The Tiffen 77mm Multicoated UVP MCS Filter utilizes magnetic power for lightning-fast installation and removal. Its Magnetic Control System features a precision-machined metal adaptor that threads onto the lens front, allowing the filter to magnetically snap into place with a secure, non-threaded lock. No tools or lens modifications are required. Combined with Tiffen's ColourCore glass, this UV filter reduces atmospheric haze and provides consistent front-element protection during professional use.