Polarizer

Kenko PRO1D C-PL Wideband 77 mm 300i

1 day:	300i
from 3 days:	270i
from 14 days:	225i
from 30 days:	210i
from 6 days:	210i

Marumi MC CPL-67 mm 300i

1 day:	300i
from 3 days:	270i
from 14 days:	225i
from 30 days:	210i
from 6 days:	210i

Hoya PL-CIR TEC SLIM 58mm 300i

1 day:	300i
from 3 days:	270i
from 14 days:	225i
from 30 days:	210i
from 6 days:	210i

Hoya PL CIR HD 72 mm 300i

1 day:	300i
from 3 days:	270i
from 14 days:	225i
from 30 days:	210i
from 6 days:	210i

What is it and why is it necessary?

Here are polarizing filters

A polarizing filter or polarising filter is often placed in front of the camera lens in photography in order to darken skies, manage reflections, or suppress glare from the surface of lakes or the sea. Since reflections (and sky-light) tend to be at least partially linearly-polarized, a linear polarizer can be used to change the balance of the light in the photograph.

Polarizer

Kenko PRO1D C-PL Wideband 77 mm 300i

Marumi DHG Super Circular PL(D) 62 mm 300i

Marumi MC CPL-67 mm 300i

Hoya Circular Polarizing Pro1 Digital 77 mm 300i

Hoya PL-CIR TEC SLIM 58mm 300i

Hoya PL CIR HD 72 mm 300i

Tiffen Polarizer 82 mm 300i

Tiffen Wide Angle Circular Polarizer 72 mm 300i

What is it and why is it necessary?

Description