dougpeterson
Workshop Member
I assume he means focus shift a la "Changes focus when changing aperture".
Really only effects ground-glass shooters. Cambo, Arca, Alpa users calibrate their system (by screw, offset, or shim respectively) using their optimum aperture and only a very small number use ground glass for focusing.
Really only effects ground-glass shooters. Cambo, Arca, Alpa users calibrate their system (by screw, offset, or shim respectively) using their optimum aperture and only a very small number use ground glass for focusing.