Updated (October, 2011): Compare the Canon EOS 1D X vs Canon Rebel T3i

Canon EOS-1D Mark IV

100

"Very good high ISO performance even at 25,600"
dpreview.com | talking about the EOS-1D Mark IV's iso-noise
"Highly detailed 16MP images in a wide range of condition"
dpreview.com | talking about the EOS-1D Mark IV's image-quality

Reasons to buy the Canon EOS-1D Mark IV

Low light performance
Low noise at high ISO
1,320 ISO
Overall image quality
Great image quality
74.0
Color depth
Great color depth
22.8 bits
Dynamic range
Wide dynamic range
12 EV
Light sensitivity
High ISO
12,800 ISO
Weather sealed
Weather sealed
Shoot in extreme weather
Canon EOS Rebel T2i

71

Runner-up

Canon Rebel T2i

"Excellent detail and resolution"
dpreview.com | talking about the T2i's image-quality
"Since the body shell is virtually identical to the EOS 500D that it replaces, the handling is also virtually identical, meaning the grip still feels a bit fiddly unless you're got very delicate hands."
dpreview.com | talking about the T2i's feel

Reasons to buy the Canon Rebel T2i

Screen resolution
High resolution screen
1,040k dots
External mic jack
External mic jack
Record higher quality audio with a microphone
Size
Really small
Prosumer size 129x98x62 mm
Sensor cleaning
Self cleaning sensor
Avoids dust in your photos
Badge
Built-in focus motor
Autofocuses with more lenses
Thickness
Thin
2.4"

differences

Advantages of the Canon EOS-1D Mark IV

Low light performance Lower noise at high ISO 1,320 ISO vs 784 ISO
Help
The EOS-1D Mark IV has a slight edge (0.8 f-stops) in low noise, high ISO performance
Cross type focus points Many more cross-type focus points 39 vs 1
Help
Grab focus in difficult situations
Overall image quality Better image quality 74.0 vs 66.0
Help
More than 10% better image quality
Dynamic range More dynamic range 12 EV vs 11.5 EV
Help
0.5 f-stops more dynamic range
Continuous shooting Shoots much faster 10 fps vs 3.7 fps
Help
More than 2.5x faster continuous shooting
Weather sealed Weather sealed Yes vs No
Help
Sealed to shoot in the rain
Focus points Many more focus points 45 vs 9
Help
Set focus accurately within the frame
Color depth Better color depth 22.8 bits vs 22.1 bits
Help
Distinguishes 0.7 more bits of color
Shutter lag Significantly less shutter lag 104 ms vs 252 ms
Help
2.4x less delay when taking photos
Battery life Significantly longer battery life 1500 shots vs 440 shots
Help
Around 3.5x more shots per battery charge
Viewfinder coverage Much better viewfinder coverage 100% vs 95%
Help
Around 10% better viewfinder coverage
Sensor size Larger sensor APS-H 27.9x18.6mm vs APS-C 22.3x14.9mm
Help
Around 60% larger sensor
Light sensitivity (boost) Better boost ISO 102,400 ISO vs 12,800 ISO
Help
The EOS-1D Mark IV's boost ISO is 3 f-stops better
Light sensitivity Better maximum light sensitivity 12,800 ISO vs 6,400 ISO
Help
The EOS-1D Mark IV's maximum light sensitivity is 1 f-stop better
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
Storage slots Has more storage slots 2 vs 1
Help
More slots allows storing more images without switching memory cards
Fastest shutter speed Much faster max shutter speed 1/8000s vs 1/4000s
Help
2x faster max shutter speed
Canon EOS-1D Mark IV Learn more about
the Canon EOS-1D Mark IV

Advantages of the Canon T2i

Size Much smaller 129x98x62 mm vs 156x157x80 mm
Help
2.5x smaller
Sensor cleaning Has a self cleaning sensor Yes vs No
Help
Removes dust from the sensor automatically, avoiding spots in photos
Lens availability More lenses available 162 lenses vs 125 lenses
Help
Around 30% more lenses available
Screen resolution Higher resolution screen 1,040k dots vs 920k dots
Help
More than 10% higher resolution screen
Weight Much lighter 530 g vs 1,230 g
Help
2.3x lighter
Thickness Much thinner 2.4" vs 3.1"
Help
More than 20% thinner
True resolution Higher true resolution 17.9 MP vs 16 MP
Help
Capture more than 10% more detail in your photos
Lowest price Significantly cheaper $499.00 vs $4,999.99
Help
The best price we've seen is $4,501 cheaper (10x less)
Built-in flash Built-in flash Yes vs No
Help
A built-in flash is useful for taking indoor shots where there is little light
Canon EOS Rebel T2i Learn more about
the Canon T2i
vs

recommendations

Relative to the best recent DSLRs, and ignoring price

Canon EOS-1D Mark IV Canon EOS-1D Mark IV
100 vs 71
Explain scores
Canon Rebel T2i Canon EOS Rebel T2i
Green arrow Snapsort recommends the Canon EOS-1D Mark IV. This recommendation, however, should be taken with a grain of salt since it doesn't always make sense to compare a pro DSLR with a entry-level DSLR.

performance Which camera has better performance? Cast your vote!

CanonEOS-1D Mark IV
Canon EOS-1D Mark IV vs Canon EOS Rebel T2i
CanonRebel T2i
Uses Travel score Travel
On holiday or vacation
0
0
Vote Vote
Sports score Sports
Fast action, sometimes indoors
0
0
Vote Vote
Features Color accuracy Color accuracy
White balance in varied lighting
0
0
Vote Vote
Autofocus peformance Still image focusing
Speed and accuracy
0
0
Vote Vote
Autofocus performance Video focusing
Speed and accuracy
0
0
Vote Vote
Manual controls Manual settings
How quickly and easily you can change settings
0
0
Vote Vote
Build quality Build quality
Is it sturdy, well made, plastic or metal
0
0
Vote Vote
Green arrow Join in the discussion below!

similarities

Compared to recent DSLRs

Common Strengths Common Weaknesses
Movie format Both shoot high resolution HD movies Help
1080p @ 30fps
Screen resolution High resolution screens Help
EOS-1D Mark IV:920k dots
T2i:1,040k dots
Supports 24p 24p support Help
For that film look
Startup delay Minimal startup delay Help
400 ms startup delay
HDR Neither has in-camera HDR Help
You could do HDR manually
Screen flips out No flip-out screens Help
Less flexible
Image stabilization No image stabilization Help
Risk of blur
Panorama Neither camera stitches together panoramas Help
You could stitch photos in post
3D Neither camera can take 3D photos Help
No 3d support

dxomark

DXOMark

competitors

Shared Competitors

Advantages

Disadvantages

Canon Rebel T3i

Canon Rebel T3i

Entry-level DSLR

$609 - $800 body only

$709 - $1,180 with 18-55mm lens

Screen flips out Has a screen which flips out
Fastest shutter speed Has a slower max shutter speed
Thickness Is thicker
Nikon D5100

Nikon D5100

Entry-level DSLR

$650 - $749 body only

$600 - $750 with 18-55mm lens

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

Nikon D3100

Entry-level DSLR

$500 - $984 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 Rebel T3

Canon Rebel T3

Entry-level DSLR

$379 body only

$460 - $550 with 18-55mm lens

Fastest shutter speed Has a slower max shutter speed
Thickness Is thicker
Canon EOS 60D

Canon EOS 60D

Pro DSLR

$899 - $1,304 body only

$1,138 - $1,342 with 18-135mm lens

Screen flips out Has a screen which flips out
Thickness Is thicker
Weight Is slightly heavier
Canon EOS 5D Mark II

Canon EOS 5D Mark II

Pro DSLR

$2,400 body only

$2,799 - $2,839 with 24-105mm lens

Low light performance Is slightly less noisy at high ISO
Overall image quality Has slightly better image quality
Lowest price Is slightly more expensive
Thickness Is thicker
Canon EOS 7D

Canon EOS 7D

Pro DSLR

$1,329 - $1,821 body only

$1,498 - $1,800 with 28-135mm lens

Thickness Is thicker
Weight Is significantly heavier

Canon EOS-1D Mark IV Competitors

Advantages

Disadvantages

Canon EOS-1Ds Mark III

Canon EOS-1Ds Mark III

Pro DSLR

$7,714 body only

Viewfinder size Much larger viewfinder
Low light performance Lower noise at high ISO
Movie format Does not take movies
Screen resolution Much lower resolution screen
Nikon D3S

Nikon D3S

Pro DSLR

$5,197 body only

Low light performance Much lower noise at high ISO
Overall image quality Better image quality
Movie format Lower resolution movies
Cross type focus points Many fewer cross-type focus points
Nikon D3X

Nikon D3X

Pro DSLR

$8,000 body only

Overall image quality Significantly better image quality
Low light performance Significantly lower noise at high ISO
Cross type focus points Many fewer cross-type focus points
Continuous shooting Shoots significantly slower
Nikon D4

Nikon D4

Pro DSLR

$6,000 body only

Screen size Significantly larger screen
Viewfinder size Significantly larger viewfinder
Cross type focus points Many fewer cross-type focus points
Size Larger

Canon EOS Rebel T2i Competitors

Advantages

Disadvantages

Canon EOS Rebel T1i

Canon Rebel T1i

Entry-level DSLR

$445 - $629 body only

$504 - $609 with 18-55mm lens

Shutter lag Less shutter lag
Startup delay Less startup delay
Color depth Worse color depth
External mic jack Lacks an external mic jack
Nikon D90

Nikon D90

Entry-level DSLR

$869 - $897 body only

$1,099 - $1,200 with 18-105mm lens

Dynamic range More dynamic range
Overall image quality Better image quality
Movie format Lower resolution movies
External mic jack Lacks an external mic jack

appearance

Canon EOS-1D Mark IV Canon EOS Rebel T2i
Canon EOS-1D Mark IV Canon EOS Rebel T2i
Canon EOS-1D Mark IV Canon EOS Rebel T2i

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discussion Which do you think is better?

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