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Canon 800D versus Nikon D3100

The Canon EOS 800D (called Canon T7i in some regions) and the Nikon D3100 are two digital cameras that were revealed to the public, respectively, in February 2017 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 24 megapixel, whereas the Nikon provides 14.2 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Canon 800D vs Nikon D3100

An illustration of the physical size and weight of the Canon 800D and the Nikon D3100 is provided 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 measures are rounded to the nearest millimeter. You can also toggle the display to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left – the 800D – represents 100 percent across all the size and weight measures).

Compare Canon 800D vs Nikon D3100
Compare 800D versus D3100 top
Compare 800D and 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 (9 percent) than the Canon 800D. Moreover, the D3100 is markedly lighter (5 percent) than the 800D. In this context, it is worth noting that neither the 800D nor the D3100 are weather-sealed.

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 find an overview of optics for the two cameras in the Canon EF Lens Catalog (800D) and the Nikon Lens Catalog (D3100).

Concerning battery life, the 800D gets 600 shots out of its LP-E17 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 want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Canon 800D» 5.2 in 3.9 in 3.0 in 18.8 oz 600 n Feb 2017 749 i i Canon 800D
Nikon D3100« 4.9 in 3.8 in 3.0 in 17.8 oz 550 n Aug 2010 599- i Nikon D3100
Canon 2000D« » 5.1 in 4.0 in 3.1 in 16.8 oz 500 n Feb 2018 449 i i Canon 2000D
Canon M50« » 4.6 in 3.5 in 2.3 in 13.8 oz 235 n Feb 2018 779 i i Canon M50
Canon 77D« » 5.2 in 3.9 in 3.0 in 19.0 oz 600 n Feb 2017 899 i i Canon 77D
Canon 200D« » 4.8 in 3.7 in 2.8 in 16.0 oz 650 n Jun 2017 549 i i Canon 200D
Canon M6« » 4.4 in 2.7 in 1.8 in 13.8 oz 295 n Feb 2017 779 i i Canon M6
Canon 1300D« » 5.1 in 4.0 in 3.1 in 17.1 oz 500 n Mar 2016 449- i Canon 1300D
Canon G7 X Mark II« » 4.2 in 2.4 in 1.7 in 11.3 oz 265 n Feb 2016 699 i i Canon G7 X Mark II
Canon 750D« » 5.2 in 4.0 in 3.1 in 19.6 oz 440 n Feb 2015 749- i Canon 750D
Canon 760D« » 5.2 in 4.0 in 3.1 in 19.9 oz 440 n Feb 2015 849- i Canon 760D
Nikon D5600« » 4.9 in 3.8 in 2.8 in 16.4 oz 970 n Nov 2016 699 i i Nikon D5600
Nikon D3200« » 4.9 in 3.8 in 3.0 in 17.8 oz 540 n Apr 2012 599- i Nikon D3200
Nikon D5100« » 5.0 in 3.8 in 3.1 in 19.8 oz 660 n Apr 2011 749- i Nikon D5100
Nikon D7000« » 5.2 in 4.1 in 3.0 in 27.5 oz 1050 Y Sep 2010 1,499- i Nikon D7000
Nikon D3000« » 5.0 in 3.8 in 2.5 in 18.9 oz 500 n Jul 2009 599- i Nikon D3000
Nikon D5000« » 5.0 in 4.1 in 3.1 in 20.8 oz 510 n Apr 2009 749- i Nikon D5000

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 D3100 was launched at a somewhat lower price (by 20 percent) than the 800D, which makes it more attractive for photographers on a tight budget. 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: Canon 800D vs Nikon D3100

The size of the sensor inside a digital camera is one of the key determinants 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 tend to be more expensive and lead to bigger and heavier cameras 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 7 percent bigger. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.6 (800D) and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

In terms of underlying technology, both cameras are build around CMOS sensors.

Canon 800D and Nikon D3100 sensor measures

Despite having a smaller sensor, the Canon 800D offers a higher resolution of 24 megapixel, compared with 14.2 MP of the Nikon D3100. This megapixel advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.72μm versus 5.01μm for the D3100). However, it should be noted that the 800D is much more recent (by 6 years and 5 months) than the D3100, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.

800D versus D3100 MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
Canon 800D» APS-C 24.0 6000 40001080/60p----Canon 800D
Nikon D3100« APS-C 14.2 4608 30721080/24p22.511.391967Nikon D3100
Canon 2000D« » APS-C 24.0 6000 40001080/30p22.611.9100971Canon 2000D
Canon M50« » APS-C 24.0 6000 40004K/24p----Canon M50
Canon 77D« » APS-C 24.0 6000 40001080/60p23.613.397178Canon 77D
Canon 200D« » APS-C 24.0 6000 40001080/60p23.613.4104179Canon 200D
Canon M6« » APS-C 24.0 6000 40001080/60p----Canon M6
Canon 1300D« » APS-C 17.9 5184 34561080/30p----Canon 1300D
Canon G7 X Mark II« » 1-inch 20.0 5472 36481080/60p----Canon G7 X Mark II
Canon 750D« » APS-C 24.0 6000 40001080/60p22.712.091971Canon 750D
Canon 760D« » APS-C 24.0 6000 40001080/30p22.612.091570Canon 760D
Nikon D5600« » APS-C 24.0 6000 40001080/60p24.114.0130684Nikon D5600
Nikon D3200« » APS-C 24.1 6016 40001080/30p24.113.2113181Nikon D3200
Nikon D5100« » APS-C 16.1 4928 32641080/30p23.513.6118380Nikon D5100
Nikon D7000« » APS-C 16.1 4928 326410800/24p23.513.9116780Nikon D7000
Nikon D3000« » APS-C 10.0 3872 2592-22.311.156362Nikon D3000
Nikon D5000« » APS-C 12.2 4288 2848720/24p22.712.586872Nikon D5000

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the 800D 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: Canon 800D vs Nikon D3100

Beyond body and sensor, cameras can and do differ across a range of features. The 800D 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 table below summarizes some of the other core capabilities of the Canon 800D and Nikon D3100 in connection with corresponding information for a sample of similar cameras. The full specs-sheets can be found in the camera manual or in the dpreview camera hub.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec)
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Camera
Model
Canon 800D»optical n 3.0 1040 swivel Y 4000 6.0 Y n Canon 800D
Nikon D3100«optical n 3.0 230 fixed n 4000 3.0 Y n Nikon D3100
Canon 2000D« »optical n 3.0 920 fixed n 4000 3.0 Y n Canon 2000D
Canon M50« »2360 n 3.0 1040 swivel Y 4000 10.0 Y n Canon M50
Canon 77D« »optical Y 3.0 1040 swivel Y 4000 6.0 Y n Canon 77D
Canon 200D« »optical n 3.0 1040 swivel Y 4000 5.0 Y n Canon 200D
Canon M6« »- n 3.0 1040 tilting Y 4000 9.0 Y n Canon M6
Canon 1300D« »optical n 3.0 920 fixed n 4000 3.0 Y n Canon 1300D
Canon G7 X Mark II« »- n 3.0 1040 tilting Y 2000 8.0 Y Y Canon G7 X Mark II
Canon 750D« »optical n 3.0 1040 swivel Y 4000 5.0 Y n Canon 750D
Canon 760D« »optical Y 3.0 1040 swivel Y 4000 5.0 Y n Canon 760D
Nikon D5600« »optical n 3.2 1037 swivel Y 4000 5.0 Y n Nikon D5600
Nikon D3200« »optical n 3.0 921 fixed n 4000 4.0 Y n Nikon D3200
Nikon D5100« »optical n 3.0 921 swivel n 4000 4.0 Y n Nikon D5100
Nikon D7000« »optical Y 3.0 921 fixed n 8000 6.0 Y n Nikon D7000
Nikon D3000« »optical n 3.0 230 fixed n 4000 3.0 Y n Nikon D3000
Nikon D5000« »optical n 2.7 230 full-flex n 4000 4.0 Y n Nikon D5000

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The 800D has a touchscreen, while the D3100 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

Both the 800D and the D3100 write their imaging data to SDXC cards.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
Canon 800D»YstereomonoY-mini2.0YYYCanon 800D
Nikon D3100«Ymonomono--mini2.0---Nikon D3100
Canon 2000D« »Ymonomono--mini2.0YY-Canon 2000D
Canon M50« »YstereomonoY-micro2.0YYYCanon M50
Canon 77D« »YstereomonoY-mini2.0YYYCanon 77D
Canon 200D« »YstereomonoY-mini2.0YYYCanon 200D
Canon M6« »YstereomonoY-mini2.0YYYCanon M6
Canon 1300D« »Ymonomono--mini2.0YY-Canon 1300D
Canon G7 X Mark II« »-stereomono--micro2.0YY-Canon G7 X Mark II
Canon 750D« »YstereomonoY-mini2.0YY-Canon 750D
Canon 760D« »YstereomonoY-mini2.0YY-Canon 760D
Nikon D5600« »YstereomonoY-mini2.0YYYNikon D5600
Nikon D3200« »YmonomonoY-mini2.0---Nikon D3200
Nikon D5100« »YmonomonoY-mini2.0---Nikon D5100
Nikon D7000« »YmonomonoY-mini2.0---Nikon D7000
Nikon D3000« »Y-----2.0---Nikon D3000
Nikon D5000« »Ymonomono--mini2.0---Nikon D5000

The 800D is a current model that online retailers, such as amazon, will have in stock. In contrast, the D3100 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the D3100 was succeeded by the Nikon D3200.

Review summary: Canon 800D vs Nikon D3100

So what is the bottom line? Is there a clear favorite between the Canon 800D and the Nikon D3100? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Canon EOS 800D:

  • More detail: Offers more megapixels (24 vs 14.2MP) with a 30% higher linear resolution.
  • Better video: Provides higher movie framerates (1080/60p versus 1080/24p).
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
  • More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster burst: Shoots at higher frequency (6 vs 3 flaps/sec) to capture the decisive moment.
  • Easier file upload: Has wifi build in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • More modern: Reflects 6 years and 5 months of technical progress since the D3100 launch.

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Advantages of the Nikon D3100:

  • More affordable: Was released into a lower priced segment (20 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 800D is the clear winner of the match-up (11 : 2 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.

800D 11:02 D3100

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the 800D or the D3100. 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. This is why hands-on reviews by experts are important. The adjacent table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The full reviews are available by clicking on the site logo in the table header.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Canon 800D»-80/1004.5/54/54/5 Feb 2017 749 i i Canon 800D
Nikon D3100«HiRec72/1004.5/55/54.5/5 Aug 2010 599- i Nikon D3100
Canon 2000D« »rev-3.5/5-3.5/5 Feb 2018 449 i i Canon 2000D
Canon M50« »Rec79/100--3.5/5 Feb 2018 779 i i Canon M50
Canon 77D« »-82/1004.5/54.5/54/5 Feb 2017 899 i i Canon 77D
Canon 200D« »HiRec78/1004.5/54.5/54.5/5 Jun 2017 549 i i Canon 200D
Canon M6« »-80/1004/54.5/54/5 Feb 2017 779 i i Canon M6
Canon 1300D« »rev73/1004/53.5/54/5 Mar 2016 449- i Canon 1300D
Canon G7 X Mark II« »HiRec81/1004.5/54/54.5/5 Feb 2016 699 i i Canon G7 X Mark II
Canon 750D« »-75/1004.5/54.5/54.5/5 Feb 2015 749- i Canon 750D
Canon 760D« »Rec77/1004.5/54.5/54.5/5 Feb 2015 849- i Canon 760D
Nikon D5600« »-79/1004.5/54.5/54/5 Nov 2016 699 i i Nikon D5600
Nikon D3200« »HiRec73/1004.5/54.5/54.5/5 Apr 2012 599- i Nikon D3200
Nikon D5100« »HiRec76/1004.5/55/54.5/5 Apr 2011 749- i Nikon D5100
Nikon D7000« »-80/1004.5/55/54.5/5 Sep 2010 1,499- i Nikon D7000
Nikon D3000« »Rec72/1004/53.5/54.5/5 Jul 2009 599- i Nikon D3000
Nikon D5000« »HiRec75/1004/55/54.5/5 Apr 2009 749- i Nikon D5000

The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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.

 

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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting. If you do not see the camera that you are looking for, please send me an email, and I will try to add information on that model to the database.

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