FDA-EP18 Eye Cup for Sony A7 A7R A7S A7II A7RII A7SII A7III A7RIII A7SIII A9 A9I
Also compatible with FDA-EP18 Viewfinder Eye Cup Eyepiece Eyecup FDAEP18 for A7M4 A7M3 A7III A7R2 A7R3 A7R4 A7RIV A7RM3 A7A58 A99M2 for A7M4 A7M3 A7III. Block out unwanted light from your viewfinder.