K&F Concept 67mm Universal Phone Filter Clamp (KF31.142)

The K&F Concept 67mm Universal Phone Filter Clamp lets you use a real 67mm glass filter on a phone. Clip it over the handset, line the thread up with the lens, and screw on any 67mm ND, CPL or mist filter.

For phone video this is the cheapest route to a proper shutter angle in daylight and to real polarization — two things no computational mode reproduces convincingly.

The jaws are padded and open wide enough to clamp over a case, and the mount is universal rather than tied to one phone model, so it survives your next upgrade.