About the Sigma EM-140 Flash Macro DG For Nikon

The Sigma EM-140 DG Ring Flash for Nikon AF cameras 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 functions are also available for advanced flash photography.

55mm and 58mm adapter rings are included with the flash; 52mm, 62mm, 67mm, 72mm and 77mm adapters are sold separately.

Fully dedicated with i-TTL/D-TTL with Nikon photo or Digital cameras

Wireless TTL flash control (4 channels)

High Speed Synchro flash

Stroboscopic effect (power level and frequency customizable)

Modeling light, also provides AF assist

Backlight illuminated LCD panel

Guide No.	46' (14 m)
Number of Flashes	Not Specified by Manufacturer
Max Usable Diameter Size	77mm
Modeling Light	Yes
Angle of Coverage	80 degree (vertical/horizontal)
Auto f/Stops	No
Vari-Power	Yes; Full, 1/2, 1/4, 1/8, 1/16, 1/32 & 1/64
TTL Dedication	Yes; i-TTL, D-TTL
Recycle Time	6 seconds with alkaline batteries 4 seconds with NiMH batteries
Power Source	4 AA batteries
Dimensions	Controller: 5.4 x 3.2 x 6.7" (73 x 136 x 82.5mm) Light unit: 5 x 5.1 x 1.2" (127 x 129 x 30.5mm)
Weight	15.1 oz (430 g) [without batteries]