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The Sigma ring flash set on a D-SLR camera. | Download Scientific Diagram
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Sigma 65mm Macro Flash Adapter For Sigma EM-140 Macro Flash Unit (UK Stock) 85126936624 | eBay
The Nikon camera fitted with the Sigma ring flash. | Download Scientific Diagram
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Sigma EM-140 DG Macro Ringlight Flash for Sony Alpha & F30205
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