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Nikon D3100 vs Canon T3

The Nikon D3100 and the Canon EOS Rebel T3 (labelled Canon 1100D in some countries) are two digital cameras that were officially introduced, respectively, in August 2010 and February 2011. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Nikon has a resolution of 14.2 megapixels, whereas the Canon provides 12.2 MP.

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

Headline Specifications
Nikon D3100
versus
Canon T3
Nikon D3100   Canon T3
Digital single lens reflex Digital single lens reflex
Nikon F mount lenses Canon EF mount lenses
14.2 MP – APS-C sensor 12.2 MP – APS-C sensor
1080/24p Video 720/30p Video
ISO 100-3,200 (100 - 12,800) ISO 100-6,400
Optical viewfinder Optical viewfinder
3.0" LCD – 230k dots 2.7" LCD – 230k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
3 shutter flaps per second 3 shutter flaps per second
550 shots per battery charge700 shots per battery charge
124 x 96 x 75 mm, 505 g 130 x 100 x 78 mm, 495 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D3100 and the Canon EOS Rebel T3? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

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Body comparison

The physical size and weight of the Nikon D3100 and the Canon T3 are illustrated in the side-by-side display below. 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 T3 is only available in black.

Size Nikon D3100 vs Canon T3
Compare D3100 versus T3 top
Comparison D3100 or T3 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon T3 is notably larger (9 percent) than the Nikon D3100. However, the T3 is slightly lighter (2 percent) than the D3100. In this context, it is worth noting that neither the D3100 nor the T3 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 compare the optics available for the two cameras in the Nikon Lens Catalog (D3100) and the Canon EF Lens Catalog (T3).

Concerning battery life, the D3100 gets 550 shots out of its Nikon EN-EL14 battery, while the T3 can take 700 images on a single charge of its Canon LP-E10 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, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons 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.
 
Nikon D3100 124 mm 96 mm 75 mm 505 g 550 n Aug 2010 599ebay.com
2.
 
Canon T3 130 mm 100 mm 78 mm 495 g 700 n Feb 2011 449ebay.com
3.
 
Canon T100 129 mm 102 mm 77 mm 436 g 500 n Feb 2018 399 amazon.com
4.
 
Canon T6 129 mm 101 mm 78 mm 485 g 500 n Mar 2016 449ebay.com
5.
 
Canon T5 130 mm 100 mm 78 mm 480 g 500 n Feb 2014 449ebay.com
6.
 
Canon G1 X 117 mm 81 mm 65 mm 534 g 250 n Jan 2012 799ebay.com
7.
 
Canon XS 126 mm 98 mm 65 mm 502 g 500 n Jun 2008 449ebay.com
8.
 
Nikon D3200 125 mm 96 mm 77 mm 505 g 540 n Apr 2012 599ebay.com
9.
 
Nikon D5100 128 mm 97 mm 79 mm 560 g 660 n Apr 2011 749ebay.com
10.
 
Nikon D7000 132 mm 105 mm 77 mm 780 g 1050 Y Sep 2010 1,499ebay.com
11.
 
Nikon D3000 126 mm 97 mm 64 mm 536 g 500 n Jul 2009 599ebay.com
12.
 
Nikon D5000 127 mm 104 mm 80 mm 590 g 510 n Apr 2009 749ebay.com
13.
 
Nikon D60 126 mm 94 mm 64 mm 522 g 500 n Jan 2008 629ebay.com
14.
 
Nikon D40X 124 mm 94 mm 64 mm 522 g 520 n Mar 2007 729ebay.com
15.
 
Nikon D40 124 mm 94 mm 64 mm 522 g 470 n Nov 2006 499ebay.com
16.
 
Sony NEX-5N 111 mm 59 mm 38 mm 269 g 460 n Aug 2011 699ebay.com
17.
 
Sony NEX-C3 110 mm 60 mm 33 mm 225 g 400 n Jun 2011 599ebay.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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The T3 was launched at a somewhat lower price (by 25 percent) than the D3100, 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.

Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants 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. 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 T3 is 9 percent smaller. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.5 (D3100) and 1.6. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Nikon D3100 and Canon T3 sensor measures

With 14.2MP, the D3100 offers a higher resolution than the T3 (12.2MP), but the D3100 has smaller individual pixels (pixel pitch of 5.01μm versus 5.15μm for the T3). Moreover, the T3 is a somewhat more recent model (by 5 months) than the D3100, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels.

The resolution advantage of the Nikon D3100 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D3100 for good quality output (200 dots per inch) amounts to 23 x 15.4 inches or 58.5 x 39 cm, for very good quality (250 dpi) 18.4 x 12.3 inches or 46.8 x 31.2 cm, and for excellent quality (300 dpi) 15.4 x 10.2 inches or 39 x 26 cm. The corresponding values for the Canon T3 are 21.4 x 14.2 inches or 54.3 x 36.2 cm for good quality, 17.1 x 11.4 inches or 43.4 x 28.9 cm for very good quality, and 14.2 x 9.5 inches or 36.2 x 24.1 cm for excellent quality prints.

The Nikon D3100 has a native sensitivity range from ISO 100 to ISO 3200, which can be extended to ISO 100-12800. The corresponding ISO settings for the Canon EOS Rebel T3 are ISO 100 to ISO 6400 (no boost).

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

D3100 versus T3 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. Of the two cameras under review, the D3100 has a notably higher overall DXO score than the T3 (overall score 5 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.6 bits higher color depth, 0.3 EV in additional dynamic range, and 0.3 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.

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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.
 
Nikon D3100 APS-C 14.2 4608 30721080/24p22.511.391967
2.
 
Canon T3 APS-C 12.2 4272 2848720/30p21.911.075562
3.
 
Canon T100 APS-C 17.9 5184 34561080/30p21.911.469563
4.
 
Canon T6 APS-C 17.9 5184 34561080/30p22.011.778166
5.
 
Canon T5 APS-C 17.9 5184 34561080/30p21.911.372463
6.
 
Canon G1 X 1.5-inch 14.2 4352 32641080/24p21.710.864460
7.
 
Canon XS APS-C 10.1 3888 2592none22.010.971962
8.
 
Nikon D3200 APS-C 24.1 6016 40001080/30p24.113.2113181
9.
 
Nikon D5100 APS-C 16.1 4928 32641080/30p23.513.6118380
10.
 
Nikon D7000 APS-C 16.1 4928 32641080/24p23.513.9116780
11.
 
Nikon D3000 APS-C 10.0 3872 2592none22.311.156362
12.
 
Nikon D5000 APS-C 12.2 4288 2848720/24p22.712.586872
13.
 
Nikon D60 APS-C 10.0 3872 2592none22.511.456265
14.
 
Nikon D40X APS-C 10.0 3872 2592none22.411.451663
15.
 
Nikon D40 APS-C 6.0 3008 2000none21.011.056156
16.
 
Sony NEX-5N APS-C 16.0 4912 32641080/60i23.612.7107977
17.
 
Sony NEX-C3 APS-C 16.0 4912 3264720/30p22.712.2108373
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Many modern cameras are not only capable of taking still images, but also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the D3100 provides a higher video resolution than the T3. It can shoot video footage at 1080/24p, while the Canon is limited to 720/30p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The D3100 and the T3 are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinders of both cameras offer the same field of view (95%), but the viewfinder of the D3100 has a higher magnification than the one of the T3 (0.53x vs 0.50x), 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 Nikon D3100 and Canon T3 in connection with corresponding information for a sample of similar 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.
 
Nikon D3100optical n3.0 / 230 fixed n 1/4000s 3.0/s Y n
2.
 
Canon T3optical n2.7 / 230 fixed n 1/4000s 3.0/s Y n
3.
 
Canon T100optical n2.7 / 230 fixed n 1/4000s 3.0/s Y n
4.
 
Canon T6optical n3.0 / 920 fixed n 1/4000s 3.0/s Y n
5.
 
Canon T5optical n3.0 / 460 fixed n 1/4000s 3.0/s Y n
6.
 
Canon G1 Xoptical n3.0 / 922 swivel n 1/4000s 1.9/s Y Y
7.
 
Canon XSoptical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
8.
 
Nikon D3200optical n3.0 / 921 fixed n 1/4000s 4.0/s Y n
9.
 
Nikon D5100optical n3.0 / 921 swivel n 1/4000s 4.0/s Y n
10.
 
Nikon D7000optical Y3.0 / 921 fixed n 1/8000s 6.0/s Y n
11.
 
Nikon D3000optical n3.0 / 230 fixed n 1/4000s 3.0/s Y n
12.
 
Nikon D5000optical n2.7 / 230 full-flex n 1/4000s 4.0/s Y n
13.
 
Nikon D60optical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
14.
 
Nikon D40Xoptical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
15.
 
Nikon D40optical n2.5 / 230 fixed n 1/4000s 2.5/s Y n
16.
 
Sony NEX-5Noptional n3.0 / 920 tilting Y 1/4000s 10.0/s n n
17.
 
Sony NEX-C3optional n3.0 / 920 tilting n 1/4000s 5.5/s n n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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Concerning the storage of imaging data, both the D3100 and the T3 write their files to SDXC cards.

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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 Nikon D3100 and Canon EOS Rebel T3 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.
 
Nikon D3100Ymono / mono--mini2.0---
2.
 
Canon T3Ystereo / mono--mini2.0---
3.
 
Canon T100Ymono / mono--mini2.0YY-
4.
 
Canon T6Ymono / mono--mini2.0YY-
5.
 
Canon T5Ymono / mono--mini2.0---
6.
 
Canon G1 XYstereo / mono--mini2.0---
7.
 
Canon XSY- / ----2.0---
8.
 
Nikon D3200Ymono / monoY-mini2.0---
9.
 
Nikon D5100Ymono / monoY-mini2.0---
10.
 
Nikon D7000Ymono / monoY-mini2.0---
11.
 
Nikon D3000Y- / ----2.0---
12.
 
Nikon D5000Ymono / mono--mini2.0---
13.
 
Nikon D60Y- / ----2.0---
14.
 
Nikon D40XY- / ----2.0---
15.
 
Nikon D40Y- / ----2.0---
16.
 
Sony NEX-5NYstereo / mono--mini2.0---
17.
 
Sony NEX-C3Ystereo / mono--mini2.0---
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Both the D3100 and the T3 have been discontinued, but can regularly be found used on ebay. The D3100 was replaced by the Nikon D3200, while the T3 was followed by the Canon T5. Further information on the features and operation of the D3100 and T3 can be found, respectively, in the Nikon D3100 Manual (free pdf) or the online Canon T3 Manual.

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Review summary

So how do things add up? Is there a clear favorite between the Nikon D3100 and the Canon T3? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

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Advantages of the Nikon D3100:

  • More detail: Offers more megapixels (14.2 vs 12.2MP) with a 8% higher linear resolution.
  • Better image quality: Scores markedly higher (5 points) in the DXO overall assessment.
  • Better video: Provides higher definition movie capture (1080/24p vs 720/30p).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.53x vs 0.50x).
  • Larger screen: Has a bigger rear LCD (3.0" vs 2.7") for image review and settings control.
  • More heavily discounted: Has been on the market for longer (launched in August 2010).

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Reasons to prefer the Canon EOS Rebel T3:

  • Longer lasting: Gets more shots (700 versus 550) out of a single battery charge.
  • More affordable: Was released into a lower priced segment (25 percent cheaper at launch).
  • More modern: Was introduced somewhat (5 months) more recently.

If the count of relative strengths (bullet points above) is taken as a measure, the D3100 emerges as the winner of the contest (6 : 3 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 wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

D3100 06:03 T3

How about other alternatives? Do the specifications of the Nikon D3100 and the Canon T3 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 technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the D3100 and the T3 in practical situations. 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
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D31005/5+ +..72/1004.5/54.5/5 Aug 2010 599ebay.com
2.
 
Canon T3..80/100..69/1004/54.5/5 Feb 2011 449ebay.com
3.
 
Canon T100..o3/5..3.5/53.5/5 Feb 2018 399 amazon.com
4.
 
Canon T64/5o4/573/1004/54/5 Mar 2016 449ebay.com
5.
 
Canon T53/5+....4/54.5/5 Feb 2014 449ebay.com
6.
 
Canon G1 X5/5+..76/1004/54.5/5 Jan 2012 799ebay.com
7.
 
Canon XS..82/100..+ +3.5/54.5/5 Jun 2008 449ebay.com
8.
 
Nikon D32005/5+ +..73/1004.5/54.5/5 Apr 2012 599ebay.com
9.
 
Nikon D51005/5+ +..76/1004.5/54.5/5 Apr 2011 749ebay.com
10.
 
Nikon D70004/5....80/1004.5/54.5/5 Sep 2010 1,499ebay.com
11.
 
Nikon D3000..+..72/1004/54.5/5 Jul 2009 599ebay.com
12.
 
Nikon D5000..+ +..75/1004/54.5/5 Apr 2009 749ebay.com
13.
 
Nikon D60..80/100..+ +4/54.5/5 Jan 2008 629ebay.com
14.
 
Nikon D40X..79/100..+ +4/54/5 Mar 2007 729ebay.com
15.
 
Nikon D40..81/100..+ +o4.5/5 Nov 2006 499ebay.com
16.
 
Sony NEX-5N3/5+ +..79/1004.5/54.5/5 Aug 2011 699ebay.com
17.
 
Sony NEX-C33/5+ +..74/1004.5/54/5 Jun 2011 599ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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The review scores listed above should be treated 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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

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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 make your choice using the following search menu. 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: Nikon D3100 vs Canon T3

    Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

    Camera Specifications
    Camera Model Nikon D3100 Canon T3
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Nikon F mount lenses Canon EF mount lenses
    Launch Date August 2010 February 2011
    Launch Price USD 599 USD 449
    Sensor Specs Nikon D3100 Canon T3
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor APS-C Sensor
    Sensor Size 23.1 x 15.4 mm 22.0 x 14.7 mm
    Sensor Area 355.74 mm2 323.4 mm2
    Sensor Diagonal 27.8 mm 26.5 mm
    Crop Factor 1.5x 1.6x
    Sensor Resolution 14.2 Megapixels 12.2 Megapixels
    Image Resolution 4608 x 3072 pixels 4272 x 2848 pixels
    Pixel Pitch 5.01 μm 5.15 μm
    Pixel Density 3.98 MP/cm2 3.76 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 1080/24p Video 720/30p Video
    ISO Setting 100 - 3,200 ISO 100 - 6,400 ISO
    ISO Boost 100 - 12,800 ISO no Enhancement
    Image Processor EXPEED 2 DIGIC 4
    DXO Sensor Quality (score) 67 62
    DXO Color Depth (bits) 22.5 21.9
    DXO Dynamic Range (EV) 11.3 11.0
    DXO Low Light (ISO) 919 755
    Screen Specs Nikon D3100 Canon T3
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 95% 95%
    Viewfinder Magnification 0.53x 0.50x
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 2.7inch
    LCD Resolution 230k dots 230k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Nikon D3100 Canon T3
    Focus System Phase-detect AF Phase-detect AF
    Continuous Shooting 3 shutter flaps/s 3 shutter flaps/s
    Shutter Life Expectancy100 000 actuations100 000 actuations
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium SDXC cards SDXC cards
    Single or Dual Card Slots Single card slot Single card slot
    UHS card support no no
    Connectivity Specs Nikon D3100 Canon T3
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI mini HDMI
    Wifi Support no Wifi no Wifi
    Body Specs Nikon D3100 Canon T3
    Battery Type Nikon EN-EL14 Canon LP-E10
    Battery Life (CIPA)550 shots per charge700 shots per charge
    Body Dimensions 124 x 96 x 75 mm
    (4.9 x 3.8 x 3.0 in)
    130 x 100 x 78 mm
    (5.1 x 3.9 x 3.1 in)
    Camera Weight 505 g (17.8 oz) 495 g (17.5 oz)
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