.0---
5.
 
Nikon D2XsY- / ----2.0---
6.
 
Nikon D3Y- / ---mini2.0---
7.
 
Nikon D3XY- / ---mini2.0---
8.
 
Nikon D4Ymono / monoYYmicro2.0---
9.
 
Nikon D4SYmono / monoYYmini2.0---
10.
 
Nikon D5Ystereo / monoYYmini3.0---
11.
 
Nikon D300SYstereo / monoY-mini2.0---
12.
 
Nikon D700Y- / ---mini2.0---
13.
 
Olympus E-PL1Ystereo / ---mini2.0---
14.
 
Olympus E-PL2Ystereo / ---mini2.0---
15.
 
Olympus E-PL3Ystereo / ---mini2.0---
16.
 
Olympus E-PM2Ystereo / mono--mini2.0---
17.
 
Panasonic G2Ystereo / mono--mini2.0---

Studio photographers will appreciate that the Nikon D3S (unlike the E-PM1) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the D3S and the E-PM1 have been discontinued, but can regularly be found used on ebay. The D3S was replaced by the Nikon D4, while the E-PM1 was followed by the Olympus E-PM2. Further information on the features and operation of the D3S and E-PM1 can be found, respectively, in the Nikon D3S Manual (free pdf) or the online Olympus E-PM1 Manual.

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Review summary

So what is the bottom line? Is the Nikon D3S better than the Olympus E-PM1 or vice versa? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Nikon D3S:

  • Better image quality: Scores substantially higher (30 points) in the DXO overall assessment.
  • Richer colors: Generates images with noticeably better colors (2.5 bits more color depth).
  • More dynamic range: Captures a larger spectrum of light and dark details (1.7 EV of extra DR).
  • Better low-light sensitivity: Requires less light for good images (2.7 stops ISO advantage).
  • Easier framing: Has an optical viewfinder for image composition and settings control.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • More detailed LCD: Has a higher resolution rear screen (921k vs 460k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (11 vs 5.5 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
  • Longer lasting: Can take more shots (4200 versus 330) on a single battery charge.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • 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 on the market for longer (launched in October 2009).

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Arguments in favor of the Olympus PEN E-PM1:

  • Better video: Provides higher definition movie capture (1080/60i vs 720/24p).
  • More compact: Is smaller (110x64mm vs 160x157mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 975g or 79 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 affordable: Was introduced into a lower priced category (90 percent cheaper at launch).
  • More modern: Was introduced somewhat (1 year and 8 months) more recently.

If the count of relative strengths (bullet points above) is taken as a measure, the D3S is the clear winner of the match-up (16 : 7 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 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.

D3S 16:07 E-PM1

How about other alternatives? Do the specifications of the Nikon D3S and the Olympus E-PM1 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 D3S or the E-PM1. 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 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
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
1.
 
Nikon D3S5/5....89/1004.5/55/5 Oct 2009 US$ 5 199ebay.com
2.
 
Olympus E-PM1..86/100..71/1004.5/54.5/5 Jun 2011 US$ 499ebay.com
3.
 
Canon 1D Mark III............ Feb 2007 US$ 4 499ebay.com
4.
 
Canon 1D Mark IV5/5....89/100.... Oct 2009 US$ 4 999ebay.com
5.
 
Nikon D2Xs............ Jun 2006 US$ 4 699ebay.com
6.
 
Nikon D3......+ +5/54.5/5 Aug 2007 US$ 4 999ebay.com
7.
 
Nikon D3X......86/1004/55/5 Dec 2008 US$ 7 999ebay.com
8.
 
Nikon D4........4.5/54.5/5 Jan 2012 US$ 5 999ebay.com
9.
 
Nikon D4S5/5......4.5/54.5/5 Feb 2014 US$ 6 499ebay.com
10.
 
Nikon D5....4/589/1004.5/55/5 Jan 2016 US$ 6 499ebay.com
11.
 
Nikon D300S5/5+ +..82/1004/54.5/5 Jul 2009 US$ 1 799ebay.com
12.
 
Nikon D700..89/100..+ +4.5/54.5/5 Jul 2008 US$ 2 999ebay.com
13.
 
Olympus E-PL1..86/100..69/1004/54.5/5 Feb 2010 US$ 599ebay.com
14.
 
Olympus E-PL23/583/100..71/1004.5/54.5/5 Jan 2011 US$ 599ebay.com
15.
 
Olympus E-PL33/5+ +..72/1004.5/54/5 Jun 2011 US$ 599ebay.com
16.
 
Olympus E-PM23/5....77/1005/54.5/5 Sep 2012 US$ 499ebay.com
17.
 
Panasonic G2......72/1004/54.5/5 Mar 2010 US$ 599ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. 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. 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? If you would like to see a different side-by-side camera review, just use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Nikon D3S vs Olympus E-PM1

    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 D3S Olympus E-PM1
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Nikon F mount lenses Micro Four Thirds lenses
    Launch Date October 2009 June 2011
    Launch Price USD 5,199 USD 499
    Sensor Specs Nikon D3S Olympus E-PM1
    Sensor Technology CMOS CMOS
    Sensor Format Full Frame Sensor Four Thirds Sensor
    Sensor Size 36.0 x 23.9 mm 17.3 x 13.0 mm
    Sensor Area 860.4 mm2 224.9 mm2
    Sensor Diagonal 43.2 mm 21.6 mm
    Crop Factor 1.0x 2.0x
    Sensor Resolution 12.1 Megapixels 12.2 Megapixels
    Image Resolution 4256 x 2832 pixels 4032 x 3024 pixels
    Pixel Pitch 8.43 μm 4.29 μm
    Pixel Density 1.40 MP/cm2 5.42 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 720/24p Video 1080/60i Video
    ISO Setting 200 - 12,800 ISO 100 - 12,800 ISO
    ISO Boost 100 - 102,400 ISO no Enhancement
    Image Processor EXPEED TruePic VI
    DXO Sensor Quality (score) 82 52
    DXO Color Depth (bits) 23.5 21.0
    DXO Dynamic Range (EV) 12.0 10.3
    DXO Low Light (ISO) 3253 499
    Screen Specs Nikon D3S Olympus E-PM1
    Viewfinder Type Optical viewfinder Viewfinder optional
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.70x
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 921k dots 460k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Nikon D3S Olympus E-PM1
    Focus System Phase-detect AF Contrast-detect AF
    Continuous Shooting 11 shutter flaps/s 5.5 shutter flaps/s
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium CF cards SDXC cards
    Single or Dual Card Slots Dual card slots Single card slot
    Connectivity Specs Nikon D3S Olympus E-PM1
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI mini HDMI
    Wifi Support no Wifi no Wifi
    Body Specs Nikon D3S Olympus E-PM1
    Environmental SealingWeathersealed bodynot weather sealed
    Battery Type Nikon EN-EL4a Olympus BLS-5
    Battery Life (CIPA)4200 shots per charge330 shots per charge
    Body Dimensions 160 x 157 x 88 mm
    (6.3 x 6.2 x 3.5 in)
    110 x 64 x 34 mm
    (4.3 x 2.5 x 1.3 in)
    Camera Weight 1240 g (43.7 oz) 265 g (9.3 oz)
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