The scale of a tilted photograph of focal length f taken from an altitude H, along the plate parallel through principal point is

The scale of a tilted photograph of focal length f taken from an altitude H, along the plate parallel through principal point is Correct Answer $$\frac{{\text{f}}}{{{\text{H}}\sec \theta }}$$

Related Questions

The scale of a tilted photograph of focal length f, taken from an altitude H, along the plate parallel through plumb point, is
The scale of a vertical photograph of focal length ‘f’ taken from height of ‘H’ metres above M.S.L., at a point of reduced level ‘h’, is
The relation between the air base (B), photographic base (b), flying height (H) and the focal length (f) of a vertical photograph, is