These filters are made out of high-quality optical glass in which the surface is etched with a fine grid pattern. Depending on the pattern and size of the grid, point light sources and reflections create multi-beam stars. The grid structure of this attachment is designed so that a 4-point star is created from point light sources and reflections. The mount turns to allow the photographer the freedom to decide the orientation of the star effect.
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Comments about B+W 72mm 4x Cross Screen 684 Star Effect Glass Filter:
Wedding photography, unity candles, etc. I like that the axis can be rotated to move the angle of the star, but I wish it was a little easier to screw off and on. That operation is a little akward when you are trying to be smooth and graceful at a wedding.
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