Hoya HD 77mm CPL

its not that thick actually , i added 72mm-77mm step up ring

77mm hoya hd cpl on the left, 72mm pro1d cpl on the right

my own recorded home made video testing on the coating. very little finger print marks , easy to wipe. excellent coating i must say. I dont dare to knock it though...

other video

Neutral Density filter VS polariser filter

A bit into photography these days.

Here is the two main filter photographer uses and their difference

Neutral density

http://singhray.blogspot.com/2006/10/from-archive-using-graduated-neutral.html

Polariser

http://www.luminous-landscape.com/tutorials/polarizers.shtml

*main usage is for reflection and glare

*use polarise during the day , take it out at night because...

*polariser reduce F stop by 1.5