Sigma EM-140 DG Macro Ring Flash

Sigma EM-140 DG Macro Ring Flash
Regular price 1,965.00


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 functions are also available for advanced flash photography.

  • Fully dedicated with E-TTL with Canon/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
Technical Specs


Guide Number

46' / 14.02 m at ISO 100 (50 mm Position)

Angle of Coverage

80° Horizontal
80° Vertical

Recycle Time

Approx. 4 to 6 Seconds

Exposure Control


Power Range

1/1 to 1/64

Secondary Illumination



Internal Power

4 x AA



Shoe Mount (Controller), Lens Mount (Flash)

Lens Compatibility

55mm/62mm Filter Threads (via Included Adapter Ring)
52mm/58mm/67mm/72mm/77mm Filter Threads (via Optional Adapter Ring)

Dimensions (W x H x D)

3.0 x 5.4 x 3.2" / 7.6 x 13.7 x 8.1 cm (Controller)
5.0 x 5.1 x 1.2" / 12.7 x 13.0 x 3.0 cm (Ring)


15.1 oz / 428.1 g (without Batteries)