I am new to the concept of camera calibration and trying to understand the theoretical concept. My question is why should I move my targets at different orientation in space. What if, I just fix my calibration target and just move the camera in X and Y direction without any tilt across the entire image space.
I tried this approach and got an average reprojection error of 0.5. I was wondering if this result is valid or is it really necessary to tilt the camera and take more data?
I am really sorry if its a lame question. This is the first time I am doing camera calibration