Title: Center Spot Bicolor
Product review: These filters have a clear spot in the center which has nofilter effect. This means that the subject in the center of thepicture is reproduced clearly while the surrounding area which isoften distracting is changed, usually colored or darkened. The mainarea of use is for portraits. The transition from subject tobackground, and also the size of the clear circular area, depend onfocal length and aperture. The transition is more gradual when theaperture is opened wider. The circle becomes larger as focal length isincreased. The circle becomes larger and less clearly defined if thefilter is placed further forward. The distance between your lens andthe Center Spot filter can be varied by using the Cokin Modular Hoodand a Coupling ring .The Bicolor filters are not symmetricallycolored, and different effects can be obtained with the same filterjust by rotating the filter holder...
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