Using BLAM The Blender Camera Calibration Toolkit
Stuffmatic recently released BLAM Addo-On for Blender, a Camera Calibration Toolkit for Blender which allows you to match your geometry over an image to match the camera accurately. Check out the post for the release of BLAM Camera Calibration Toolkit Add-On for Blender here.
Stuffmatic writes: No Blender nerd will have missed the recent introduction of motion tracking, which provides a nice workflow for mixing video footage and 3D models. While awesome, the current motion tracking implementation is limited to video footage with significant enough camera movement and perspective shift and (as far as I know) there is currently no easy way of mixing 3D models with still images or fixed tripod shots, so I decided to put together an add-on for this purpose.