K&F Concept 100 mm Square Filter Holder with 8 Adapter Rings 49–82 mm

K&F Concept holder for 100 mm-wide square filters, with eight adapter rings from 49 to 82 mm. The body is milled in one piece from aviation aluminium and finished in matt black anodising.

• Two slots for 100 mm filters, 2 mm thick
• No dark corners from 14 mm focal length

An adapter ring of the matching thread is screwed onto the lens — the pack holds eight, 49, 52, 58, 62, 67, 72, 77 and 82 mm — and the holder goes onto it from the front. One holder thus serves almost every lens in the bag. The orange locking screw secures it on the ring so it neither wobbles nor turns while you work.

Two filters at once

The two slots take 100 mm-wide, 2 mm-thick filters, an ND and a graduated filter at once, for example. The 92 mm opening and low frame allow the holder to be used even on wide-angle lenses from 14 mm without dark corners appearing.

No light from the side

A black foam strip between filter and frame absorbs light and stops it reaching the lens from the side — otherwise a veil could appear in long exposures with an ND filter. The holder’s nuts are copper with black nickel plating, so they last and do not reflect light.