Canon DSLRs are a great way to connect to Stop Motion Pro.

Canon DSLRs can be used in the following editions:

Most new Canon DSLR cameras have "live view". This live view is a direct live video image from the camera, streamed over USB2. Stop Motion Pro interfaces with this live view and controls the camera.  Use the option, Canon DSLR, EVF assist in the Capture settings dialog when starting a new project.  Use the DOP (Director of Photography) tool to get perfect focus and exposure before filming.

These Live view Canon DSLRs are supported by Stop Motion Pro:

EOS 1 DX
EOS 1D Mark III
EOS 1D Mark IV
EOS 1Ds Mark III
EOS DIGITAL REBEL Xsi/450D/ Kiss X2
EOS DIGITAL REBEL XS/ 1000D/ KISS F
EOS 40D
EOS 50D
EOS 5D Mark II                                   Configuration information for the 5D can be found here.
EOS 5D Mark III                                  Configuration information for the 5D can be found here.
EOS 500D (Rebel T1i)
EOS 7D
EOS 550D (Rebel T2i, Kiss X4)
EOS 60D
EOS 600D (Rebel T3i, Kiss X5)  
EOS 650D (Rebel T4i, Kiss X6i)
EOS 1100D (Rebel T3, Kiss X50)  

Information on lens selection can be found here.

All the looping controls, frame editing, onionskinning and audio sync tools work with the new live view cameras. Remember to test you camera with the free trial of Stop Motion Pro to ensure compatibility. Stop Motion Pro Action! HD and Studio editions support the live view function of these cameras.

It is possible to change the resolution of the proxy image Stop Motion Pro uses to playback the animation.  Start a New project and select Canon DSLR, EVR assist as the capture source.  Open the Settings | Advanced settings dialog and adjust the Maximum proxy width to 1024.  This matches 1:1 the Live view output from Canon DSLRs. This is a 25% increase in pixel dimensions and will result in a doubling of the data rate required to playback at the correct fps (frames per second).

Non Live view cameras
Non live view cameras can be used with Stop Motion Pro.  Use the option Canon DSLR, no assist in the Capture settings dialog when starting a new project.
It is also possible to connect a "video assist", basically a webcam or video camera to give you the live view while you are working.  Use Canon DSLR, video assist in the Capture settings dialog when starting a new project.

Supported non live view Canon DSLRs
EOS 30D
EOS Kiss Digital X/400D/REBEL XTi

Shooting RAW
The video below shows using a Canon DSLR with Live view for shooting RAW files (video shows SMP v6.5, the concepts are the same): 

Some notes on shooting RAW in Stop Motion Pro v7.5:

Start a new project in SMP.
 
From the capture settings window Choose:
 
 Canon DSLR Evf assist
 
Click on the Canon Advanced tab.
 
From the size, quality drop down menu, select RAW.
 
Even if it is already selected, select it. A dialog will appear saying Update frame size? select Yes.
 
Go to the Canon DSLR tab. Leave the size as is, do not change it.
 
Set up your TV and AV exposure settings as required, click OK.
 
Shoot your animation.
 
This sets SMP to capture the full frames, and makes the capture process as quick as possible. We recommend this and do the resizing later.  Note that the preview image used for playback (not the video assist) is not the actual RAW image (which would appear very dark).  It is the proxy image generated by the camera when a RAW image is captured.  This image is smaller than the actual RAW image.  This is normal.
 
Once you have finished shooting, use the File > Export RAW frames option.
 
Resize the video in whatever application you are editing in, After effects etc.

You will see the exported RAW frames are the correct size.