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Compare my rebel Xti to the eos 6d.

Salann
Apprentice
 
2 REPLIES 2

Skirball
Authority

  That’s a very broad question, you’re going to have to be a bit more specific if you want to gain anything useful out of this.  But I upgraded from an XTi to a 6D, so I suppose I’ll weigh in a bit:

 

One is full frame, one is crop.  That will affect high ISO performance, field of view, and depth of field, to name a few.  It also means that your lenses from the XTi won’t necessarily fit on the 6D.  In order to take full advantage of the better sensor on the 6D you need to invest in decent glass.

 

The “crop factor” is a legitimate aspect of a camera, and it’s both good and bad.  You’ll notice a significant reduction in reach moving to a 6D, and getting that reach back can be very expensive.

 

There’s absolutely no comparison of low light performance between the two.  Different league.  I also found the color to be noticeable better on the 6D.

 

The 6D is physically bigger and heavier than the XTi.  Still smaller than most full frame and professional grade cameras, but you’ll feel the difference.  I like it, but you notice when you travel.  The lenses you need are equally bigger and heavier than the Rebel kit lenses.

 

Upgraded features like custom functions, improved bracketing, WiFi, GPS, HDR, etc.  Some may be worth something to you, some may not.  I found that I really like Auto ISO in certain situations, I would never use Auto ISO on my XTI.  In fact, I found that I now use ISO like I do aperture or shutter speed.  On my XTi I would minimize at all cost, on my 6D I have no issues at all going to 1600, and beyond in certain situations.

 

On the other hand, the 6D is heavier, more expensive, has less lens choices, less reach, less portable, requires more disk space, I worry about it more, is more noticeable on the street, etc.  There are times that I take a landscapes in good light or a travel pic or something and think “meh, my XTI could have done that”.  There are times I think “a point and shoot could have done that, why am I lugging around a big ole camera”.  There’s pros and cons to all camera choices, they’re just tools.

hsbn
Whiz
Low light performance Much lower noise at high ISO2,340 ISOvs664 ISO
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The 6D has excellent image quality 1.8 f-stops higher ISO than the Rebel XTi
 
 
Overall image quality Much better image quality82.0vs62.0
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More than 30% better image quality
 
 
Screen resolution Much higher resolution screen1,040k dotsvs230k dots
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More than 4.5x higher resolution screen
 
 
Screen size Much larger screen3.0"vs2.5"
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More than 20% larger screen
 
 
Live view Has live viewYesvsNo
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Preview your photos on the camera's screen before taking them
 
 
Dynamic range More dynamic range12.1 EVvs11 EV
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1.1 f-stops more dynamic range
 
 
Movie format Shoots movies1080p @ 30fpsvsNone
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Shoots Full HD (1080p) video as well as still pictures
 
 
Color depth Better color depth23.8 bitsvs22.1 bits
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Distinguishes 1.7 more bits of color
 
 
Viewfinder size Much larger viewfinder0.71xvs0.49x
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More than 2x larger viewfinder
 
 
Autofocus Faster autofocusPhase detectionvsContrast detection
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Catch candid moments easily
 
 
Startup delay Much less startup delay500 msvs2500 ms
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5x less delay when turning on
 
 
True resolution Much higher true resolution20.9 MPvs10.1 MP
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Capture more than 2x more detail in your photos
 
 
HDR Has in-camera HDRYesvsNo
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Combines multiple exposures to capture high dynamic range
 
 
Sensor size Much larger sensorFull frame 36.0x24.0mmvsAPS-C 22.2x14.8mm
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More than 2.5x larger sensor
 
 
Weather sealed Weather sealedYesvsNo
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Sealed to shoot in the rain
 
 
Light sensitivity Better maximum light sensitivity25,600 ISOvs1,600 ISO
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The 6D's maximum light sensitivity is 4 f-stops better
 
 
Autofocus Video autofocusContrast detectionvsNone
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Automatically focuses shooting video
 
 
Battery life Significantly longer battery life980 shotsvs370 shots
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More than 2.5x more shots per battery charge
 
 
GPS Has a GPSYesvsNo
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Automatically geotags your photos when traveling
 
 
 Has boost ISO102,400 ISOvsNone
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Allows taking photos in darker situations, often at the cost of additional noise in the image
 
 
Viewfinder Has a pentaprism viewfinderPentaprismvsPentamirror
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Pentaprism viewfinders are typically brighter
 
 
Continuous shooting Shoots faster4.5 fpsvs3 fps
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50% faster continuous shooting
 
 
Viewfinder coverage Better viewfinder coverage97%vs95%
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Almost the same

 

From here: http://snapsort.com/compare/Canon-EOS-6D-vs-Canon_EOS_Digital_Rebel_XTi

It's a great site to compare camera spec.

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