Camera Eyecup Viewfinder Eyepiece Eye Cup For Fuji Fujifilm XT1-4 GFX100 GFX#DT
And it also protects your glasses from scratches. Blocks stray light from entering the viewfinder. Protects viewfinder from impact and scratches effectively. Fujifilm EC-XT L, EC-XT M, EC-XT S, EC-GFX and EC-XH W.