Hoya 67mm HMC Close-Up Filter Set II (+1, +2, and +4) Pro Co Sound MIDI-50 they are considered 3-in-1

they are considered 3-in-1

ActionSampler Booklet

This connector offers a nickel housing

while delivering consistently high performance in any 2-channel or multi-channel system enviroment

Hoya 67mm HMC Close-Up Filter Set II (+1, +2, and +4) Pro Co Sound MIDI-50 they are considered 3-in-1Creates Macro Effect Decreases Minimum Focus Distance +1, +2, and +4 Diopter Strengths Multi Coated Optical Glass Construction 67mm Front Filter Threads Aluminum Alloy Filter Ring Filter Pouch This Hoya 67mm HMC Close Up Filter Set II offers the ability to achieve macro like results with camera lenses that have 67mm front filter threads. A close up filter is a magnifier that optically decreases the focal length of a camera lens placed behind it. This