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Canon 20D vs Nikon D3

The Canon EOS 20D and the Nikon D3 are two digital cameras that were officially introduced, respectively, in August 2004 and August 2007. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (20D) and a full frame (D3) sensor. The Canon has a resolution of 8.2 megapixels, whereas the Nikon provides 12.1 MP.

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

Headline Specifications
Canon 20D
versus
Nikon D3
Canon 20D   Nikon D3
Digital single lens reflex Digital single lens reflex
Canon EF mount lenses Nikon F mount lenses
8.2 MP – APS-C sensor 12.1 MP – Full Frame sensor
no Video no Video
ISO 100-1,600 (100 - 3,200) ISO 200-6,400 (100 - 25,600)
Optical viewfinder Optical viewfinder
1.8" LCD – 118k dots 3.0" LCD – 922k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
5 shutter flaps per second 11 shutter flaps per second
not weather sealedWeathersealed body
700 shots per battery charge4300 shots per battery charge
144 x 106 x 72 mm, 770 g 160 x 157 x 88 mm, 1300 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 20D and the Nikon D3? 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 Canon 20D and the Nikon D3 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 width, height and depth dimensions are rounded to the nearest millimeter.

Size Canon 20D vs Nikon D3
Compare 20D versus D3 top
Comparison 20D or D3 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon D3 is considerably larger (65 percent) than the Canon 20D. Moreover, the D3 is substantially heavier (69 percent) than the 20D. It is noteworthy in this context that the D3 is splash and dust-proof, while the 20D 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 Canon EF Lens Catalog (20D) and the Nikon Lens Catalog (D3).

Concerning battery life, the 20D gets 700 shots out of its Canon BP-511A battery, while the D3 can take 4300 images on a single charge of its Nikon EN-EL4a power pack. As can be seen in the images above, the D3 has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power. In order to provide similar functionality for the 20D, Canon provides the BG-E2N vertical grip as an optional accessory (see here on ebay).

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 20D 144 mm 106 mm 72 mm 770 g 700 n Aug 2004 1,499ebay.com
2.
 
Nikon D3 160 mm 157 mm 88 mm 1300 g 4300 Y Aug 2007 4,999ebay.com
3.
 
Canon 7D II 149 mm 112 mm 78 mm 910 g 670 Y Sep 2014 1,799ebay.com
4.
 
Canon 60D 145 mm 106 mm 79 mm 755 g 1100 Y Aug 2010 1,399ebay.com
5.
 
Canon 7D 148 mm 111 mm 74 mm 860 g 800 Y Sep 2009 1,699ebay.com
6.
 
Canon 50D 146 mm 108 mm 74 mm 822 g 800 Y Aug 2008 1,299ebay.com
7.
 
Canon 1D Mark III 156 mm 157 mm 80 mm 1155 g 2200 Y Feb 2007 4,499ebay.com
8.
 
Canon 40D 146 mm 108 mm 74 mm 822 g 750 n Aug 2007 1,299ebay.com
9.
 
Canon 30D 144 mm 106 mm 74 mm 785 g 750 n Feb 2006 1,399ebay.com
10.
 
Canon XT 127 mm 94 mm 64 mm 540 g 400 n Feb 2005 899ebay.com
11.
 
Canon 10D 150 mm 107 mm 75 mm 850 g 500 n Feb 2003 1,999ebay.com
12.
 
Canon Rebel 142 mm 99 mm 72 mm 649 g 400 n Aug 2003 899ebay.com
13.
 
Nikon D4 160 mm 157 mm 91 mm 1340 g 2600 Y Jan 2012 5,999ebay.com
14.
 
Nikon D3S 160 mm 157 mm 88 mm 1240 g 4200 Y Oct 2009 5,199ebay.com
15.
 
Nikon D3X 160 mm 157 mm 88 mm 1260 g 4400 Y Dec 2008 7,999ebay.com
16.
 
Nikon D700 147 mm 123 mm 77 mm 1074 g 1000 Y Jul 2008 2,999ebay.com
17.
 
Nikon D200 147 mm 113 mm 74 mm 920 g 400 Y Nov 2005 1,699ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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Any camera decision will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The 20D was launched at a markedly lower price (by 70 percent) than the D3, 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon 20D features an APS-C sensor and the Nikon D3 a full frame sensor. The sensor area in the D3 is 154 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon 20D and Nikon D3 sensor measures

With 12.1MP, the D3 offers a higher resolution than the 20D (8.2MP), but the D3 nevertheless has larger individual pixels (pixel pitch of 8.43μm versus 6.42μm for the 20D) due to its larger sensor. Moreover, the D3 is a much more recent model (by 3 years) than the 20D, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.

The resolution advantage of the Nikon D3 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D3 for good quality output (200 dots per inch) amounts to 21.3 x 14.2 inches or 54.1 x 36 cm, for very good quality (250 dpi) 17 x 11.3 inches or 43.2 x 28.8 cm, and for excellent quality (300 dpi) 14.2 x 9.4 inches or 36 x 24 cm. The corresponding values for the Canon 20D are 17.5 x 11.7 inches or 44.5 x 29.7 cm for good quality, 14 x 9.3 inches or 35.6 x 23.7 cm for very good quality, and 11.7 x 7.8 inches or 29.7 x 19.8 cm for excellent quality prints.

The Canon EOS 20D has a native sensitivity range from ISO 100 to ISO 1600, which can be extended to ISO 100-3200. The corresponding ISO settings for the Nikon D3 are ISO 200 to ISO 6400, with the possibility to increase the ISO range to 100-25600.

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.

20D versus D3 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 consideration, the D3 offers substantially better image quality than the 20D (overall score 19 points higher). The advantage is based on 1.6 bits higher color depth, 1.2 EV in additional dynamic range, and 1.7 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
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon 20D APS-C 8.2 3504 2336none21.911.072162
2.
 
Nikon D3 Full Frame 12.1 4256 2832none23.512.2229081
3.
 
Canon 7D II APS-C 20.0 5472 36481080/60p22.411.8108270
4.
 
Canon 60D APS-C 17.9 5184 34561080/30p22.211.581366
5.
 
Canon 7D APS-C 17.9 5184 34561080/30p22.011.785466
6.
 
Canon 50D APS-C 15.1 4752 3168none21.811.469663
7.
 
Canon 1D Mark III APS-H 10.1 3888 2592none22.711.7107871
8.
 
Canon 40D APS-C 10.1 3888 2592none22.111.370364
9.
 
Canon 30D APS-C 8.2 3504 2336none21.510.873659
10.
 
Canon XT APS-C 8.0 3456 2304none21.810.863760
11.
 
Canon 10D APS-C 6.3 3072 2048none21.110.957157
12.
 
Canon Rebel APS-C 6.3 3072 2048none21.010.854455
13.
 
Nikon D4 Full Frame 16.2 4928 32801080/30p24.713.1296589
14.
 
Nikon D3S Full Frame 12.1 4256 2832720/24p23.512.0325382
15.
 
Nikon D3X Full Frame 24.4 6048 4032none24.713.7199288
16.
 
Nikon D700 Full Frame 12.1 4256 2832none23.512.2230380
17.
 
Nikon D200 APS-C 10.0 3872 2592none22.311.558364
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The D3 offers Live View, so that it can project the live image that the sensor receives onto the rear screen for framing. The 20D lacks this capability. Both cameras are still-image focused and cannot record videos.
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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The 20D and the D3 are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinder in the D3 offers a wider field of view (100%) than the one in the 20D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the D3 has a higher magnification (0.70x vs 0.56x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Canon 20D, the Nikon D3, and comparable cameras.

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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.
 
Canon 20Doptical Y1.8 / 118 fixed n 1/8000s 5.0/s Y n
2.
 
Nikon D3optical Y3.0 / 922 fixed n 1/8000s 11.0/s n n
3.
 
Canon 7D IIoptical Y3.0 / 1040 fixed n 1/8000s 10.0/s Y n
4.
 
Canon 60Doptical Y3.0 / 1040 swivel n 1/8000s 5.3/s Y n
5.
 
Canon 7Doptical Y3.0 / 920 fixed n 1/8000s 8.0/s Y n
6.
 
Canon 50Doptical Y3.0 / 920 fixed n 1/8000s 6.3/s Y n
7.
 
Canon 1D Mark IIIoptical Y3.0 / 230 fixed n 1/8000s 10.0/s n n
8.
 
Canon 40Doptical Y3.0 / 230 fixed n 1/8000s 6.5/s Y n
9.
 
Canon 30Doptical Y2.5 / 230 fixed n 1/8000s 5.0/s Y n
10.
 
Canon XToptical n1.8 / 115 fixed n 1/4000s 3.0/s Y n
11.
 
Canon 10Doptical Y1.8 / 118 fixed n 1/4000s 3.0/s Y n
12.
 
Canon Rebeloptical n1.8 / 118 fixed n 1/4000s 2.5/s Y n
13.
 
Nikon D4optical Y3.2 / 921 fixed n 1/8000s 11.0/s n n
14.
 
Nikon D3Soptical Y3.0 / 921 fixed n 1/8000s 11.0/s n n
15.
 
Nikon D3Xoptical Y3.0 / 922 fixed n 1/8000s 5.0/s n n
16.
 
Nikon D700optical Y3.0 / 922 fixed n 1/8000s 8.0/s Y n
17.
 
Nikon D200optical Y2.5 / 230 fixed n 1/8000s 5.0/s Y n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One difference between the cameras concerns the presence of an on-board flash. The 20D has one, while the D3 does not. While the built-in flash of the 20D is not very powerful, it can at times be useful as a fill-in light.

The Nikon D3 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.

Concerning the storage of imaging data, both the 20D and the D3 write their files to Compact Flash cards. The D3 features dual card slots, which can be very useful in case a memory card fails. In contrast, the 20D 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 Canon EOS 20D and Nikon D3 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.
 
Canon 20DY- / ----1.1---
2.
 
Nikon D3Y- / ---mini2.0---
3.
 
Canon 7D IIYstereo / monoYYmini3.0---
4.
 
Canon 60DYmono / monoY-mini2.0---
5.
 
Canon 7DYmono / -Y-mini2.0---
6.
 
Canon 50DY- / ---mini2.0---
7.
 
Canon 1D Mark IIIY- / ----2.0---
8.
 
Canon 40DY- / ----2.0---
9.
 
Canon 30DY- / ----2.0---
10.
 
Canon XTY- / ----2.0---
11.
 
Canon 10DY- / ----1.1---
12.
 
Canon RebelY- / ----1.1---
13.
 
Nikon D4Ymono / monoYYmicro2.0---
14.
 
Nikon D3SYstereo / ---mini2.0---
15.
 
Nikon D3XY- / ---mini2.0---
16.
 
Nikon D700Y- / ---mini2.0---
17.
 
Nikon D200Y- / ----2.0---
padding

Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.

Both the 20D and the D3 have been discontinued, but can regularly be found used on ebay. The 20D was replaced by the Canon 30D, while the D3 was followed by the Nikon D4. Further information on the features and operation of the 20D and D3 can be found, respectively, in the Canon 20D Manual (free pdf) or the online Nikon D3 Manual.

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Review summary

So what is the bottom line? Is there a clear favorite between the Canon 20D and the Nikon D3? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

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Reasons to prefer the Canon EOS 20D:

  • More compact: Is smaller (144x106mm vs 160x157mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 530g or 41 percent) and hence easier to carry around.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (70 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in August 2004).

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Arguments in favor of the Nikon D3:

  • More detail: Has more megapixels (12.1 vs 8.2MP), which boosts linear resolution by 21%.
  • Better image quality: Scores substantially higher (19 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (1.6 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (1.2 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (1.7 stops ISO advantage).
  • More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.70x vs 0.56x).
  • Larger screen: Has a bigger rear LCD (3.0" vs 1.8") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (922k vs 118k dots).
  • Faster burst: Shoots at higher frequency (11 vs 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: Gets more shots (4300 versus 700) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Faster data transfer: Supports a more advanced USB protocol (2.0 vs 1.1).
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More modern: Reflects 3 years of technical progress since the 20D launch.

If the count of relative strengths (bullet points above) is taken as a measure, the D3 is the clear winner of the contest (17 : 5 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.

20D 05:17 D3

How about other alternatives? Do the specifications of the Canon 20D and the Nikon D3 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 20D or the D3. 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 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
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 20D......+ +.... Aug 2004 1,499ebay.com
2.
 
Nikon D3......+ +5/54.5/5 Aug 2007 4,999ebay.com
3.
 
Canon 7D II4.5/5+3.5/584/1004/54.5/5 Sep 2014 1,799ebay.com
4.
 
Canon 60D5/5+..79/1004/54.5/5 Aug 2010 1,399ebay.com
5.
 
Canon 7D5/5+ +..84/1004.5/54.5/5 Sep 2009 1,699ebay.com
6.
 
Canon 50D..+ +..+ +4.5/54.5/5 Aug 2008 1,299ebay.com
7.
 
Canon 1D Mark III............ Feb 2007 4,499ebay.com
8.
 
Canon 40D..+ +..+ +4.5/54.5/5 Aug 2007 1,299ebay.com
9.
 
Canon 30D..+ +..+ +o.. Feb 2006 1,399ebay.com
10.
 
Canon XT..80/100..+ +o.. Feb 2005 899ebay.com
11.
 
Canon 10D......+ +.... Feb 2003 1,999ebay.com
12.
 
Canon Rebel......+ +.... Aug 2003 899ebay.com
13.
 
Nikon D4........4.5/54.5/5 Jan 2012 5,999ebay.com
14.
 
Nikon D3S5/5....89/1004.5/55/5 Oct 2009 5,199ebay.com
15.
 
Nikon D3X......86/1004/55/5 Dec 2008 7,999ebay.com
16.
 
Nikon D700..89/100..+ +4.5/54.5/5 Jul 2008 2,999ebay.com
17.
 
Nikon D200..+ +..+ +o.. Nov 2005 1,699ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
padding

The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date 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 use the search menu below. 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: Canon 20D vs Nikon D3

    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 Canon 20D Nikon D3
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Canon EF mount lenses Nikon F mount lenses
    Launch Date August 2004 August 2007
    Launch Price USD 1,499 USD 4,999
    Sensor Specs Canon 20D Nikon D3
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 22.5 x 15.0 mm 36.0 x 23.9 mm
    Sensor Area 337.5 mm2 860.4 mm2
    Sensor Diagonal 27 mm 43.2 mm
    Crop Factor 1.6x 1.0x
    Sensor Resolution 8.2 Megapixels 12.1 Megapixels
    Image Resolution 3504 x 2336 pixels 4256 x 2832 pixels
    Pixel Pitch 6.42 μm 8.43 μm
    Pixel Density 2.43 MP/cm2 1.40 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video no Video
    ISO Setting 100 - 1,600 ISO 200 - 6,400 ISO
    ISO Boost 100 - 3,200 ISO 100 - 25,600 ISO
    Image Processor DIGIC 2 EXPEED
    DXO Sensor Quality (score) 62 81
    DXO Color Depth (bits) 21.9 23.5
    DXO Dynamic Range (EV) 11.0 12.2
    DXO Low Light (ISO) 721 2290
    Screen Specs Canon 20D Nikon D3
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.56x 0.70x
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View
    Rear LCD Size 1.8inch 3.0inch
    LCD Resolution 118k dots 922k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Canon 20D Nikon D3
    Focus System Phase-detect AF Phase-detect AF
    Continuous Shooting 5 shutter flaps/s 11 shutter flaps/s
    Shutter Life Expectancy50 000 actuations300 000 actuations
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium CF cards CF cards
    Single or Dual Card Slots Single card slot Dual card slots
    Connectivity Specs Canon 20D Nikon D3
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 1.1 USB 2.0
    HDMI Port no HDMI mini HDMI
    Wifi Support no Wifi no Wifi
    Body Specs Canon 20D Nikon D3
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Canon BP-511A Nikon EN-EL4a
    Battery Life (CIPA)700 shots per charge4300 shots per charge
    Body Dimensions 144 x 106 x 72 mm
    (5.7 x 4.2 x 2.8 in)
    160 x 157 x 88 mm
    (6.3 x 6.2 x 3.5 in)
    Camera Weight 770 g (27.2 oz) 1300 g (45.9 oz)
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