Still patiently learning to use a view camera.
So, a little bit ago, tired of the weather, I decided to shoot an onion. OK, it is a phase I am going through, a whole produce obsession The relevant pic is:
When I attempted to use tilt using the increasing tilt method (focus point1, tilt for point 2, refocus for point 1, repeat) the tilt just kept increasing and increasing until I reached the limits of front tilt, a considerable amount on the Super Cambo I was using. In each iteration, it only seemed to get worse, i.e. point 1 would be further out of focus then the last iteration. I have used this method successfully on landscape. The two points were the tip of the sprout and the base of the sprout.
It is difficult, with the camera pointed down and the onion at an angle, to determine what exact plane the two points occupied relative to the camera.
Where did I go wrong? Did I attempt to apply tilt when none was required; swing, perhaps? Or did I possibly pick the two points in the wrong order?
I guess I am asking how you diagnose when the iterative tilt adjustment method does not converge.