Camera Rocket Review Our evaluation of D3100 vs T3

Image Quality

RAW image quality independent of lens

D3100
9.9
Rebel T3
9.4
DxOMark Low light, DxOMark Color depth and DxOMark Dynamic range

Focusing

How fast and easily does the camera nail focus

D3100
6.5
Rebel T3
6.3
Focus lag, cross type focus points and focus points

Responsiveness

How much delay is there between you and your photo?

D3100
8.3
Rebel T3
8.4
Focus lag, continuous shooting and Startup delay

Reviews

What do the experts think?

D3100
9.2
Rebel T3
9.0
Reviews from nikonrumors.com, techradar.com, trustedreviews.com, sonyalpharumors.com and 5 more

Camera Rocket Score

Image Quality, Focusing, Responsiveness and Reviews

D3100
9.0
Rebel T3
8.8

Winner
Nikon D3100 

Camera Rocket recommends the Nikon D3100  based on its image quality, focusing and reviews.

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Benchmarks Real world tests of D3100 vs Rebel T3

Low light image quality Highest ISO setting that still achieves great image quality

D3100
919 ISO
Rebel T3
755 ISO

Resolution Results from photos of standard resolution charts

D3100
2,400 LPH
Rebel T3
1,700 LPH

Focus lag Delay between fully pressing shutter to image capture

D3100
279 ms
Rebel T3
309 ms

Shutter lag Delay to take a photo when prefocused

D3100
117 ms
Rebel T3
113 ms

Startup delay Delay from power on to first photo

D3100
400 ms
Rebel T3
300 ms

Continuous shooting Delay between fully pressing shutter to image capture

D3100
3 fps
Rebel T3
3 fps

Features Key features of the D3100  vs Rebel T3 

Megapixels Maximum resolution images are captured at

D3100
14.2 MP
Rebel T3
12.2 MP

Max ISO Maximum light sensitivity of the sensor

D3100
12,800 ISO
Rebel T3
6,400 ISO

Focus points How many different points the camera can focus on

Screen size Larger screens make it easier to preview and review photos

D3100
3"
Rebel T3
2.7"

Viewfinder size Large viewfinders are brighter and more comfortable to use

D3100
0.51x
Rebel T3
0.54x

Pixel size How much area of the sensor is dedicated to each pixel

D3100
25.1 microns
Rebel T3
26.8 microns

Reviews Word on the street

D3100  vs Rebel T3 

7.2
6.9
With the standard AF-S Nikkor 18-55mm F3.5-5.6 VR kit zoom, the focus speed is perfectly acceptable, but not spectacular (you really need to use a better lens for the true benefits of the D3100's sophisticated AF system to become apparent).
D3100

9.0
9.0
The Nikon D3100 lets you dial in shutter speeds of up to 30 seconds and has a Bulb mode as well for exposure times of practically any length, which is very good news if you are seriously interested in night photography.
D3100

9.0
7.0
Remarkably, at ISO3200 only the sharpest pair of eyes would notice any difference between this and the previous two ISO settings.
D3100

9.0
8.0
Even so, the LCD looks fairly accurate in terms of brightness, contrast and colour balance, and that's what is most important.
D3100

Overall

8.5 Out of 10
8.0 Out of 10

Specifications Full list of technical specs

sensor

D3100  vs
Rebel T3 
Type CMOS CMOS
Megapixels 14.2 MP 12.2 MP
Resolution 4608 x 3072 4272 x 2848
Size APS-C APS-C
Area 23.1 x 15.4 mm 22.2 x 14.7 mm
Crop factor 1.6x 1.6x
Pixel size 25.1 microns 26.8 microns
Light sensitivity 100 ISO to 3,200 ISO 100 ISO to 6,400 ISO
Codecs
RAW
JPEG
Self cleaning sensor Yes No
Tested vertical resolution 2,400 LPH 1,700 LPH
Tested horizontal resolution 2,400 LPH 1,700 LPH

focus system

Type Phase detection Phase detection
Focus points 11 9
Cross type focus points 1 1
Supports continuous No No

shutter

Min 30 s 30 s
Max 1/4000 s 1/4000 s

form factor

Size 124.5 x 96.5 x 73.7 mm 130 x 100 x 78 mm
Thickness 73.7 mm 78 mm
Weight 505 g 459 g
Is weather sealed No No

features

Is a smart camera No No
Includes a GPS No No
Supports HDR No No
Automatic panorama No No
Create realistic 3D images No No
Image stabilization

video

D3100  vs
Rebel T3 
Video 1920 x 1080 @ 24 fps 1280 x 720 @ 30 fps
Shoots video in 24p Yes No
Shoots high speed video No No
External mic jack None None
Autofocus while shooting video Contrast detection

display

Type LCD LCD
Size 3" 2.7"
Resolution 230 k dots 230 k dots
Has a touch screen No No
Has a flip out screen No No
Supports live view Yes Yes

viewfinder

Viewfinder mirror Opaque Opaque
Viewfinder Yes Yes
Type Pentamirror Pentamirror
Coverage 95% 95%
Magnification 0.8x 0.87x
Viewfinder size 0.51x 0.54x

performance

Max continuous shooting 3 fps 3 fps
Battery life 550 700
Continuous shooting
3 fps, JPEG
Focus lag 279 ms 309 ms
Shutter lag 117 ms 113 ms
Startup delay 400 ms 300 ms
Nikon D3100
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Canon Rebel T3
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