Sigma EM-140 DG Macro flash introduction : Sigma EM-140 DG Macro flash is designed to work with both AF 35mm film and Digital SLR cameras of all the popular manufactures. The Sigma EM-140 DG flash is ideal for photographing subjects in fine detail when the shadow less mode is used and is extremely effective for scientific and medical applications. Dual flash tubes can fire simultaneously or separately. Using only one flashtube creates shadow, which can give a three-dimensional feeling to the subject. The Sigma Electronic Macro flash features a guide number of 14 w/ISO 100. Sigma Electronic flash Micro EM-140 DG is fully dedicated with new TTL flash control systems of all-popular camera manufacturers.
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