The hoya pro 1 digital close up filter 3 allows closer focusing distances than your cameras lens could otherwise manage close up filters are small light easy to carry and require no exposure compensation when mounted directly on the camera lens the 3 dioptre close up filter provides a maximum subject to lens distance of 333mm with your lens focussed at infinity closer focussing distances are also possible and the minimum distance will be determined by your lens an aperture of f8 or sm