Sony FDA-EP10 eyepiece (works for NEX) with anatomic cutout

thingiverse

The original design stays remarkably true to Sony's iconic look, but when printed in PLA, it was unfortunately quite uncomfortable for me. I took matters into my own hands and accessed an anatomically accurate surface model that I used to refine the print with, thereby creating a more ergonomic eyepiece shape. I've been using this revised design for over a year now without encountering any major problems or issues.