Eric Coughlin
Veteran
I often work that way. With interviews, for example, I do my wide shot around F/2-F/2.8 and do my tight shot on b-cam around F/4-F/5.6.I've wondered in the past if any DP has shot in a manner that maintains DoF between shots regardless of focal length, altering the f-stop to counter the DoF resulting from focal length. In other words, shoot your wides at f/4 but your tights at f/8 or greater ( smaller ) in order to have the same Dof on a tele-photo shot as on the wides. The same DoF throughout regardless of focal length. This goes against the standard practice of shooting everything at the same stop and letting the DoF fall where it may. Here the aperture would be a slave to the desired DoF rather than the DoF being a slave to the aperture.
Is that last bit making any sense as written?
I never understood the point of maintaining a consistent T-stop throughout a film.