Updated (August, 2010): Compare the Canon EOS 400D vs Nikon D3100

Canon EOS 400D

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Canon EOS 400D

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vs

Nikon D3000

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Nikon D3000

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Reasons to buy the Canon EOS 400D

Really small
Size
Prosumer size 127x94x65 mm
Self cleaning sensor
Sensor cleaning
Avoids dust in your photos
CMOS Sensor
Sensor type
Better in low light
Thin
Thickness
2.6"
 

Reasons to buy the Nikon D3000

Screen size
Large screen
3.0"
Sensor size
Large sensor
APS-C 23.6x15.8mm
Badge
Phase detection autofocus
fast and accurate
Size
Really small
Prosumer size 126x97x64 mm
 

differences

Advantages of the Canon 400D

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Low light performance
Lower noise at high ISO
664 ISO vs 563 ISO
Help
The 400D has a slight edge (0.2 f-stops) in low noise, high ISO performance
Sensor type
Has a CMOS-family sensor
CMOS vs CCD
Help
CMOS-family sensors often produce better quality images
Shutter lag
Less shutter lag
200 ms vs 262 ms
Help
More than 20% less delay when taking photos
Canon EOS 400D Learn more about
the Canon 400D

Advantages of the Nikon D3000

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Screen size
Much larger screen
3.0" vs 2.5"
Help
More than 20% larger screen
Startup delay
Much less startup delay
700 ms vs 2500 ms
Help
3.6x less delay when turning on
Autofocus
Faster autofocus
Phase detection vs Contrast detection
Help
Catch candid moments easily
Sensor size
Much larger sensor
APS-C 23.6x15.8mm vs APS-C 22.2x14.8mm
Help
More than 10% larger sensor
Battery life
Longer battery life
550 shots vs 370 shots
Help
Around 50% more shots per battery charge
Viewfinder size
Larger viewfinder
0.52x vs 0.49x
Help
More than 10% larger viewfinder
Color depth
Better color depth
22.3 bits vs 22.1 bits
Help
Distinguishes 0.2 more bits of color
Dynamic range
More dynamic range
11.1 EV vs 11 EV
Help
0.1 f-stops more dynamic range
Lens availability
Slightly more lenses available
205 lenses vs 197 lenses
Help
Almost the same
Focus points
Slightly more focus points
11 vs 9
Help
Set focus accurately within the frame
Light sensitivity (boost)
Has boost ISO
3,200 ISO vs None
Help
Allows taking photos in darker situations, often at the cost of additional noise in the image
Weight
Lighter
485 g vs 556 g
Help
More than 10% lighter
Thickness
Slightly thinner
2.5" vs 2.6"
Help
Almost the same
Nikon D3000 Learn more about
the Nikon D3000
vs

recommendations

Which camera do we recommend? Relative to the best recent entry-level DSLRs, and ignoring price

Canon EOS 400D Canon EOS 400D 35
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    Style
      Color
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        vs

        34 Nikon D3000 Nikon D3000
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          Style
            Color
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              similarities

              Compared to recent entry-level DSLRs

              Common Strengths
              Lens availability Many lenses available Help
              400D:197 lenses
              D3000:205 lenses
              Size Very small Help
              400D:127x94x65 mm
              D3000:126x97x64 mm
              Thickness Very thin Help
              400D:2.6"
              D3000:2.5"
              Common Weaknesses
              Movie format Do not shoot movies Help
              No movies
              Fastest shutter speed Slow max shutter speed Help
              1/4000 of a second
              Live view No live view Help
              Preview with viewfinder
              Light sensitivity (boost) One has boost ISO Help
              400D:None
              D3000:3,200 ISO
              Autofocus No video autofocus Help
              Manual focus only
              HDR Neither has in-camera HDR Help
              You could do HDR manually
              True resolution Capture low resolution images Help
              400D:10.1 MP
              D3000:10 MP
              Viewfinder coverage Below average viewfinder coverage Help
              95%
              Continuous shooting Slow continuous shooting Help
              3 fps
              Screen resolution Low resolution screens Help
              230k dots
              Light sensitivity Poor maximum light sensitivity Help
              1,600 ISO
              Dynamic range Poor dynamic range Help
              400D:11 EV
              D3000:11.1 EV
              Viewfinder size Below average viewfinder size Help
              400D:0.49x
              D3000:0.52x
              Image stabilization No image stabilization Help
              Risk of blur
              Weather sealed Neither is weather sealed Help
              Need to shelter it from weather
              Screen flips out No flip-out screens Help
              Less flexible
              Focus points Few focus points Help
              400D:9
              D3000:11
              Panorama Neither camera stitches together panoramas Help
              You could stitch photos in post
              Overall image quality Low image quality Help
              62.0
              Low light performance Above average noise at high ISO Help
              400D:664 ISO
              D3000:563 ISO

              dxomark

              DXOMark

              competitors

              Shared Competitors

              Advantages

              Disadvantages

              Nikon D3100

              Nikon D3100

              Entry-level DSLR

              $272 - $387 body only

              $410 with 18-55mm lens

              Low light performance Is slightly less noisy at high ISO
              Overall image quality Has slightly better image quality
              Thickness Is thicker
              Size Is slightly larger
              Canon EOS 1100D

              Canon EOS 1100D

              Entry-level DSLR

              $450 with 18-55mm lens

              Movie format Records lower quality movies
              True resolution Takes slightly higher resolution photos
              Thickness Is thicker
              Sensor cleaning Lacks a self cleaning sensor
              Nikon D3200

              Nikon D3200

              Entry-level DSLR

              $310 - $527 body only

              $389 - $447 with 18-55mm lens

              Low light performance Is significantly less noisy at high ISO
              Overall image quality Has much better image quality
              Thickness Is thicker
              Size Is significantly larger
              Canon EOS 600D

              Canon EOS 600D

              Entry-level DSLR

              $491 body only

              $578 with 18-135mm lens

              Low light performance Is slightly less noisy at high ISO
              Movie format Records higher quality movies
              Lowest price Is slightly more expensive
              Thickness Is thicker
              Canon EOS 1000D

              Canon EOS 1000D

              Entry-level DSLR

              $840 with 18-55mm lens

              Live view Lets you preview your photos on the screen
              Startup delay Has slightly less startup delay
              Lowest price Is much more expensive
              Canon EOS 450D

              Canon EOS 450D

              Entry-level DSLR

              $423 body only

              True resolution Takes slightly higher resolution photos
              Live view Lets you preview your photos on the screen
              Color depth Has slightly less color depth
              Canon EOS 1200D

              Canon EOS 1200D

              Entry-level DSLR

              $429 body only

              $498 with 18-55mm lens

              Movie format Records higher quality movies
              Screen resolution Has a slightly higher resolution screen
              Thickness Is thicker
              Sensor cleaning Lacks a self cleaning sensor

              Canon EOS 400D Competitors

              Advantages

              Disadvantages

              Canon EOS 700D

              Canon EOS 700D

              Entry-level DSLR

              $700 with 18-55mm lens

              Movie format Shoots movies
              Screen size Much larger screen
              Color depth Worse color depth
              Size Much larger

              Nikon D3000 Competitors

              Advantages

              Disadvantages

              Nikon D5000

              Nikon D5000

              Entry-level DSLR

              $796 with 18-55mm lens

              Movie format Shoots movies
              Low light performance Significantly lower noise at high ISO
              Screen size Significantly smaller screen
              Size Much larger
              Nikon D3300

              Nikon D3300

              Entry-level DSLR

              $439 - $497 with 18-55mm lens

              Movie format Shoots movies
              Low light performance Much lower noise at high ISO
              Size Significantly larger
              Thickness Much thicker
              Nikon D90

              Nikon D90

              Entry-level DSLR

              $750 body only

              $900 with 18-55mm lens

              Movie format Shoots movies
              Low light performance Significantly lower noise at high ISO
              Size Much larger
              Thickness Much thicker

              appearance

              Canon EOS 400D Nikon D3000
              Canon EOS 400D Nikon D3000
              Canon EOS 400D Nikon D3000

              discussion

              Canon EOS 400D
              EOS 400D
              Canon

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              Nikon D3000
              D3000
              Nikon

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