Adjustable highly efcient optical system with four guillotine-type shaping lamellas that can be adjusted and a removable mask. ZEN COMPACT page 332 NIO page 344 M4 page 372 MUSEO COMPACT page 406 SHAPER 26W 9Q 311 52 26-33W 9Q 311 52 26W 9Q 311 52 26W 9Q 311 52