Updated (February, 2012): Compare the Canon EOS 5D Mark III vs Canon EOS Digital Rebel XTi

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Reasons to buy the Canon EOS 5D Mark II

Overall image quality
Great image quality
79.0
Color depth
Great color depth
23.7 bits
Viewfinder size
Large viewfinder
0.71x
True resolution
High true resolution
21 MP
 

Reasons to buy the Canon EOS Digital Rebel XTi

Size
Really small
Prosumer size 127x94x65 mm
Thickness
Thin
2.6"
Weight
Light-weight
556 g
Built-in flash
Built-in flash
External flash not needed
 
Differences | Recommendations | Cast your vote | Similarities | Competitors | Appearance | Discussion

differences

Advantages of the Canon 5D Mark II

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Screen resolution Much higher resolution screen 920k dots vs 230k dots
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4x higher resolution screen
Screen size Much larger screen 3.0" vs 2.5"
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More than 20% larger screen
Overall image quality Significantly better image quality 79.0 vs 62.0
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Around 30% better image quality
Low light performance Significantly lower noise at high ISO 1,815 ISO vs 664 ISO
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The 5D Mark II has excellent image quality 1.5 f-stops higher ISO than the Rebel XTi
Autofocus Faster autofocus Phase detection vs Contrast detection
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Catch candid moments easily
Live view Has live view Yes vs No
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Preview your photos on the camera's screen before taking them
Dynamic range More dynamic range 11.9 EV vs 11 EV
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0.9 f-stops more dynamic range
Movie format Shoots movies 1080p @ 30fps vs None
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Shoots Full HD (1080p) video as well as still pictures
Viewfinder size Much larger viewfinder 0.71x vs 0.49x
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More than 2x larger viewfinder
Color depth Better color depth 23.7 bits vs 22.1 bits
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Distinguishes 1.6 more bits of color
Startup delay Much less startup delay 400 ms vs 2500 ms
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6.2x less delay when turning on
True resolution Much higher true resolution 21 MP vs 10.1 MP
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Capture more than 2x more detail in your photos
Sensor size Much larger sensor Full frame 36.0x24.0mm vs APS-C 22.2x14.8mm
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More than 2.5x larger sensor
Weather sealed Weather sealed Yes vs No
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Sealed to shoot in the rain
Battery life Longer battery life 850 shots vs 370 shots
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Around 2.5x more shots per battery charge
Viewfinder coverage Significantly better viewfinder coverage 98% vs 95%
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Almost the same
Viewfinder Has a pentaprism viewfinder Pentaprism vs Pentamirror
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Pentaprism viewfinders are typically brighter
Light sensitivity Better maximum light sensitivity 6,400 ISO vs 1,600 ISO
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The 5D Mark II's maximum light sensitivity is 2 f-stops better
Continuous shooting Shoots faster 3.9 fps vs 3 fps
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30% faster continuous shooting
Fastest shutter speed Much faster max shutter speed 1/8000s vs 1/4000s
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2x faster max shutter speed
Light sensitivity (boost) Has boost ISO 25,600 ISO vs None
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Allows taking photos in darker situations, often at the cost of additional noise in the image
Canon EOS 5D Mark II Learn more about
the Canon 5D Mark II

Advantages of the Canon Rebel XTi

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Lens availability More lenses available 197 lenses vs 156 lenses
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Around 30% more lenses available
Size Significantly smaller 127x94x65 mm vs 152x114x75 mm
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More than 40% smaller
Thickness Significantly thinner 2.6" vs 3"
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More than 10% thinner
Weight Lighter 556 g vs 850 g
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More than 30% lighter
Built-in flash Built-in flash Yes vs No
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A built-in flash is useful for taking indoor shots where there is little light
Lowest price Cheaper $1,000.00 vs $3,120.39
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The best price we've seen is $2,120 cheaper (3.1x less)
Canon EOS Digital Rebel XTi Learn more about
the Canon Rebel XTi
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recommendations

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

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Canon EOS 5D Mark II Canon EOS 5D Mark II 82
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        42 Canon EOS Digital Rebel XTi Canon EOS Digital Rebel XTi
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              similarities

              Compared to recent DSLRs

              Common Strengths Common Weaknesses
              Thickness Thin Help
              5D Mark II:3"
              Rebel XTi:2.6"
              Storage slots Fewer storage slots Help
              1
              HDR Neither has in-camera HDR Help
              You could do HDR manually
              Autofocus No video autofocus Help
              Manual focus only
              Continuous shooting Slow continuous shooting Help
              5D Mark II:3.9 fps
              Rebel XTi:3 fps
              Light sensitivity Poor maximum light sensitivity Help
              5D Mark II:6,400 ISO
              Rebel XTi:1,600 ISO
              Screen flips out No flip-out screens Help
              Less flexible
              Panorama Neither camera stitches together panoramas Help
              You could stitch photos in post
              Image stabilization No image stabilization Help
              Risk of blur
              Dynamic range Poor dynamic range Help
              5D Mark II:11.9 EV
              Rebel XTi:11 EV

              dxomark

              DXOMark

              competitors

              Shared Competitors

              Advantages

              Disadvantages

              Canon EOS 7D

              Canon EOS 7D

              Pro DSLR

              $1,299 body only

              $1,599 - $1,799 with 18-135mm lens

              Continuous shooting Shoots faster continuously
              Shutter lag Has slightly less shutter lag
              Thickness Is thicker
              Weight Is slightly heavier
              Canon EOS 70D

              Canon EOS 70D

              Pro DSLR

              $1,099 - $1,231 body only

              $1,249 with 18-55mm lens

              Screen resolution Has a slightly higher resolution screen
              Touch screen Has a touch screen
              Thickness Is thicker
              Weight Is slightly heavier
              Canon EOS 60D

              Canon EOS 60D

              Pro DSLR

              $699 - $871 body only

              $999 - $1,150 with 18-135mm lens

              Screen resolution Has a slightly higher resolution screen
              Screen flips out Has a screen which flips out
              Thickness Is thicker
              Weight Is slightly heavier
              Canon Rebel T3i

              Canon Rebel T3i

              Entry-level DSLR

              $499 - $749 body only

              $550 - $600 with 18-55mm lens

              Screen resolution Has a slightly higher resolution screen
              Screen flips out Has a screen which flips out
              Fastest shutter speed Has a slower max shutter speed
              Thickness Is thicker
              Canon EOS Rebel T2i

              Canon Rebel T2i

              Entry-level DSLR

              $575 body only

              $650 - $779 with 18-55mm lens

              Screen resolution Has a slightly higher resolution screen
              Thickness Is thinner
              Fastest shutter speed Has a slower max shutter speed
              Shutter lag Has slightly more shutter lag
              Nikon D3200

              Nikon D3200

              Entry-level DSLR

              $497 with 18-55mm lens

              Dynamic range Has slightly wider dynamic range
              True resolution Takes slightly higher resolution photos
              Fastest shutter speed Has a slower max shutter speed
              Thickness Is thicker
              Nikon D5200

              Nikon D5200

              Entry-level DSLR

              $647 body only

              $650 - $747 with 18-55mm lens

              Overall image quality Has slightly better image quality
              Dynamic range Has significantly wider dynamic range
              Fastest shutter speed Has a slower max shutter speed
              Thickness Is thicker

              Canon EOS 5D Mark II Competitors

              Advantages

              Disadvantages

              Canon EOS 6D

              Canon EOS 6D

              Pro DSLR

              $1,690 - $1,899 body only

              $2,385 - $2,499 with 24-105mm lens

              HDR Has in-camera HDR
              Low light performance Lower noise at high ISO
              Shutter lag More shutter lag
              Viewfinder coverage Less viewfinder coverage
              Canon EOS 5D Mark III

              Canon EOS 5D Mark III

              Pro DSLR

              $3,399 body only

              $3,999 with 24-105mm lens

              Cross type focus points Many more cross-type focus points
              HDR Has in-camera HDR
              Dynamic range Less dynamic range
              Startup delay Slightly more startup delay
              Nikon D7100

              Nikon D7100

              Entry-level DSLR

              $1,147 body only

              $1,447 - $1,470 with 18-140mm lens

              Screen resolution Significantly higher resolution screen
              Dynamic range More dynamic range
              Low light performance More noise at high ISO
              Sensor size Much smaller sensor
              Nikon D700

              Nikon D700

              Pro DSLR

              $3,049 body only

              Low light performance Lower noise at high ISO
              Focus points Many more focus points
              Movie format Does not take movies
              True resolution Much lower true resolution

              Canon EOS Digital Rebel XTi Competitors

              Advantages

              Disadvantages

              Canon Rebel T3

              Canon Rebel T3

              Entry-level DSLR

              $276 - $298 body only

              $385 - $450 with 18-55mm lens

              Autofocus Faster autofocus
              Live view Has live view
              Sensor cleaning Lacks a self cleaning sensor
              Color depth Worse color depth
              Canon EOS Digital Rebel XSi

              Canon EOS Digital Rebel XSi

              Entry-level DSLR

              $780 with 18-55mm lens

              Screen size Much larger screen
              Autofocus Faster autofocus
              Color depth Worse color depth
              Dynamic range Less dynamic range
              Canon EOS Digital Rebel XS

              Canon EOS Digital Rebel XS

              Entry-level DSLR

              $400 with 18-55mm lens

              Live view Has live view
              Startup delay Much less startup delay
              Dynamic range Less dynamic range
              Color depth Worse color depth
              Nikon D3100

              Nikon D3100

              Entry-level DSLR

              $392 - $427 with 18-55mm lens

              Screen size Much larger screen
              Autofocus Faster autofocus
              Shutter lag More shutter lag
              Lens focus motor Doesn't have a built-in focus motor
              Placeholder

              Canon EOS Digital Rebel XT

              Entry-level DSLR

              $426 with 18-55mm lens

              Lowest price Slightly cheaper
              Thickness Slightly thinner
              Screen size Much smaller screen
              Color depth Worse color depth

              appearance

              Canon EOS 5D Mark II Canon EOS Digital Rebel XTi
              Canon EOS 5D Mark II Canon EOS Digital Rebel XTi
              Canon EOS 5D Mark II Canon EOS Digital Rebel XTi

              discussion

              Canon EOS 5D Mark II
              EOS 5D Mark II
              Canon

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              Canon EOS Digital Rebel XTi
              EOS Digital Rebel XTi
              Canon

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