Light-shielding: Can play a light-shielding role, act as a small sun hood, shooting better.
Lenses are embedded in the middle to prevent dust and fingerprints from sticking, making it easier to mount and no worry about touching the lenses.
Aluminum frame, effectively protect the lens. High-precision laser laser, knurled anti-skid.
Precision thread, more stable installation.
Does not affect the self-test and panoramic shot.