Canon 5D Mark II vs Nikon D3100
The Canon EOS 5D Mark II and the Nikon D3100 are two digital cameras that were announced, respectively, in September 2008 and August 2010. Both are DSLR (Digital Single Lens Reflex) cameras that are based on a full frame (5D Mark II) and an APS-C (D3100) sensor. The Canon has a resolution of 21 megapixels, whereas the Nikon provides 14.2 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Canon 5D Mark II||Nikon D3100|
|Digital single lens reflex||Digital single lens reflex|
|Canon EF mount lenses||Nikon F mount lenses|
|21 MP, Full Frame Sensor||14.2 MP, APS-C Sensor|
|1080/30p Video||1080/24p Video|
|ISO 100-6400 (50-25600)||ISO 100-3200 (100-12800)|
|Optical viewfinder||Optical viewfinder|
|3.0" LCD, 920k dots||3.0" LCD, 230k dots|
|Fixed screen (not touch-sensitive)||Fixed screen (not touch-sensitive)|
|3.9 shutter flaps per second||3 shutter flaps per second|
|Weathersealed body||Not weather sealed|
|850 shots per battery charge||550 shots per battery charge|
|152 x 114 x 75 mm, 850 g||124 x 96 x 75 mm, 505 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 5D Mark II and the Nikon D3100? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.
Body comparison: Canon 5D Mark II vs Nikon D3100
The side-by-side display below illustrates the physical size and weight of the Canon 5D Mark II and the Nikon D3100. 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 D3100 can be obtained in two different colors (black, red), while the 5D Mark II is only available in black.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon D3100 is considerably smaller (31 percent) than the Canon 5D Mark II. Moreover, the D3100 is substantially lighter (41 percent) than the 5D Mark II. It is worth mentioning in this context that the 5D Mark II is splash and dust resistant, while the D3100 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 (5D Mark II) and the Nikon Lens Catalog (D3100).
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.
|Canon 5D Mark II»||6.0 in||4.5 in||3.0 in||30.0 oz||850||Y||Sep 2008||3,499||-||Canon 5D Mark II|
|Nikon D3100«||4.9 in||3.8 in||3.0 in||17.8 oz||550||n||Aug 2010||599||-||Nikon D3100|
|Canon 1D X Mark II« »||6.2 in||6.6 in||3.3 in||54.0 oz||1210||Y||Feb 2016||5,999||Canon 1D X Mark II|
|Canon 5D Mark IV« »||5.9 in||4.6 in||3.0 in||31.4 oz||900||Y||Aug 2016||3,499||Canon 5D Mark IV|
|Canon 5DS« »||6.0 in||4.6 in||3.0 in||32.8 oz||700||Y||Feb 2015||3,699||Canon 5DS|
|Canon 5DS R« »||6.0 in||4.6 in||3.0 in||32.8 oz||700||Y||Feb 2015||3,699||Canon 5DS R|
|Canon 5D Mark III« »||6.0 in||4.6 in||3.0 in||33.5 oz||950||Y||Mar 2012||3,499||-||Canon 5D Mark III|
|Canon 6D« »||5.7 in||4.4 in||2.8 in||27.2 oz||1090||Y||Sep 2012||2,099||-||Canon 6D|
|Canon 1D X« »||6.2 in||6.6 in||3.3 in||54.7 oz||1120||Y||Oct 2011||6,799||-||Canon 1D X|
|Canon 7D« »||5.8 in||4.4 in||2.9 in||30.3 oz||800||Y||Sep 2009||1,699||-||Canon 7D|
|Canon 1Ds Mark III« »||5.9 in||6.3 in||3.1 in||48.9 oz||1800||Y||Aug 2007||7,999||-||Canon 1Ds Mark III|
|Canon 5D« »||6.0 in||4.4 in||3.0 in||31.6 oz||400||Y||Aug 2005||3,299||-||Canon 5D|
|Nikon D3200« »||4.9 in||3.8 in||3.0 in||17.8 oz||540||n||Apr 2012||599||-||Nikon D3200|
|Nikon D5100« »||5.0 in||3.8 in||3.1 in||19.8 oz||660||n||Apr 2011||749||-||Nikon D5100|
|Nikon D7000« »||5.2 in||4.1 in||3.0 in||27.5 oz||1050||Y||Sep 2010||1,499||-||Nikon D7000|
|Nikon D3000« »||5.0 in||3.8 in||2.5 in||18.9 oz||500||n||Jul 2009||599||-||Nikon D3000|
|Nikon D5000« »||5.0 in||4.1 in||3.1 in||20.8 oz||510||n||Apr 2009||749||-||Nikon D5000|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
The price is, of course, an important factor in any camera decision. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The D3100 was launched at a markedly lower price (by 83 percent) than the 5D Mark II, 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: Canon 5D Mark II vs Nikon D3100
The size of the imaging sensor is a crucial determinant 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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to 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 Canon 5D Mark II features a full frame sensor and the Nikon D3100 an APS-C sensor. The sensor area in the D3100 is 59 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
With 21MP, the 5D Mark II offers a higher resolution than the D3100 (14.2MP), but the 5D Mark II nevertheless has larger individual pixels (pixel pitch of 6.41μm versus 5.01μm for the D3100) due to its larger sensor. However, the D3100 is a somewhat more recent model (by 1 year and 11 months) than the 5D Mark II, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels.
The resolution advantage of the Canon 5D Mark II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 5D Mark II for good quality output (200 dots per inch) amounts to 28.1 x 18.7 inch or 71.3 x 47.5 cm, for very good quality (250 dpi) 22.5 x 15 inch or 57.1 x 38 cm, and for excellent quality (300 dpi) 18.7 x 12.5 inch or 47.5 x 31.7 cm. The corresponding values for the Nikon D3100 are 23 x 15.4 inch or 58.5 x 39 cm for good quality, 18.4 x 12.3 inch or 46.8 x 31.2 cm for very good quality, and 15.4 x 10.2 inch or 39 x 26 cm for excellent quality prints.
The Canon EOS 5D Mark II 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 Nikon D3100 are ISO 100 to ISO 3200, with the possibility to increase the ISO range to 100-12800.
For many cameras, data on sensor performance has been reported by DXO Mark. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under review, the 5D Mark II provides substantially higher image quality than the D3100, with an overall score that is 12 points higher. This advantage is based on 1.2 bits higher color depth, 0.6 EV in additional dynamic range, and 1 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Canon 5D Mark II»||Full Frame||21.0||5616||3744||1080/30p||23.7||11.9||1815||79||Canon 5D Mark II|
|Nikon D3100«||APS-C||14.2||4608||3072||1080/24p||22.5||11.3||919||67||Nikon D3100|
|Canon 1D X Mark II« »||Full Frame||20.0||5472||3648||4K/60p||24.1||13.5||3207||88||Canon 1D X Mark II|
|Canon 5D Mark IV« »||Full Frame||30.1||6720||4480||4K/30p||24.8||13.6||2995||91||Canon 5D Mark IV|
|Canon 5DS« »||Full Frame||50.3||8688||5792||1080/30p||24.7||12.4||2381||87||Canon 5DS|
|Canon 5DS R« »||Full Frame||50.3||8688||5792||1080/30p||24.6||12.4||2308||86||Canon 5DS R|
|Canon 5D Mark III« »||Full Frame||22.1||5760||3840||1080/30p||24.0||11.7||2293||81||Canon 5D Mark III|
|Canon 6D« »||Full Frame||20.0||5472||3648||1080/30p||23.8||12.1||2340||82||Canon 6D|
|Canon 1D X« »||Full Frame||17.9||5184||3456||1080/30p||23.8||11.8||2786||82||Canon 1D X|
|Canon 7D« »||APS-C||17.9||5184||3456||1080/30p||22.0||11.7||854||66||Canon 7D|
|Canon 1Ds Mark III« »||Full Frame||21.0||5616||3744||-||24.0||12.0||1663||80||Canon 1Ds Mark III|
|Canon 5D« »||Full Frame||12.7||4368||2912||-||22.9||11.1||1368||71||Canon 5D|
|Nikon D3200« »||APS-C||24.1||6016||4000||1080/30p||24.1||13.2||1131||81||Nikon D3200|
|Nikon D5100« »||APS-C||16.1||4928||3264||1080/30p||23.5||13.6||1183||80||Nikon D5100|
|Nikon D7000« »||APS-C||16.1||4928||3264||10800/24p||23.5||13.9||1167||80||Nikon D7000|
|Nikon D3000« »||APS-C||10.0||3872||2592||-||22.3||11.1||563||62||Nikon D3000|
|Nikon D5000« »||APS-C||12.2||4288||2848||720/24p||22.7||12.5||868||72||Nikon D5000|
Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the 5D Mark II provides a higher frame rate than the D3100. It can shoot video footage at 1080/30p, while the Nikon is limited to 1080/24p.
Feature comparison: Canon 5D Mark II vs Nikon D3100
Apart from body and sensor, cameras can and do differ across a range of features. The 5D Mark II and the D3100 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 5D Mark II offers a wider field of view (98%) than the one in the D3100 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the 5D Mark II has a higher magnification (0.71x vs 0.53x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Canon 5D Mark II and Nikon D3100 in connection with corresponding information for a sample of similar cameras.
|Canon 5D Mark II»||optical||Y||3.0||920||fixed||n||1/8000s||3.9||n||n||Canon 5D Mark II|
|Nikon D3100«||optical||n||3.0||230||fixed||n||1/4000s||3.0||Y||n||Nikon D3100|
|Canon 1D X Mark II« »||optical||Y||3.2||1620||fixed||Y||1/8000s||16.0||n||n||Canon 1D X Mark II|
|Canon 5D Mark IV« »||optical||Y||3.2||1620||fixed||Y||1/8000s||7.0||n||n||Canon 5D Mark IV|
|Canon 5DS« »||optical||Y||3.2||1040||fixed||n||1/8000s||5.0||n||n||Canon 5DS|
|Canon 5DS R« »||optical||Y||3.2||1040||fixed||n||1/8000s||5.0||n||n||Canon 5DS R|
|Canon 5D Mark III« »||optical||Y||3.2||1040||fixed||n||1/8000s||6.0||n||n||Canon 5D Mark III|
|Canon 6D« »||optical||Y||3.0||1040||fixed||n||1/4000s||4.5||n||n||Canon 6D|
|Canon 1D X« »||optical||Y||3.2||1040||fixed||n||1/8000s||14.0||n||n||Canon 1D X|
|Canon 7D« »||optical||Y||3.0||920||fixed||n||1/8000s||8.0||Y||n||Canon 7D|
|Canon 1Ds Mark III« »||optical||Y||3.0||230||fixed||n||1/8000s||5.0||n||n||Canon 1Ds Mark III|
|Canon 5D« »||optical||Y||2.5||230||fixed||n||1/8000s||3.0||n||n||Canon 5D|
|Nikon D3200« »||optical||n||3.0||921||fixed||n||1/4000s||4.0||Y||n||Nikon D3200|
|Nikon D5100« »||optical||n||3.0||921||swivel||n||1/4000s||4.0||Y||n||Nikon D5100|
|Nikon D7000« »||optical||Y||3.0||921||fixed||n||1/8000s||6.0||Y||n||Nikon D7000|
|Nikon D3000« »||optical||n||3.0||230||fixed||n||1/4000s||3.0||Y||n||Nikon D3000|
|Nikon D5000« »||optical||n||2.7||230||full-flex||n||1/4000s||4.0||Y||n||Nikon D5000|
One feature that is present on the 5D Mark II, but is missing on the D3100 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 5D Mark II writes its imaging data to Compact Flash cards, while the D3100 uses SDXC cards.
Connectivity comparison: Canon 5D Mark II vs Nikon D3100
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 5D Mark II and Nikon D3100 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Canon 5D Mark II»||Y||mono||mono||Y||-||mini||2.0||-||-||-||Canon 5D Mark II|
|Nikon D3100«||Y||mono||mono||-||-||mini||2.0||-||-||-||Nikon D3100|
|Canon 1D X Mark II« »||Y||mono||mono||Y||Y||mini||3.0||-||-||-||Canon 1D X Mark II|
|Canon 5D Mark IV« »||Y||mono||mono||Y||Y||mini||3.0||Y||Y||-||Canon 5D Mark IV|
|Canon 5DS« »||Y||mono||mono||Y||-||mini||3.0||-||-||-||Canon 5DS|
|Canon 5DS R« »||Y||mono||mono||Y||-||mini||3.0||-||-||-||Canon 5DS R|
|Canon 5D Mark III« »||Y||mono||mono||Y||Y||mini||2.0||-||-||-||Canon 5D Mark III|
|Canon 6D« »||Y||mono||mono||Y||-||mini||2.0||Y||-||-||Canon 6D|
|Canon 1D X« »||Y||mono||-||Y||-||mini||2.0||-||-||-||Canon 1D X|
|Canon 7D« »||Y||mono||-||Y||-||mini||2.0||-||-||-||Canon 7D|
|Canon 1Ds Mark III« »||Y||-||-||-||-||-||2.0||-||-||-||Canon 1Ds Mark III|
|Canon 5D« »||Y||-||-||-||-||-||2.0||-||-||-||Canon 5D|
|Nikon D3200« »||Y||mono||mono||Y||-||mini||2.0||-||-||-||Nikon D3200|
|Nikon D5100« »||Y||mono||mono||Y||-||mini||2.0||-||-||-||Nikon D5100|
|Nikon D7000« »||Y||mono||mono||Y||-||mini||2.0||-||-||-||Nikon D7000|
|Nikon D3000« »||Y||-||-||-||-||-||2.0||-||-||-||Nikon D3000|
|Nikon D5000« »||Y||mono||mono||-||-||mini||2.0||-||-||-||Nikon D5000|
It is notable that the 5D Mark II has a microphone port, which is missing on the D3100. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.
Studio photographers will appreciate that the Canon 5D Mark II (unlike the D3100) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the 5D Mark II and the D3100 have been discontinued, but can regularly be found used on eBay. The 5D Mark II was replaced by the Canon 5D Mark III, while the D3100 was followed by the Nikon D3200. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Nikon websites.
Review summary: Canon 5D Mark II vs Nikon D3100
So how do things add up? Is there a clear favorite between the Canon 5D Mark II and the Nikon D3100? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Reasons to prefer the Canon EOS 5D Mark II:
- More detail: Offers more megapixels (21 vs 14.2MP) with a 22% higher linear resolution.
- Better image quality: Scores substantially higher (12 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (1.2 bits more color depth).
- More dynamic range: Captures a larger spectrum of light and dark details (0.6 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (1 stops ISO advantage).
- Better video: Provides higher movie framerates (1080/30p versus 1080/24p).
- Better sound: Can connect to an external microphone for higher quality sound recording.
- More complete view: Has a viewfinder with a larger field of view (98% vs 95%).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.71x vs 0.53x).
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- More detailed LCD: Has a higher resolution rear screen (920k vs 230k dots).
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (3.9 vs 3 flaps/sec) to capture the decisive moment.
- Longer lasting: Can take more shots (850 versus 550) 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.
- More heavily discounted: Has been on the market for longer (launched in September 2008).
Advantages of the Nikon D3100:
- More compact: Is smaller (124x96mm vs 152x114mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 345g or 41 percent) and is thus easier to take along.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was introduced into a lower priced category (83 percent cheaper at launch).
- More modern: Was introduced somewhat (1 year and 11 months) more recently.
If the count of relative strengths (bullet points above) is taken as a measure, the 5D Mark II is the clear winner of the match-up (17 : 5 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera. 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.
How about other alternatives? Do the specifications of the Canon 5D Mark II and the Nikon D3100 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 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 5D Mark II or the D3100. 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: Canon 5D Mark II vs Nikon D3100
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 (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
|Canon 5D Mark II»||91/100||79/100||4/5||5/5||-||Sep 2008||3,499||-||Canon 5D Mark II|
|Nikon D3100«||+ +||72/100||4.5/5||5/5||4.5/5||Aug 2010||599||-||Nikon D3100|
|Canon 1D X Mark II« »||-||89/100||4.5/5||5/5||4.5/5||Feb 2016||5,999||Canon 1D X Mark II|
|Canon 5D Mark IV« »||+ +||87/100||4.5/5||5/5||4.5/5||Aug 2016||3,499||Canon 5D Mark IV|
|Canon 5DS« »||+||83/100||4.5/5||5/5||4.5/5||Feb 2015||3,699||Canon 5DS|
|Canon 5DS R« »||+||83/100||5/5||5/5||4.5/5||Feb 2015||3,699||Canon 5DS R|
|Canon 5D Mark III« »||+ +||82/100||4.5/5||5/5||4.5/5||Mar 2012||3,499||-||Canon 5D Mark III|
|Canon 6D« »||+ +||83/100||4.5/5||4.5/5||4.5/5||Sep 2012||2,099||-||Canon 6D|
|Canon 1D X« »||-||-||4.5/5||4.5/5||4.5/5||Oct 2011||6,799||-||Canon 1D X|
|Canon 7D« »||+ +||84/100||4.5/5||5/5||4.5/5||Sep 2009||1,699||-||Canon 7D|
|Canon 1Ds Mark III« »||-||+ +||4.5/5||-||-||Aug 2007||7,999||-||Canon 1Ds Mark III|
|Canon 5D« »||88/100||+ +||o||o||-||Aug 2005||3,299||-||Canon 5D|
|Nikon D3200« »||+ +||73/100||4.5/5||4.5/5||4.5/5||Apr 2012||599||-||Nikon D3200|
|Nikon D5100« »||+ +||76/100||4.5/5||5/5||4.5/5||Apr 2011||749||-||Nikon D5100|
|Nikon D7000« »||-||80/100||4.5/5||5/5||4.5/5||Sep 2010||1,499||-||Nikon D7000|
|Nikon D3000« »||+||72/100||4/5||3.5/5||4.5/5||Jul 2009||599||-||Nikon D3000|
|Nikon D5000« »||+ +||75/100||4/5||5/5||4.5/5||Apr 2009||749||-||Nikon D5000|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.|
The review scores listed above should be treated with care, 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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.
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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- Canon 5D Mark II vs Leica TL2
- Canon 5D Mark II vs Nikon D3300
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- Canon 5D Mark II vs Panasonic G7
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- Nikon D3100 vs Nikon D500
- Nikon D3100 vs Nikon W150
- Nikon D3100 vs Nikon Z7
Specifications: Canon 5D Mark II vs Nikon D3100
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 Model||Canon 5D Mark II||Nikon D3100|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Nikon F mount lenses|
|Launch Date||September 2008||August 2010|
|Launch Price||USD 3499||USD 599|
|Sensor Specs||Canon 5D Mark II||Nikon D3100|
|Sensor Format||Full Frame Sensor||APS-C Sensor|
|Sensor Size||36.0 x 24.0 mm||23.1 x 15.4 mm|
|Sensor Area||864 mm2||355.74 mm2|
|Sensor Diagonal||43.3 mm||27.8 mm|
|Sensor Resolution||21 Megapixels||14.2 Megapixels|
|Image Resolution||5616 x 3744 pixels||4608 x 3072 pixels|
|Pixel Pitch||6.41 μm||5.01 μm|
|Pixel Density||2.43 MP/cm2||3.98 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||1080/24p Video|
|ISO Setting||100-6400 ISO||100-3200 ISO|
|ISO Boost||50-25600 ISO||100-12800 ISO|
|Image Processor||DIGIC 4||EXPEED 2|
|DXO Sensor Quality (score)||79||67|
|DXO Color Depth (bits)||23.7||22.5|
|DXO Dynamic Range (EV)||11.9||11.3|
|DXO Low Light (ISO)||1815||919|
|Screen Specs||Canon 5D Mark II||Nikon D3100|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||98%||95%|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0 inch||3.0 inch|
|LCD Resolution||920k dots||230k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon 5D Mark II||Nikon D3100|
|Autofocus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||3.9 shutter flaps/s||3 shutter flaps/s|
|Shutter Life Expectancy||150 000 actuations||100 000 actuations|
|Fill Flash||no On-Board Flash||Build-in Flash|
|Storage Medium||CF cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Canon 5D Mark II||Nikon D3100|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||mini HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon 5D Mark II||Nikon D3100|
|Environmental Sealing||Weathersealed body||Not weather sealed|
|Battery Type||LP-E6 power pack||EN-EL14 power pack|
|Battery Life (CIPA)||850 shots per charge||550 shots per charge|
152 x 114 x 75 mm
(6.0 x 4.5 x 3.0 in)
124 x 96 x 75 mm
(4.9 x 3.8 x 3.0 in)
|Camera Weight||850 g (30.0 oz)||505 g (17.8 oz)|
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