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Nikon D7100 vs Olympus E-3

The Nikon D7100 and the Olympus E-3 are two digital cameras that were announced, respectively, in February 2013 and October 2007. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (D7100) and a Four Thirds (E-3) sensor. The Nikon has a resolution of 24 megapixels, whereas the Olympus provides 10 MP.

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

Headline Specifications
Nikon D7100
versus
Olympus E-3
Nikon D7100   Olympus E-3
Digital single lens reflex Digital single lens reflex
Nikon F mount lenses Four Thirds lenses
24 MP – APS-C sensor 10 MP – Four Thirds sensor
1080/60p Video no Video
ISO 100-6,400 (50 - 25,600) ISO 100-3,200
Optical viewfinder Optical viewfinder
3.2" LCD – 1229k dots 2.5" LCD – 230k dots
Fixed screen (not touch-sensitive) Swivel screen (not touch-sensitive)
6 shutter flaps per second 5 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodyWeathersealed body
950 shots per battery charge750 shots per battery charge
136 x 107 x 76 mm, 765 g 142 x 116 x 75 mm, 876 g
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Check D7100 offers at
ebay.com
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Check E-3 offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D7100 and the Olympus E-3? 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 physical size and weight of the Nikon D7100 and the Olympus E-3 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All size dimensions are rounded to the nearest millimeter.

Size Nikon D7100 vs Olympus E-3
Compare D7100 versus E-3 top
Comparison D7100 or E-3 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-3 is notably larger (13 percent) than the Nikon D7100. Moreover, the E-3 is markedly heavier (15 percent) than the D7100. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

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 (D7100) and the Four Thirds Lens Catalog (E-3).

Concerning battery life, the D7100 gets 950 shots out of its Nikon EN-EL15 battery, while the E-3 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
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
Nikon D7100 136 mm 107 mm 76 mm 765 g 950 i Feb 2013 US$ 1 199ebay.com
2.
 
Olympus E-3 142 mm 116 mm 75 mm 876 g 750 i Oct 2007 US$ 1 699ebay.com
3.
 
Canon 70D 139 mm 104 mm 79 mm 755 g 920 i Jul 2013 US$ 1 199ebay.com
4.
 
Canon 80D 139 mm 105 mm 79 mm 730 g 960 i Feb 2016 US$ 1 199ebay.com
5.
 
Nikon D500 147 mm 115 mm 81 mm 860 g 1240 i Jan 2016 US$ 1 999ebay.com
6.
 
Nikon D600 141 mm 113 mm 82 mm 850 g 900 i Sep 2012 US$ 2 099ebay.com
7.
 
Nikon D610 141 mm 113 mm 82 mm 850 g 900 i Oct 2013 US$ 1 999ebay.com
8.
 
Nikon D750 141 mm 113 mm 78 mm 750 g 1230 i Sep 2014 US$ 2 299ebay.com
9.
 
Nikon D7000 132 mm 105 mm 77 mm 780 g 1050 i Sep 2010 US$ 1 499ebay.com
10.
 
Nikon D7200 136 mm 107 mm 76 mm 765 g 1110 i Mar 2015 US$ 1 199ebay.com
11.
 
Nikon D7500 136 mm 104 mm 73 mm 720 g 950 i Apr 2017 US$ 1 299 amazon.com
12.
 
Olympus E-1 141 mm 104 mm 81 mm 738 g 750 i Jun 2003 US$ 1 699ebay.com
13.
 
Olympus E-5 142 mm 117 mm 75 mm 873 g 750 i Sep 2010 US$ 1 699ebay.com
14.
 
Olympus E-30 142 mm 108 mm 75 mm 701 g 750 i Nov 2008 US$ 1 299ebay.com
15.
 
Olympus E-510 136 mm 92 mm 68 mm 538 g 750 i Mar 2007 US$ 799ebay.com
16.
 
Olympus E-520 136 mm 92 mm 68 mm 535 g 750 i May 2008 US$ 699ebay.com
17.
 
Sony RX10 129 mm 88 mm 102 mm 813 g 420 i Oct 2013 US$ 1 299ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
  empty Camera
Model

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 D7100 was launched at a markedly lower price (by 29 percent) than the E-3, which puts it into a different market segment. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. 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 D7100 features an APS-C sensor and the Olympus E-3 a Four Thirds sensor. The sensor area in the E-3 is 39 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 D7100 has a native 3:2 aspect ratio, while the one in the E-3 offers a 4:3 aspect.

Nikon D7100 and Olympus E-3 sensor measures

With 24MP, the D7100 offers a higher resolution than the E-3 (10MP), but the D7100 has smaller individual pixels (pixel pitch of 3.91μm versus 4.74μm for the E-3). However, the D7100 is a much more recent model (by 5 years and 4 months) than the E-3, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the D7100 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Nikon D7100 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D7100 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Olympus E-3 are 18.2 x 13.7 inches or 46.3 x 34.7 cm for good quality, 14.6 x 10.9 inches or 37.1 x 27.8 cm for very good quality, and 12.2 x 9.1 inches or 30.9 x 23.2 cm for excellent quality prints.

The Nikon D7100 has a native sensitivity range from ISO 100 to ISO 6400, which can be extended to ISO 50-25600. The corresponding ISO settings for the Olympus E-3 are ISO 100 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.

D7100 versus E-3 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 D7100 provides substantially higher image quality than the E-3, with an overall score that is 27 points higher. This advantage is based on 2.6 bits higher color depth, 3.2 EV in additional dynamic range, and 1.1 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 D7100 APS-C 24.0 6000 40001080/60p24.213.7125683
2.
 
Olympus E-3 Four Thirds 10.0 3648 2736i21.610.557156
3.
 
Canon 70D APS-C 20.0 5472 36481080/30p22.511.692668
4.
 
Canon 80D APS-C 24.0 6000 40001080/60p23.613.2113579
5.
 
Nikon D500 APS-C 20.7 5568 37124K/30p24.014.0132483
6.
 
Nikon D600 Full Frame 24.2 6016 40161080/30p25.114.2298094
7.
 
Nikon D610 Full Frame 24.2 6016 40161080/30p25.114.4292594
8.
 
Nikon D750 Full Frame 24.2 6016 40161080/60p24.814.5295693
9.
 
Nikon D7000 APS-C 16.1 4928 32641080/24p23.513.9116780
10.
 
Nikon D7200 APS-C 24.0 6000 40001080/60p24.514.6133387
11.
 
Nikon D7500 APS-C 20.7 5568 37124K/30p24.314.0148386
12.
 
Olympus E-1 Four Thirds 4.9 2560 1920i20.09.7-14544
13.
 
Olympus E-5 Four Thirds 12.2 4032 3024720/30p21.610.551956
14.
 
Olympus E-30 Four Thirds 12.2 4032 3024i21.310.453055
15.
 
Olympus E-510 Four Thirds 10.0 3648 2736i21.210.044252
16.
 
Olympus E-520 Four Thirds 10.0 3648 2736i21.410.454855
17.
 
Sony RX10 1-inch 20.0 5472 36481080/60p22.912.647469
Note: DXO values in italics represent estimates based on sensor size and age.
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
  empty Camera
Model

Many modern cameras cannot only take still pictures, but also record videos. The D7100 indeed provides movie recording capabilities, while the E-3 does not. The highest resolution format that the D7100 can use is 1080/60p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The D7100 and the E-3 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 viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the D7100 has a higher magnification than the one of the E-3 (0.63x vs 0.58x), 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 D7100 and Olympus E-3 along with similar information for a selection of comparators.

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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 D7100optical i3.2 / 1229 fixed i 1/8000s 6.0/s i i
2.
 
Olympus E-3optical i2.5 / 230 swivel i 1/8000s 5.0/s i i
3.
 
Canon 70Doptical i3.0 / 1040 swivel i 1/8000s 7.0/s i i
4.
 
Canon 80Doptical i3.0 / 1040 swivel i 1/8000s 7.0/s i i
5.
 
Nikon D500optical i3.2 / 2359 tilting i 1/8000s 10.0/s i i
6.
 
Nikon D600optical i3.0 / 921 fixed i 1/4000s 5.5/s i i
7.
 
Nikon D610optical i3.2 / 921 fixed i 1/4000s 6.0/s i i
8.
 
Nikon D750optical i3.2 / 1229 tilting i 1/4000s 6.0/s i i
9.
 
Nikon D7000optical i3.0 / 921 fixed i 1/8000s 6.0/s i i
10.
 
Nikon D7200optical i3.2 / 1229 fixed i 1/8000s 6.0/s i i
11.
 
Nikon D7500optical i3.2 / 922 tilting i 1/8000s 8.0/s i i
12.
 
Olympus E-1optical i1.8 / 134 fixed i 1/4000s 3.0/s i i
13.
 
Olympus E-5optical i3.0 / 920 swivel i 1/8000s 5.0/s i i
14.
 
Olympus E-30optical i2.7 / 230 swivel i 1/8000s 5.0/s i i
15.
 
Olympus E-510optical i2.5 / 215 fixed i 1/4000s 3.0/s i i
16.
 
Olympus E-520optical i2.7 / 215 fixed i 1/4000s 3.5/s i i
17.
 
Sony RX101440 i3.0 / 1229 tilting i 1/3200s 10.0/s i i
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
  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
  empty Camera
Model

One feature that differentiates the E-3 and the D7100 is in-body image stabilization (IBIS). The E-3 reduces the risk of handshake-induced blur with all attached lenses, while the D7100 offers no blur reduction with lenses that themselves do not provide optical image stabilization.

The E-3 has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the D7100 does not have a selfie-screen.

The Nikon D7100 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 D7100 writes its imaging data to SDXC cards, while the E-3 uses Compact Flash or xD Picture cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.

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 D7100 and Olympus E-3 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 D7100istereo / monoiimini2.0iii
2.
 
Olympus E-3ii / iiii2.0iii
3.
 
Canon 70Distereo / monoiimini2.0iii
4.
 
Canon 80Distereo / monoiimini2.0iii
5.
 
Nikon D500istereo / monoiimini3.0iii
6.
 
Nikon D600imono / monoiimini2.0iii
7.
 
Nikon D610imono / monoiimini2.0iii
8.
 
Nikon D750istereo / monoiimini2.0iii
9.
 
Nikon D7000imono / monoiimini2.0iii
10.
 
Nikon D7200istereo / monoiimini2.0iii
11.
 
Nikon D7500istereo / monoiimini2.0iii
12.
 
Olympus E-1ii / iiii2.0iii
13.
 
Olympus E-5istereo / iiimini2.0iii
14.
 
Olympus E-30ii / iiii2.0iii
15.
 
Olympus E-510ii / iiii2.0iii
16.
 
Olympus E-520ii / iiii2.0iii
17.
 
Sony RX10istereo / monoiimicro2.0iii
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
  empty Camera
Model

Studio photographers will appreciate that the Olympus E-3 (unlike the D7100) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the D7100 and the E-3 have been discontinued, but can regularly be found used on ebay. The E-3 was replaced by the Olympus E-5, while the D7100 was followed by the Nikon D7200. Further information on the features and operation of the D7100 and E-3 can be found, respectively, in the Nikon D7100 Manual (free pdf) or the online Olympus E-3 Manual.

Review summary

So what conclusions can be drawn? Is there a clear favorite between the Nikon D7100 and the Olympus E-3? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

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Arguments in favor of the Nikon D7100:

  • More detail: Offers more megapixels (24 vs 10MP) with a 58% higher linear resolution.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (27 points) in the DXO overall assessment.
  • Richer colors: Generates images with noticeably better colors (2.6 bits more color depth).
  • More dynamic range: Captures a larger spectrum of light and dark details (3.2 EV of extra DR).
  • Better low-light sensitivity: Requires less light for good images (1.1 stops ISO advantage).
  • Broader imaging potential: Can record not only still images but also 1080/60p movies.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.63x vs 0.58x).
  • Larger screen: Has a bigger rear LCD (3.2" vs 2.5") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 230k dots).
  • Faster burst: Shoots at higher frequency (6 vs 5 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More compact: Is smaller (136x107mm vs 142x116mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 111g or 13 percent) and hence easier to carry around.
  • Longer lasting: Can take more shots (950 versus 750) on a single battery charge.
  • More affordable: Was introduced into a lower priced category (29 percent cheaper at launch).
  • More modern: Reflects 5 years and 4 months of technical progress since the E-3 launch.

ilogo

Advantages of the Olympus E-3:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • 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 October 2007).

If the count of individual advantages (bullet points above) is taken as a guide, the D7100 is the clear winner of the match-up (17 : 6 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

D7100 17:06 E-3

How about other alternatives? Do the specifications of the Nikon D7100 and the Olympus E-3 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 comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the D7100 and the E-3 in practical situations. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews

This is where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular 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 D71005/5+ +..85/1004.5/54.5/5 Feb 2013 US$ 1 199ebay.com
2.
 
Olympus E-3..88/100..+ +o4/5 Oct 2007 US$ 1 699ebay.com
3.
 
Canon 70D5/5+ +..83/1004.5/55/5 Jul 2013 US$ 1 199ebay.com
4.
 
Canon 80D4/5+ +4.5/584/1004.5/54.5/5 Feb 2016 US$ 1 199ebay.com
5.
 
Nikon D5005/5+ +4.7/591/1004.5/55/5 Jan 2016 US$ 1 999ebay.com
6.
 
Nikon D6004/5+ +..87/1005/54.5/5 Sep 2012 US$ 2 099ebay.com
7.
 
Nikon D6104/5+ +..87/1004.5/54.5/5 Oct 2013 US$ 1 999ebay.com
8.
 
Nikon D7505/5+ +4/590/1004.5/54.5/5 Sep 2014 US$ 2 299ebay.com
9.
 
Nikon D70004/5....80/1004.5/54.5/5 Sep 2010 US$ 1 499ebay.com
10.
 
Nikon D72004/5+ +..84/1004.5/54.5/5 Mar 2015 US$ 1 199ebay.com
11.
 
Nikon D75004.5/5+ +4.5/586/1005/54.5/5 Apr 2017 US$ 1 299 amazon.com
12.
 
Olympus E-1......+o.. Jun 2003 US$ 1 699ebay.com
13.
 
Olympus E-54/5....75/1004/54.5/5 Sep 2010 US$ 1 699ebay.com
14.
 
Olympus E-30......71/1004.5/54/5 Nov 2008 US$ 1 299ebay.com
15.
 
Olympus E-510..89/100..+ +3.5/54.5/5 Mar 2007 US$ 799ebay.com
16.
 
Olympus E-520..87/100..+ +4.5/54.5/5 May 2008 US$ 699ebay.com
17.
 
Sony RX105/5+..80/1004.5/54.5/5 Oct 2013 US$ 1 299ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
  empty  Camera 
 Model 

Care should be taken when interpreting the review scores above, 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 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? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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Specifications: Nikon D7100 vs Olympus E-3

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 D7100 Olympus E-3
Camera Type Digital single lens reflex Digital single lens reflex
Camera Lens Nikon F mount lenses Four Thirds lenses
Launch Date February 2013 October 2007
Launch Price USD 1,199 USD 1,699
Sensor Specs Nikon D7100 Olympus E-3
Sensor Technology CMOS CMOS
Sensor Format APS-C Sensor Four Thirds Sensor
Sensor Size 23.5 x 15.6 mm 17.3 x 13.0 mm
Sensor Area 366.6 mm2 224.9 mm2
Sensor Diagonal 28.2 mm 21.6 mm
Crop Factor 1.5x 2.0x
Sensor Resolution 24 Megapixels 10 Megapixels
Image Resolution 6000 x 4000 pixels 3648 x 2736 pixels
Pixel Pitch 3.91 μm 4.74 μm
Pixel Density 6.55 MP/cm2 4.44 MP/cm2
Moiré control no AA filter Anti-Alias filter
Movie Capability 1080/60p Video no Video
ISO Setting 100 - 6,400 ISO 100 - 3,200 ISO
ISO Boost 50 - 25,600 ISO no Enhancement
Image Processor EXPEED 4 TruePic III
DXO Sensor Quality (score) 83 56
DXO Color Depth (bits) 24.2 21.6
DXO Dynamic Range (EV) 13.7 10.5
DXO Low Light (ISO) 1256 571
Screen Specs Nikon D7100 Olympus E-3
Viewfinder Type Optical viewfinder Optical viewfinder
Viewfinder Field of View 100% 100%
Viewfinder Magnification 0.63x 0.58x
Top-Level Screen Control Panel Control Panel
LCD Framing Live View Live View
Rear LCD Size 3.2inch 2.5inch
LCD Resolution 1229k dots 230k dots
LCD Attachment Fixed screen Swivel screen
Shooting Specs Nikon D7100 Olympus E-3
Focus System Phase-detect AF Phase-detect AF
Continuous Shooting 6 shutter flaps/s 5 shutter flaps/s
Shutter Life Expectancy150 000 actuations150 000 actuations
Time-Lapse PhotographyIntervalometer built-inno Intervalometer
Image StabilizationLens stabilization onlyIn-body stabilization
Fill Flash Built-in Flash Built-in Flash
Storage Medium SDXC cards CF or XD cards
Single or Dual Card Slots Dual card slots Dual card slots
Connectivity Specs Nikon D7100 Olympus E-3
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
Microphone Port External MIC port no MIC socket
Headphone Socket Headphone port no Headphone port
Wifi Support no Wifi no Wifi
Body Specs Nikon D7100 Olympus E-3
Environmental SealingWeathersealed bodyWeathersealed body
Battery Type Nikon EN-EL15 Olympus BLM-1
Battery Life (CIPA)950 shots per charge750 shots per charge
Body Dimensions 136 x 107 x 76 mm
(5.4 x 4.2 x 3.0 in)
142 x 116 x 75 mm
(5.6 x 4.6 x 3.0 in)
Camera Weight 765 g (27.0 oz) 876 g (30.9 oz)
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