Jon Clemens wrote in post #15460863
The depth of field you ended up with is impressive. And, it is a beautiful scene.
I was very impressed with the DOF that the tilt afforded. I shot this as a 5 shot exposure blend through Photoshop. I did a 5 shot sequence in f9, f11, f16, and f22 all with about a half-tilt down.
The one seen here is the f16 version. The dilemma I had was that the difference between f9 and f16, with the tilt, was that at f9 the top most stalks were noticeably out of focus, and at the very bottom, deep in the shadows, they were also slightly out of focus.
I don't know all the science but I think it is because when you tilt, the focus field is somewhat shaped like a triangle, with the vertical DOF being narrowest at the lens and getting larger as it gets farther away.
At f9, the angle at which the DOF expanded from the focal plane wasn't wide enough to get the closest objects in focus on the top and bottom of the frame, I was really considering cropping it down to avoid the f16 diffraction vs the f9 diffraction. However, I decided to take the f16 version because I the 24mm perpective is important to the image, and cropping would have reduced the impact.