I am an intermediate photographer and I want to shoot some models in a cityscape. I want to frame my shots on my laptop and then shoot the image. How can I do this. Do I need any specific software? FYI, I'm shooting with a Canon 450D.
The feature you're looking for is known as "tethering." There is a lot of software support for tethered shooting, including Canon's own EOS utility and others.
Your camera should have come with some software, which is includes the EOS Utility. This software allows a canon camera to be connected, via USB to the computer. Live view is possible. With the camera on and connected to the computer, the program will automatically detect the connection.
- ability to save to camera and computer
- live view
- ability to control exposure etc.
- interval shooting
You could use Adobe lightroom for tethering. Supporter cameras https://helpx.adobe.com/lightroom/kb/tethered-camera-support-lightroom-4.html