I FOUND AN EYE CUP / EYE PIECE FOR THE Sony FDRAX53 4K camcorder. https://amzn.to/3f7ruli The view finder is so hard to see in the sunlight and I show you how to install one and what I bought.
It is the Supreme Camera Eyecup DK-19 replacement eyepiece for nikon D700, D800 D4 D3S D3X D2X D2H F5 F6 Cameras Viewfinder. it works really well. I show you my Hack that I do to my hat to make a curtain to keep the sun out when I am plane spotting. Eyecup,Sedremm Camera DK-19 Eyecup Replacement Eyepiece for Nikon D700 D800 D4 D3S D3X D2X D2H F5 F6 Cameras Viewfinder, 2 Pack