Sigma EF-500 ST - DG Shoe Mount Flash for Nikon AF -D, Guide Number of 165 feet / 50 meter at 105mm Setting.
SKU: SG500STNKDG MFR: 159306
Sigma EF-610 DG Super Shoe Mount Flash for Nikon iTTL Digital SLR's, Guide Number 200' at 105mm Setting.
SKU: SG610NK
MFR: F18306
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Sigma EF-610 DG ST Shoe Mount Flash for Nikon iTTL Digital SLR's, Guide Number 200' at 105mm Setting.
SKU: SG610STNK
MFR: F19306
