Samyang 8mm fisheye lens cap

thingiverse

When I bought my second hand fisheye lens it was missing a lens cap. The coating on these lenses are very sensitive and get scratched by pretty much everything and also the front element is bulging out quite a lot so I needed a lens cap. This cap fits well but I had to give it quite a lot of tolerance for it to fit in the second try. If your printer is more accurate than the one I used it may be too loose. Try changing horizontal expansion in that case. Other than that there is not much going about it, it functions. Exact model of my lens is Samyang 8mm f2.8 UMC Fısh--Eye II. The one I got is dropped and has a crack on it that was taped by the first owner but it is still very sharp and works like a champ.