I have a question about the shape of the DOF plane in which objects are in focus. Is it flat or is it curved?
Let me explain my question a little better by describing what I want to do; I want to do a "little planet" shot like the one I have done here:
The thing is, I would like to do it with a larger group and a shallower DOF, so do I:
1) Line them up on the same plane by lining up on the midline of a football field
2) Have them equal distance from me by taking a length of twine and making an arc with my camera position at the radius node
My inclination is that I should line them up on the same plane because the sensor onto which I am focusing them is flat. Yes, I am aware that I know enough about optics to ask difficult questions, but not enough to solve the problem...hopefully someone will have a good answer.