Filters—the type you hold between fingers for placing in front of a lens—have been in retreat since in-camera digital effects began offering more choices than a diner menu. Still, there is something refreshing about a snap-on dial for an iPhone 4 or 4S that lets you rotate a selection of filters and lenses.
Not long ago, filters were part and parcel of any worthwhile camera system. If you wanted to warm up the palette of a dreary day, you used a filter. Ditto for converting daylight to tungsten light, tungsten to daylight, and daylight to (or from) fluorescent lights.
With the exception of the filters used for black-and-white photography (see the article Black & White Landscape Photography) the numbers of filters used for capturing color landscapes are few, mostly due to the fact that, in digital imaging, many white balance and filter effects can be addressed in camera.
The Bokeh Masters Kit contains 21 pre-cut circular templates that enable you to add unique and playful shapes to the out-of-focus highlights in your photographs, especially when used with point light sources such as street lights, spot lights and candles.