Used Marumi DHG Achromat Macro 200 (+5) 77mm Close Up Lens Filter

Allows close-up shooting, as the minimum object distance can be shortened. Chromatic aberration on periphery is also reduced by using multiple lenses.

Blackened outer rim of glass
Minimizes internal reflection to reduce flare and ghosting.

Dynamic coating
Reduces reflection further by increasing coating layers.

Satin finish
Matte coating minimizes reflection.

Lens cap and hood attachable
Lens cap and hood can be attached.

Achromatic lenses
These are designed to control the amount of chromatic and spherical aberration