To most people EOS Utility is something they never use, but they miss out on so much. Photographers working in a studio can use EOS Utility to tether the camera to a computer, pictures are sent to the computer while you shoot, you can also remote control the camera from the computer. Add in the possibility to use Live View mode and the possibilities become more interesting since the latest EOS Utility has Compose mode.
Connect your camera to the computer and start EOS Utility and select Camera settings/Remote shooting from the four options, then once the remote control window appears select the Live View shooting button to get a live preview of what the camera is seeing.
Choose the second tab for Compose, and now you can select a previously captured RAW or JPEG image to overlay over the Live View image, this is ideal if you need to align images from one shot to the next, or even if you are doing simple stop motion effects.
Using Compose gives a lot of flexibility in how the image being captured and the image already captured are presented. The stored image, in this case a RAW image, can be rotated, moved, scaled and the opacity of either layer can be readily changed. In the example above the model car that was shot before is rotated and scaled to fit in line with the keyboard. This would help with placement of the camera or in this case keyboard subject in the frame. Of course when you’ve taken the pictures you could composite the images together using Photoshop or Digital Photo Professional.
If you can’t find this feature in your current version of EOS Utility, and your camera supports Live View mode then make sure to download the latest update from Canon from http://software.canon-europe.com