Yes that system only calculates your bellows factor only.
Originally Posted by Q.G.
The OP also needs to calibrate the aperture scale of the new lens irrespective of the bellows factor. There are many threads on making f-stop scales, but it involves measuring the the empiric derived focal length (obtained with 'Cheetos' or by other means) http://www.apug.org/forums/forum44/5...h-my-lens.html and dividing by the observed entrance pupil in millimeter to get various f-numbers.
Last edited by ic-racer; 09-25-2010 at 11:27 AM. Click to view previous post history.