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Canon 7D II vs Nikon D3100

The Canon EOS 7D Mark II and the Nikon D3100 are two digital cameras that were officially introduced, respectively, in September 2014 and August 2010. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Canon has a resolution of 20 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.

Headline Specifications
Canon 7D II
versus
Nikon D3100
Canon 7D II   Nikon D3100
Digital single lens reflex Digital single lens reflex
Canon EF mount lenses Nikon F mount lenses
20 MP – APS-C sensor 14.2 MP – APS-C sensor
1080/60p Video 1080/24p Video
ISO 100-16,000 (100 - 51,200) ISO 100-3,200 (100 - 12,800)
Optical viewfinder Optical viewfinder
3.0" LCD – 1040k dots 3.0" LCD – 230k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
10 shutter flaps per second 3 shutter flaps per second
Weathersealed bodynot weather sealed
670 shots per battery charge550 shots per battery charge
149 x 112 x 78 mm, 910 g 124 x 96 x 75 mm, 505 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 7D 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

The side-by-side display below illustrates the physical size and weight of the Canon 7D II and the Nikon D3100. 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.

The D3100 can be obtained in two different colors (black, red), while the 7D Mark II is only available in black.

Size Canon 7D II vs Nikon D3100
Compare 7D Mark II versus D3100 top
Comparison 7D Mark II or D3100 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon D3100 is notably smaller (29 percent) than the Canon 7D II. Moreover, the D3100 is substantially lighter (45 percent) than the 7D Mark II. It is worth mentioning in this context that the 7D 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. Yet, since both cameras are based around an APS-C sensor, their respective lenses will tend to have similar dimensions and heft. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (7D Mark II) and the Nikon Lens Catalog (D3100).

Concerning battery life, the 7D Mark II gets 670 shots out of its LP-E6N battery, while the D3100 can take 550 images on a single charge of its EN-EL14 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 7D II 149 mm 112 mm 78 mm 910 g 670 Y Sep 2014 1,799ebay.com
2.
 
Nikon D3100 124 mm 96 mm 75 mm 505 g 550 n Aug 2010 599ebay.com
3.
 
Canon 6D Mark II 144 mm 111 mm 75 mm 765 g 1200 Y Jun 2017 1,999 amazon.com
4.
 
Canon 80D 139 mm 105 mm 79 mm 730 g 960 Y Feb 2016 1,199ebay.com
5.
 
Canon G3 X 123 mm 77 mm 105 mm 733 g 300 Y Jun 2015 999 amazon.com
6.
 
Canon 70D 139 mm 104 mm 79 mm 755 g 920 Y Jul 2013 1,199ebay.com
7.
 
Canon 6D 145 mm 111 mm 71 mm 770 g 1090 Y Sep 2012 2,099ebay.com
8.
 
Canon 60D 145 mm 106 mm 79 mm 755 g 1100 Y Aug 2010 1,399ebay.com
9.
 
Canon 7D 148 mm 111 mm 74 mm 860 g 800 Y Sep 2009 1,699ebay.com
10.
 
Nikon D500 147 mm 115 mm 81 mm 860 g 1240 Y Jan 2016 1,999 amazon.com
11.
 
Nikon D7100 136 mm 107 mm 76 mm 765 g 950 Y Feb 2013 1,199ebay.com
12.
 
Nikon D3200 125 mm 96 mm 77 mm 505 g 540 n Apr 2012 599ebay.com
13.
 
Nikon D5100 128 mm 97 mm 79 mm 560 g 660 n Apr 2011 749ebay.com
14.
 
Nikon D3000 126 mm 97 mm 64 mm 536 g 500 n Jul 2009 599ebay.com
15.
 
Nikon D5000 127 mm 104 mm 80 mm 590 g 510 n Apr 2009 749ebay.com
16.
 
Nikon D40 124 mm 94 mm 64 mm 522 g 470 n Nov 2006 499ebay.com
17.
 
Sony RX10 II 129 mm 88 mm 102 mm 813 g 400 Y Jun 2015 1,299ebay.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 obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The D3100 was launched at a markedly lower price (by 67 percent) than the 7D 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. 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. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.

Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the D3100 is 6 percent bigger. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.6 (7D Mark II) and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon 7D II and Nikon D3100 sensor measures

Despite having a smaller sensor, the Canon 7D II offers a higher resolution of 20 megapixels, compared with 14.2 MP of the Nikon D3100. 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 4.10μm versus 5.01μm for the D3100). However, it should be noted that the 7D Mark II is much more recent (by 4 years) than the D3100, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.

The resolution advantage of the Canon 7D II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 7D Mark II for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inches or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inches or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inches or 46.3 x 30.9 cm. The corresponding values for the Nikon D3100 are 23 x 15.4 inches or 58.5 x 39 cm for good quality, 18.4 x 12.3 inches or 46.8 x 31.2 cm for very good quality, and 15.4 x 10.2 inches or 39 x 26 cm for excellent quality prints.

The 7D Mark II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Canon EOS 7D Mark II has a native sensitivity range from ISO 100 to ISO 16000, which can be extended to ISO 100-51200. 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.

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.

7D Mark II versus D3100 MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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. The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon 7D II APS-C 20.0 5472 36481080/60p22.411.8108270
2.
 
Nikon D3100 APS-C 14.2 4608 30721080/24p22.511.391967
3.
 
Canon 6D Mark II Full Frame 26.0 6240 41601080/60p24.411.9286285
4.
 
Canon 80D APS-C 24.0 6000 40001080/60p23.613.2113579
5.
 
Canon G3 X 1-inch 20.0 5472 36481080/60p21.412.352163
6.
 
Canon 70D APS-C 20.0 5472 36481080/30p22.511.692668
7.
 
Canon 6D Full Frame 20.0 5472 36481080/30p23.812.1234082
8.
 
Canon 60D APS-C 17.9 5184 34561080/30p22.211.581366
9.
 
Canon 7D APS-C 17.9 5184 34561080/30p22.011.785466
10.
 
Nikon D500 APS-C 20.7 5568 37124K/30p24.014.0132483
11.
 
Nikon D7100 APS-C 24.0 6000 40001080/60p24.213.7125683
12.
 
Nikon D3200 APS-C 24.1 6016 40001080/30p24.113.2113181
13.
 
Nikon D5100 APS-C 16.1 4928 32641080/30p23.513.6118380
14.
 
Nikon D3000 APS-C 10.0 3872 2592none22.311.156362
15.
 
Nikon D5000 APS-C 12.2 4288 2848720/24p22.712.586872
16.
 
Nikon D40 APS-C 6.0 3008 2000none21.011.056156
17.
 
Sony RX10 II 1-inch 20.0 5472 36484K/30p23.012.653170

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the 7D Mark II provides a higher frame rate than the D3100. It can shoot video footage at 1080/60p, while the Nikon is limited to 1080/24p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The 7D 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 7D Mark II offers a wider field of view (100%) 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 7D Mark II has a higher magnification (0.63x 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 7D II and Nikon D3100 in connection with corresponding information for a sample of similar cameras.

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Core Features
    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 7D IIoptical Y3.0 / 1040 fixed n 1/8000s 10.0/s Y n
2.
 
Nikon D3100optical n3.0 / 230 fixed n 1/4000s 3.0/s Y n
3.
 
Canon 6D Mark IIoptical Y3.0 / 1040 swivel Y 1/4000s 6.5/s n n
4.
 
Canon 80Doptical Y3.0 / 1040 swivel Y 1/8000s 7.0/s Y n
5.
 
Canon G3 Xoptional n3.2 / 1620 tilting Y 1/2000s 5.9/s Y Y
6.
 
Canon 70Doptical Y3.0 / 1040 swivel Y 1/8000s 7.0/s Y n
7.
 
Canon 6Doptical Y3.0 / 1040 fixed n 1/4000s 4.5/s n n
8.
 
Canon 60Doptical Y3.0 / 1040 swivel n 1/8000s 5.3/s Y n
9.
 
Canon 7Doptical Y3.0 / 920 fixed n 1/8000s 8.0/s Y n
10.
 
Nikon D500optical Y3.2 / 2359 tilting Y 1/8000s 10.0/s n n
11.
 
Nikon D7100optical Y3.2 / 1229 fixed n 1/8000s 6.0/s Y n
12.
 
Nikon D3200optical n3.0 / 921 fixed n 1/4000s 4.0/s Y n
13.
 
Nikon D5100optical n3.0 / 921 swivel n 1/4000s 4.0/s Y n
14.
 
Nikon D3000optical n3.0 / 230 fixed n 1/4000s 3.0/s Y n
15.
 
Nikon D5000optical n2.7 / 230 full-flex n 1/4000s 4.0/s Y n
16.
 
Nikon D40optical n2.5 / 230 fixed n 1/4000s 2.5/s Y n
17.
 
Sony RX10 II2359 Y3.0 / 1229 tilting n 1/3200s 14.0/s Y Y
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the 7D 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 Canon 7D II 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 7D Mark II writes its imaging data to Compact Flash or SDXC cards, while the D3100 uses SDXC cards. The 7D Mark II features dual card slots, which can be very useful in case a memory card fails. In contrast, the D3100 only has one slot. The 7D Mark II supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the D3100 cannot take advantage of Ultra High Speed SD cards.

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 7D Mark II and Nikon D3100 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon 7D IIYstereo / monoYYmini3.0---
2.
 
Nikon D3100Ymono / mono--mini2.0---
3.
 
Canon 6D Mark IIYstereo / monoY-mini2.0YYY
4.
 
Canon 80DYstereo / monoYYmini2.0YY-
5.
 
Canon G3 XYstereo / monoYYmini2.0YY-
6.
 
Canon 70DYstereo / monoY-mini2.0Y--
7.
 
Canon 6DYmono / monoY-mini2.0Y--
8.
 
Canon 60DYmono / monoY-mini2.0---
9.
 
Canon 7DYmono / -Y-mini2.0---
10.
 
Nikon D500Ystereo / monoYYmini3.0YYY
11.
 
Nikon D7100Ystereo / monoYYmini2.0---
12.
 
Nikon D3200Ymono / monoY-mini2.0---
13.
 
Nikon D5100Ymono / monoY-mini2.0---
14.
 
Nikon D3000Y- / ----2.0---
15.
 
Nikon D5000Ymono / mono--mini2.0---
16.
 
Nikon D40Y- / ----2.0---
17.
 
Sony RX10 IIYstereo / monoYYmicro2.0YY-

It is notable that the 7D 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 7D II (unlike the D3100) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Travel and landscape photographers will find it useful that the 7D Mark II has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the 7D Mark II and the D3100 have been discontinued, but can regularly be found used on ebay. The D3100 was replaced by the Nikon D3200, while the 7D Mark II does not have a direct successor. Further information on the features and operation of the 7D Mark II and D3100 can be found, respectively, in the Canon 7D II Manual (free pdf) or the online Nikon D3100 Manual.

Review summary

So how do things add up? Is there a clear favorite between the Canon 7D II and the Nikon D3100? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

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Reasons to prefer the Canon EOS 7D Mark II:

  • More detail: Offers more megapixels (20 vs 14.2MP) with a 19% higher linear resolution.
  • Better video: Provides higher movie framerates (1080/60p versus 1080/24p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • 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 (0.63x 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 (1040k vs 230k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (10 vs 3 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Can take more shots (670 versus 550) on a single battery charge.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • 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.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More modern: Reflects 4 years of technical progress since the D3100 launch.

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Advantages of the Nikon D3100:

  • More compact: Is smaller (124x96mm vs 149x112mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 405g or 45 percent) and is thus easier to take along.
  • More affordable: Was introduced into a lower priced category (67 percent cheaper at launch).
  • More heavily discounted: Has been around for much longer (launched in August 2010).

If the number of relative strengths (bullet points above) is taken as a guide, the 7D Mark II is the clear winner of the match-up (20 : 4 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 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.

7D Mark II 20:04 D3100

How about other alternatives? Do the specifications of the Canon 7D 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 comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the 7D Mark II or the D3100 perform in practice. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

Expert reviews

This is where reviews by experts come in. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 7D II4.5/5+3.5/584/1004/54.5/5 Sep 2014 1,799ebay.com
2.
 
Nikon D31005/5+ +..72/1004.5/54.5/5 Aug 2010 599ebay.com
3.
 
Canon 6D Mark II4/5+4/580/1004.5/54/5 Jun 2017 1,999 amazon.com
4.
 
Canon 80D4/5+ +4.5/584/1004.5/54.5/5 Feb 2016 1,199ebay.com
5.
 
Canon G3 X3.5/5+....4.5/54/5 Jun 2015 999 amazon.com
6.
 
Canon 70D5/5+ +..83/1004.5/55/5 Jul 2013 1,199ebay.com
7.
 
Canon 6D5/5+ +..83/1004.5/54.5/5 Sep 2012 2,099ebay.com
8.
 
Canon 60D5/5+..79/1004/54.5/5 Aug 2010 1,399ebay.com
9.
 
Canon 7D5/5+ +..84/1004.5/54.5/5 Sep 2009 1,699ebay.com
10.
 
Nikon D5005/5+ +4.7/591/1004.5/55/5 Jan 2016 1,999 amazon.com
11.
 
Nikon D71005/5+ +..85/1004.5/54.5/5 Feb 2013 1,199ebay.com
12.
 
Nikon D32005/5+ +..73/1004.5/54.5/5 Apr 2012 599ebay.com
13.
 
Nikon D51005/5+ +..76/1004.5/54.5/5 Apr 2011 749ebay.com
14.
 
Nikon D3000..+..72/1004/54.5/5 Jul 2009 599ebay.com
15.
 
Nikon D5000..+ +..75/1004/54.5/5 Apr 2009 749ebay.com
16.
 
Nikon D40..81/100..+ +o4.5/5 Nov 2006 499ebay.com
17.
 
Sony RX10 II5/5+ +..82/1004.5/54/5 Jun 2015 1,299ebay.com
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Canon 7D 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 Specifications
    Camera Model Canon 7D 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 2014 August 2010
    Launch Price USD 1,799 USD 599
    Sensor Specs Canon 7D II Nikon D3100
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor APS-C Sensor
    Sensor Size 22.4 x 15.0 mm 23.1 x 15.4 mm
    Sensor Area 336 mm2 355.74 mm2
    Sensor Diagonal 27 mm 27.8 mm
    Crop Factor 1.6x 1.5x
    Sensor Resolution 20 Megapixels 14.2 Megapixels
    Image Resolution 5472 x 3648 pixels 4608 x 3072 pixels
    Pixel Pitch 4.10 μm 5.01 μm
    Pixel Density 5.94 MP/cm2 3.98 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 1080/60p Video 1080/24p Video
    ISO Setting 100 - 16,000 ISO 100 - 3,200 ISO
    ISO Boost 100 - 51,200 ISO 100 - 12,800 ISO
    Image Processor DIGIC 6 (Dual) EXPEED 2
    DXO Sensor Quality (score) 70 67
    DXO Color Depth (bits) 22.4 22.5
    DXO Dynamic Range (EV) 11.8 11.3
    DXO Low Light (ISO) 1082 919
    Screen Specs Canon 7D II Nikon D3100
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 100% 95%
    Viewfinder Magnification 0.63x 0.53x
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1040k dots 230k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Canon 7D II Nikon D3100
    Focus System Phase-detect AF Phase-detect AF
    Continuous Shooting 10 shutter flaps/s 3 shutter flaps/s
    Shutter Life Expectancy200 000 actuations100 000 actuations
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium CF or SDXC cards SDXC cards
    Single or Dual Card Slots Dual card slots Single card slot
    UHS card support UHS-I no
    Connectivity Specs Canon 7D II Nikon D3100
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 3.0 USB 2.0
    HDMI Port mini HDMI mini HDMI
    Microphone Port External MIC port no MIC socket
    Headphone Socket Headphone port no Headphone port
    Wifi Support no Wifi no Wifi
    Geotagging GPS built-in no internal GPS
    Body Specs Canon 7D II Nikon D3100
    Environmental SealingWeathersealed bodynot weather sealed
    Battery Type LP-E6N EN-EL14
    Battery Life (CIPA)670 shots per charge550 shots per charge
    Body Dimensions 149 x 112 x 78 mm
    (5.9 x 4.4 x 3.1 in)
    124 x 96 x 75 mm
    (4.9 x 3.8 x 3.0 in)
    Camera Weight 910 g (32.1 oz) 505 g (17.8 oz)
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