As a photographer that shoots both film and digital, I think the trick to retro images may actually be in the lens ...

The Anamorphic Lens Mod includes a water repellent coating, but GoPro notes that the lens mod isn’t meant to go underwater ...

If further correction is required, which is probably unlikely for most photography ... giving a perfect backdrop to portraiture. Flare, as befits a lens that might well be used at night, is ...