Disparity and depth in stereo vision

WHAT IT TESTS: the inverse relationship between disparity and depth. ANSWER OUTLINE: in a rectified stereo pair, a scene point projects to slightly different horizontal positions in the two images; disparity is that horizontal difference. Depth is inversely proportional to disparity: depth equals focal length times baseline divided by disparity. So near objects have large disparity and far objects small disparity, and zero disparity means infinitely far. RED FLAG: stating depth grows with disparity or omitting baseline and focal length.