Updated (February, 2011): Compare the Canon EOS 40D vs Canon EOS 600D

Canon EOS 40D

Tie
Canon EOS 40D

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Reasons to buy the Canon EOS 40D

Continuous shooting
Rapid fire
6.5 fps
Shutter lag
Barely any delay taking photos
128 ms shutter lag
Battery life
Great battery life
1100 shots
Sensor cleaning
Self cleaning sensor
Avoids dust in your photos
 

Reasons to buy the Canon EOS 550D

Screen resolution
High resolution screen
1,040k dots
Supports 24p
24p movies
For that film look
External mic jack
External mic jack
Record higher quality audio with a microphone
Size
Really small
Prosumer size 129x98x62 mm
 
Differences | Recommendations | Cast your vote | Similarities | Competitors | Appearance | Discussion

differences

Advantages of the Canon 40D

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Shutter lag Significantly less shutter lag 128 ms vs 252 ms
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Around 50% less delay when taking photos
Battery life Significantly longer battery life 1100 shots vs 440 shots
Help
2.5x more shots per battery charge
Continuous shooting Shoots faster 6.5 fps vs 3.7 fps
Help
Around 80% faster continuous shooting
Cross type focus points More cross-type focus points 9 vs 1
Help
Grab focus in difficult situations
Viewfinder size Larger viewfinder 0.59x vs 0.54x
Help
Around 20% larger viewfinder
Viewfinder Has a pentaprism viewfinder Pentaprism vs Pentamirror
Help
Pentaprism viewfinders are typically brighter
Fastest shutter speed Much faster max shutter speed 1/8000s vs 1/4000s
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2x faster max shutter speed
Canon EOS 40D Learn more about
the Canon 40D

Advantages of the Canon 550D

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Screen resolution Much higher resolution screen 1,040k dots vs 230k dots
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More than 4.5x higher resolution screen
Movie format Shoots movies 1080p @ 30fps vs None
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Shoots Full HD (1080p) video as well as still pictures
True resolution Significantly higher true resolution 17.9 MP vs 10.1 MP
Help
Capture around 80% more detail in your photos
Dynamic range More dynamic range 11.5 EV vs 11.3 EV
Help
0.2 f-stops more dynamic range
Overall image quality Slightly better image quality 66.0 vs 64.0
Help
Almost the same
Size Smaller 129x98x62 mm vs 146x108x74 mm
Help
More than 30% smaller
Thickness Much thinner 2.4" vs 2.9"
Help
Around 20% thinner
Light sensitivity Better maximum light sensitivity 6,400 ISO vs 1,600 ISO
Help
The 550D's maximum light sensitivity is 2 f-stops better
Weight Significantly lighter 530 g vs 822 g
Help
Around 40% lighter
Light sensitivity (boost) Better boost ISO 12,800 ISO vs 3,200 ISO
Help
The 550D's boost ISO is 2 f-stops better
Canon EOS 550D Learn more about
the Canon 550D
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recommendations

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

Canon EOS 40D Canon EOS 40D 58

vs

56 Canon EOS 550D Canon EOS 550D
Retailer
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        similarities

        Compared to recent DSLRs

        Common Strengths Common Weaknesses
        Lens availability Many lenses available Help
        197 lenses
        Startup delay Minimal startup delay Help
        400 ms startup delay
        Thickness Thin Help
        40D:2.9"
        550D:2.4"
        Built-in flash Each has a built-in flash Help
        External flash not needed
        Viewfinder coverage Below average viewfinder coverage Help
        95%
        Storage slots Fewer storage slots Help
        1
        Autofocus No video autofocus Help
        Manual focus only
        Built-in focus motor No focus motor Help
        Won't autofocus with all lenses
        HDR Neither has in-camera HDR Help
        You could do HDR manually
        Light sensitivity (boost) Poor boost ISO Help
        40D:3,200 ISO
        550D:12,800 ISO
        Weather sealed Neither is weather sealed Help
        Need to shelter it from weather
        Focus points Few focus points Help
        9
        Light sensitivity Poor maximum light sensitivity Help
        40D:1,600 ISO
        550D:6,400 ISO
        Sensor size Very small sensors Help
        40D:APS-C 22.2x14.8mm
        550D:APS-C 22.3x14.9mm
        Screen flips out No flip-out screens Help
        Less flexible
        Dynamic range Poor dynamic range Help
        40D:11.3 EV
        550D:11.5 EV
        True resolution Capture low resolution images Help
        40D:10.1 MP
        550D:17.9 MP
        Panorama Neither camera stitches together panoramas Help
        You could stitch photos in post
        Image stabilization No image stabilization Help
        Risk of blur
        Color depth Poor color depth Help
        22.1 bits
        Overall image quality Low image quality Help
        40D:64.0
        550D:66.0
        Viewfinder size Below average viewfinder size Help
        40D:0.59x
        550D:0.54x
        Low light performance Above average noise at high ISO Help
        40D:703 ISO
        550D:784 ISO

        dxomark

        DXOMark

        competitors

        Shared Competitors

        Advantages

        Disadvantages

        Canon EOS 600D

        Canon EOS 600D

        Entry-level DSLR

        $1,299 with 18-135mm, 75-300mm lenses

        Screen flips out Has a screen which flips out
        Fastest shutter speed Has a slower max shutter speed
        Thickness Is thicker
        Canon EOS 60D

        Canon EOS 60D

        Pro DSLR

        $650 - $699 body only

        $450 - $1,182 with 18-135mm lens

        Weather sealed Has a weather sealed body
        Screen flips out Has a screen which flips out
        Thickness Is thicker
        Weight Is slightly heavier
        Canon EOS 1100D

        Canon EOS 1100D

        Entry-level DSLR

        $450 with 18-55mm lens

        Startup delay Has slightly less startup delay
        Fastest shutter speed Has a slower max shutter speed
        Thickness Is thicker
        Canon EOS 700D

        Canon EOS 700D

        Entry-level DSLR

        $1,468 with 18-55mm lens

        Touch screen Has a touch screen
        Screen flips out Has a screen which flips out
        Fastest shutter speed Has a slower max shutter speed
        Thickness Is thicker
        Canon EOS 1200D

        Canon EOS 1200D

        Entry-level DSLR

        $419 body only

        $500 with 18-55mm lens

        Movie continuous focus Can focus continuously while recording movies
        Autofocus Focuses automatically while shootting video
        Fastest shutter speed Has a slower max shutter speed
        Thickness Is thicker
        Nikon D3200

        Nikon D3200

        Entry-level DSLR

        $319 body only

        $477 with 18-55mm lens

        Overall image quality Has significantly better image quality
        Color depth Has significantly more color depth
        Fastest shutter speed Has a slower max shutter speed
        Thickness Is thicker
        Nikon D3100

        Nikon D3100

        Entry-level DSLR

        $273 body only

        $427 - $480 with 18-55mm lens

        Movie continuous focus Can focus continuously while recording movies
        Autofocus Focuses automatically while shootting video
        Fastest shutter speed Has a slower max shutter speed
        Thickness Is thicker

        Canon EOS 40D Competitors

        Advantages

        Disadvantages

        No significant competitors found that are specific to the Canon EOS 40D.

        Canon EOS 550D Competitors

        Advantages

        Disadvantages

        No significant competitors found that are specific to the Canon EOS 550D.

        appearance

        Canon EOS 40D Canon EOS 550D
        Canon EOS 40D Canon EOS 550D
        Canon EOS 40D Canon EOS 550D

        discussion

        Canon EOS 40D
        EOS 40D
        Canon

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        Canon EOS 550D
        EOS 550D
        Canon

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