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ExpoImaging Ray Flash - Ring Flash Adapter for Canon 580EX II Used with 5D/40D/

Product Description :
Unique lighting effect can be used for a variety of applications as a main light or fill-in
Produces virtually no shadows on the front of the subject with soft shadow around the edge
Fits securely to the front of standard flash unit
Contains no electronics or flashtubes -- no extra batteries needed
All normal flash operating functions and color temperature are maintained