The Sigma EM-140 DG Ring Flash is ideal for photographing subjects in fine detail - close-up photography - and is extremely effective for scientific and medical applications.
Dual flash tubes can fire simultaneously or separately. Using only one flashtube creates modeling, which can give a three-dimensional feeling to the subject. 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, where 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.
|Guide No.||46' (14.02 m) ISO100 at 50 mm position|
|Angle of Coverage||
|Vari-Power||1/1 - 1/64|
|Recycle Time||Approximately 4 - 6 seconds|
|Power Source||4x AA Alkaline, Rechargeable Ni-MH Batteries|
|Ring Dimensions (WxHxD)||5.0 x 5.1 x 1.2" / 12.7 x 13.0 x 3.0 cm|
|Power Unit Dimensions (WxHxD)||3.0 x 5.4 x 3.2" / 7.6 x 13.7 x 8.1 cm|
|Weight||15.1 oz / 428 g Without batteries|