Sigma EM-140 DG Macro Ring Flash for Nikon SLR Cameras
The Electronic Flash Macro EM-140 DG is designed to work with both AF 35mm film and digital SLR cameras of all popular manufacturers. It is ideal for photographing subjects in fine detail when the shadowless 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 flash features a guide number of 14 with ISO 100. The Modeling Flash function makes it possible to check for reflections and shadows before actually taking the flash picture. A wireless flash function is also available, when the EM-140 DG is used as master and the EF-500 DG Super as a slave unit for creating fine shadow details. High-speed synchro and exposure compensation functions are also available for advanced flash photography.Ideal for close-up photography, especially medical and scientific applicationsFully dedicated with the latest TTL autoexposure systemsFlash tubes can be switched on or off for creative flash controlWireless flash controlHigh-speed synchro flashGuide number of 14 (ISO 100)G/No. 46/ft, 14/m (ISO 100)Power Level1/11/21/41/81/161/321/642 tubes (ft)4633231712862 tubes (m)1410753.52.51.8Compatibility withADD MAKER HERENikon AF SLR and Digital SLR CamerasCamera-specific info hereEM140 Ring FlashNikon AFTTL 35 Film SLRTTL-BL*2*3TTL Digital SLRi-TTL, D-TTL*2*3Distance Priority Manual FlashOHigh Speed SynchroFPO*2Multi FlashOExposure Compensation Function-Modeling FlashOWireless FlashTTLO*2end Camera-specific info here"O" Available, "-" Not available*1: Compatible with E-TTL and TTL. Please note A-TTL automatic exposure is not supported.*2: This function is not supported by some camera models.*3: Compatible with 3D-multi BL exposure.*4: Manual exposure is also possible.