No, the center of the filter is clear glass, allowing your camera's autofocus system to track the subject normally without interference.
Yes, you can use step-up or step-down rings to adapt the 77mm filter to lenses with different diameters, such as 58mm, 67mm, or 82mm.
It performs best on focal lengths between 35mm and 85mm. On wider lenses, the physical edges of the filter may become visible in the frame.
Yes, the rotating frame allows you to orient the split effect horizontally, vertically, or at any angle to suit your composition.