https://petapixel.com/2018/10/03/these-camera-hotshoe-covers-double-as-film-speed-reminders/
These Camera Hot Shoe Covers Double as Film Speed Reminders | PetaPixel
Feb 14, 2023 - Amateur photographer Guy Sie of The Netherlands needed a better way of remembering what film speed he has loaded into his camera, so he created custom
camera hot shoe covers