Nikon 16mm Fisheye Lens Cap

This is a lens cap for the Nikon 16mm F2.8D fisheye lens. If you've lost your original lens cap or find it too loose, you might consider 3D printing one.

I used PETG to print this product. If you want to try other materials, I've made the inner ring part (as shown in Figure 4) separately for easy fine-tuning.

Note, I do not recommend using any materials with a GF suffix, as they may scratch the lens's paint!!!