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Canon 550D vs Nikon D3100

The Canon EOS 550D (called Canon T2i in some regions) and the Nikon D3100 are two digital cameras that were revealed to the public, respectively, in February 2010 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 17.9 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 550D
versus
Nikon D3100
Canon 550D   Nikon D3100
Digital single lens reflex Digital single lens reflex
Canon EF mount lenses Nikon F mount lenses
17.9 MP, APS-C Sensor 14.2 MP, APS-C Sensor
1080/30p Video 1080/24p Video
ISO 100-6,400 (100 - 12,800) 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)
3.7 shutter flaps per second 3 shutter flaps per second
440 shots per battery charge550 shots per battery charge
129 x 98 x 62 mm, 530 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 550D 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 550D 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 550D is only available in black.

Size Canon 550D vs Nikon D3100
Compare 550D versus D3100 top
Comparison 550D 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 (6 percent) than the Canon 550D. Moreover, the D3100 is markedly lighter (5 percent) than the 550D. In this context, it is worth noting that neither the 550D 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 compare the optics available for the two cameras in the Canon EF Lens Catalog (550D) and the Nikon Lens Catalog (D3100).

Concerning battery life, the 550D gets 440 shots out of its LP-E8 battery, while the D3100 can take 550 images on a single charge of its EN-EL14 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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 550D 129 mm 98 mm 62 mm 530 g 440 n Feb 2010 699 i
2.
 
Nikon D3100 124 mm 96 mm 75 mm 505 g 550 n Aug 2010 599 i
3.
 
Canon 4000D 129 mm 102 mm 77 mm 436 g 500 n Feb 2018 399 i
4.
 
Canon 750D 132 mm 101 mm 78 mm 555 g 440 n Feb 2015 749 i
5.
 
Canon 760D 132 mm 101 mm 78 mm 565 g 440 n Feb 2015 649 i
6.
 
Canon 1200D 130 mm 100 mm 78 mm 480 g 500 n Feb 2014 449 i
7.
 
Canon 700D 133 mm 100 mm 79 mm 580 g 440 n Mar 2013 649 i
8.
 
Canon 650D 133 mm 100 mm 79 mm 575 g 440 n Jun 2012 849 i
9.
 
Canon 600D 133 mm 100 mm 80 mm 570 g 440 n Feb 2011 599 i
10.
 
Canon 1100D 130 mm 100 mm 78 mm 495 g 700 n Feb 2011 449 i
11.
 
Canon 500D 129 mm 98 mm 62 mm 520 g 400 n Mar 2009 799 i
12.
 
Nikon D3200 125 mm 96 mm 77 mm 505 g 540 n Apr 2012 599 i
13.
 
Nikon D5100 128 mm 97 mm 79 mm 560 g 660 n Apr 2011 749 i
14.
 
Nikon D7000 132 mm 105 mm 77 mm 780 g 1050 Y Sep 2010 1,499 i
15.
 
Nikon D3000 126 mm 97 mm 64 mm 536 g 500 n Jul 2009 599 i
16.
 
Nikon D5000 127 mm 104 mm 80 mm 590 g 510 n Apr 2009 749 i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

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 14 percent) than the 550D, 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

The size of the imaging sensor is a crucial determinant 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 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 7 percent bigger. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.6 (550D) and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon 550D and Nikon D3100 sensor measures

Despite having a smaller sensor, the Canon 550D offers a higher resolution of 17.9 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 4.31μm versus 5.01μm for the D3100). Moreover, it should be noted that the D3100 is a somewhat more recent model (by 6 months) than the 550D, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.

The resolution advantage of the Canon 550D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 550D for good quality output (200 dots per inch) amounts to 25.9 x 17.3 inches or 65.8 x 43.9 cm, for very good quality (250 dpi) 20.7 x 13.8 inches or 52.7 x 35.1 cm, and for excellent quality (300 dpi) 17.3 x 11.5 inches or 43.9 x 29.3 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 Canon EOS 550D has a native sensitivity range from ISO 100 to ISO 6400, which can be extended to ISO 100-12800. 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.

550D versus D3100 MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. 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
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon 550D APS-C 17.9 5184 34561080/30p22.111.5784 66
2.
 
Nikon D3100 APS-C 14.2 4608 30721080/24p22.511.3919 67
3.
 
Canon 4000D APS-C 17.9 5184 34561080/30p21.911.4695 63
4.
 
Canon 750D APS-C 24.0 6000 40001080/30p22.712.0919 71
5.
 
Canon 760D APS-C 24.0 6000 40001080/30p22.612.0915 70
6.
 
Canon 1200D APS-C 17.9 5184 34561080/30p21.911.3724 63
7.
 
Canon 700D APS-C 17.9 5184 34561080/30p21.711.2681 61
8.
 
Canon 650D APS-C 17.9 5184 34561080/30p21.711.2722 62
9.
 
Canon 600D APS-C 17.9 5184 34561080/30p22.111.5793 65
10.
 
Canon 1100D APS-C 12.2 4272 2848720/30p21.911.0755 62
11.
 
Canon 500D APS-C 15.1 4752 31681080/20p21.711.5663 63
12.
 
Nikon D3200 APS-C 24.1 6016 40001080/30p24.113.21131 81
13.
 
Nikon D5100 APS-C 16.1 4928 32641080/30p23.513.61183 80
14.
 
Nikon D7000 APS-C 16.1 4928 326410800/24p23.513.91167 80
15.
 
Nikon D3000 APS-C 10.0 3872 2592none22.311.1563 62
16.
 
Nikon D5000 APS-C 12.2 4288 2848720/24p22.712.5868 72

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the 550D 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

Apart from body and sensor, cameras can and do differ across a range of features. The 550D 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 viewfinders of both cameras offer the same field of view (95%), but the viewfinder of the 550D has a higher magnification than the one of the D3100 (0.54x vs 0.53x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Canon 550D and Nikon D3100 along with similar information for a selection of comparators.

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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)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Canon 550Doptical n 3.0 1040 fixed n 1/4000s 3.7 Y n
2.
 
Nikon D3100optical n 3.0 230 fixed n 1/4000s 3.0 Y n
3.
 
Canon 4000Doptical n 2.7 230 fixed n 1/4000s 3.0 Y n
4.
 
Canon 750Doptical n 3.0 1040 swivel Y 1/4000s 5.0 Y n
5.
 
Canon 760Doptical Y 3.0 1040 swivel Y 1/4000s 5.0 Y n
6.
 
Canon 1200Doptical n 3.0 460 fixed n 1/4000s 3.0 Y n
7.
 
Canon 700Doptical n 3.0 1040 swivel Y 1/4000s 5.0 Y n
8.
 
Canon 650Doptical n 3.0 1040 swivel Y 1/4000s 5.0 Y n
9.
 
Canon 600Doptical n 3.0 1040 swivel n 1/4000s 3.7 Y n
10.
 
Canon 1100Doptical n 2.7 230 fixed n 1/4000s 3.0 Y n
11.
 
Canon 500Doptical n 3.0 920 fixed n 1/4000s 3.4 Y n
12.
 
Nikon D3200optical n 3.0 921 fixed n 1/4000s 4.0 Y n
13.
 
Nikon D5100optical n 3.0 921 swivel n 1/4000s 4.0 Y n
14.
 
Nikon D7000optical Y 3.0 921 fixed n 1/8000s 6.0 Y n
15.
 
Nikon D3000optical n 3.0 230 fixed n 1/4000s 3.0 Y n
16.
 
Nikon D5000optical n 2.7 230 full-flex n 1/4000s 4.0 Y n

Concerning the storage of imaging data, both the 550D and the D3100 write their files to SDXC 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 550D 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
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon 550DYstereo-Y-mini2.0---
2.
 
Nikon D3100Ymonomono--mini2.0---
3.
 
Canon 4000DYmonomono--mini2.0YY-
4.
 
Canon 750DYstereomonoY-mini2.0YY-
5.
 
Canon 760DYstereomonoY-mini2.0YY-
6.
 
Canon 1200DYmonomono--mini2.0---
7.
 
Canon 700DYstereomonoY-mini2.0---
8.
 
Canon 650DYstereomonoY-mini2.0---
9.
 
Canon 600DYmonomonoY-mini2.0---
10.
 
Canon 1100DYstereomono--mini2.0---
11.
 
Canon 500DYmonomono--mini2.0---
12.
 
Nikon D3200YmonomonoY-mini2.0---
13.
 
Nikon D5100YmonomonoY-mini2.0---
14.
 
Nikon D7000YmonomonoY-mini2.0---
15.
 
Nikon D3000Y-----2.0---
16.
 
Nikon D5000Ymonomono--mini2.0---

It is notable that the 550D 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.

Both the 550D and the D3100 have been discontinued, but can regularly be found used on eBay. The 550D was replaced by the Canon 600D, 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

So what is the bottom line? Which of the two cameras – the Canon 550D or the Nikon D3100 – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.

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Arguments in favor of the Canon EOS 550D:

  • More detail: Offers more megapixels (17.9 vs 14.2MP) with a 12% higher linear resolution.
  • Better video: Provides higher movie framerates (1080/30p versus 1080/24p).
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.54x vs 0.53x).
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
  • Faster burst: Shoots at higher frequency (3.7 vs 3 flaps/sec) to capture the decisive moment.
  • More heavily discounted: Has been on the market for longer (launched in February 2010).

ilogo

Advantages of the Nikon D3100:

  • Longer lasting: Gets more shots (550 versus 440) out of a single battery charge.
  • More affordable: Was released into a lower priced segment (14 percent cheaper at launch).
  • More modern: Was introduced somewhat (6 months) more recently.

If the number of relative strengths (bullet points above) is taken as a guide, the 550D is the clear winner of the match-up (7 : 3 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 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.

550D 07:03 D3100

How about other alternatives? Do the specifications of the Canon 550D 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 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 550D and the D3100 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], 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 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 550D..+ +77/1004/54.5/5 Feb 2010 699 i
2.
 
Nikon D31005/5+ +72/1004.5/54.5/5 Aug 2010 599 i
3.
 
Canon 4000D..o..3.5/53.5/5 Feb 2018 399 i
4.
 
Canon 750D5/5..75/1004.5/54.5/5 Feb 2015 749 i
5.
 
Canon 760D5/5+77/1004.5/54.5/5 Feb 2015 649 i
6.
 
Canon 1200D3/5+..4/54.5/5 Feb 2014 449 i
7.
 
Canon 700D....76/1004.5/54.5/5 Mar 2013 649 i
8.
 
Canon 650D4/5+ +77/1004.5/54.5/5 Jun 2012 849 i
9.
 
Canon 600D3/5o77/1004.5/54.5/5 Feb 2011 599 i
10.
 
Canon 1100D..80/10069/1004/54.5/5 Feb 2011 449 i
11.
 
Canon 500D..+ +74/1004.5/54.5/5 Mar 2009 799 i
12.
 
Nikon D32005/5+ +73/1004.5/54.5/5 Apr 2012 599 i
13.
 
Nikon D51005/5+ +76/1004.5/54.5/5 Apr 2011 749 i
14.
 
Nikon D70004/5..80/1004.5/54.5/5 Sep 2010 1,499 i
15.
 
Nikon D3000..+72/1004/54.5/5 Jul 2009 599 i
16.
 
Nikon D5000..+ +75/1004/54.5/5 Apr 2009 749 i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted 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 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.

Canon 550D:
Check Ebay offers
Nikon D3100:
Check Ebay offers

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: Canon 550D 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 550D Nikon D3100
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Canon EF mount lenses Nikon F mount lenses
    Launch Date February 2010 August 2010
    Launch Price USD 699 USD 599
    Sensor Specs Canon 550D Nikon D3100
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor APS-C Sensor
    Sensor Size 22.3 x 14.9 mm 23.1 x 15.4 mm
    Sensor Area 332.27 mm2 355.74 mm2
    Sensor Diagonal 26.8 mm 27.8 mm
    Crop Factor 1.6x 1.5x
    Sensor Resolution 17.9 Megapixels 14.2 Megapixels
    Image Resolution 5184 x 3456 pixels 4608 x 3072 pixels
    Pixel Pitch 4.31 μm 5.01 μm
    Pixel Density 5.39 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 - 6,400 ISO 100 - 3,200 ISO
    ISO Boost 100 - 12,800 ISO 100 - 12,800 ISO
    Image Processor DIGIC 4 EXPEED 2
    DXO Sensor Quality (score) 66 67
    DXO Color Depth (bits) 22.1 22.5
    DXO Dynamic Range (EV) 11.5 11.3
    DXO Low Light (ISO) 784 919
    Screen Specs Canon 550D Nikon D3100
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 95% 95%
    Viewfinder Magnification 0.54x 0.53x
    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 550D Nikon D3100
    Focus System Phase-detect AF Phase-detect AF
    Continuous Shooting 3.7 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
    Second Storage Option Single card slot Single card slot
    UHS card support no no
    Connectivity Specs Canon 550D Nikon D3100
    External Flash Hotshoe Hotshoe
    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 550D Nikon D3100
    Battery Type LP-E8 EN-EL14
    Battery Life (CIPA)440 shots per charge550 shots per charge
    Body Dimensions 129 x 98 x 62 mm
    (5.1 x 3.9 x 2.4 in)
    124 x 96 x 75 mm
    (4.9 x 3.8 x 3.0 in)
    Camera Weight 530 g (18.7 oz) 505 g (17.8 oz)

    Did you notice an error on this page? If so, please get in touch, so that we can correct the information.

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