For about $5 you can build your own DIY Fiber Optic Camera Flash Ring. It allows you to extend the camera flash using fiber optic to illuminate your subject from many tiny points of light all around the camera lens.
"This is a fibre-optic flash extension for your DSLR’s popup flash. Totally easy! Works great! Durable! Designed specifically for K20D with 100 2.8 DFA lens but adaptable to other lenses (see Tamron Adaptall 90 2.5 example at the end.) Build your own!"
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