STC Aqua-Red Underwater Fader Filter

When takingunderwater photography, the light you are recording is filtered by the water itpasses through. Longer wavelength reds and oranges are absorbed, it left onlyblue until 33 ft. deep. STC Aqua-Red Underwater

Fader adoptspolarizing film and rotated mechanism to adjust the spectrum of shorterwavelength greens and blues at different depth or water path. The design ofpressure relief hole can allow drainage of liquid or air, and also it’savailable to separate the fader for cleaning. In addition, STC Ultra Layer®coating technology allows filters to be boiled 90 minutes in 3% salty water at70°C, the filter is durable and easily cleaning even in such criticalenvironment.

Feature：

Made byGerman Schott® B270 optical crown glass and Anti-erosion polarizing film. Tethickness of each glass is 1.6mm.

Step-lessvolume fader control from water surface to 18m deep.

Correct thecolor on camera image shooting underwater.

The design ofpressure relief hole can allow drainage of liquid or air.

STCUnderwater Fader is available to separate for cleaning.

STC UltraLayer® coating technology allows filters to be boiled 90 minutes in 3% saltywater at 70°C.

Double-sidedAnti-reflection coating reduces lens flare effect.

Antistaticcoating makes the glass easy to keep clean.

Teflon-coatedknurled thread is easy to install or remove from your lens.

Specification：

Availablesize：67mm,77mm

Material：SCHOTTB270 optical glass，Japanese Nitto polarizing film

Thickness：1.6mmglass x 2，910mm rim（includingscrew thread）

Weight：40g(Ø:67mm)

Water dropcontact angle：>110 degree

Multiplecoating：2 glasses, both-sided, total 36 layers

Origin：Taiwan