No more rain drops on your lens ““ The Tokina hydrophilic water dispersion filter reviewed1 min read
Reading Time: < 1 minuteIf you ever shoot in wet or showery conditions then this filter was designed for you. We first saw the Tokina’s hydrophilic filter back at IBC 2013 and after almost two years of waiting they are finally available to buy.
If you are not familiar with hydrophilic technology let me explain how it works;
Water-droplets on glass are formed by surface tension and adhesion. Only once the weight of a water bead exceeds this tension does it trickle down the glass. As water trickles down it leaves a trail behind. You can see this effect on a regular window every time it rains.
The coating of the hydrophilic filter is different. Water drops falling onto the surface are transformed into a thin film, instead of accumulating as beads. In the case of this filter it means that water simply runs off the surface of the glass and you don’t have to keep wiping it off.
To do this requires that the filter is “˜charged’ for several hours. Exposure to ultraviolet light sources causes a reaction that gives the filter its hydrophilic properties.
A combination of the hydrophilic and catalytic layers on the filter that not only helps disperse water but also keeps the filter free from dust and dirt.
via: News Shooter
Image Credit: Tokina
