tracer bullet wrote in post #5090301
Focus is in a plane, so - DOF would be a range more like "not unacceptably less sharp" than the focal plane, and not really "as sharp" as the focal plane.
Although that's being really picky. In general terms I like to remember, what you said is fine.
Focus is in a plane, so - DOF would be a range more like "not unacceptably less sharp" than the focal plane, and not really "as sharp" as the focal plane.
Although that's being really picky. In general terms I like to remember, what you said is fine.
Except... that the focal plane isn't necessarily a plane! The shape of the focal surface depends on the degree of correction of the lens.
Just picking another nit 
Anyone want to pick on me now? 
