Sigma EM-140 DG Ring Flash (Canon)

SigmaSKU: 29837

Sale price$623.04

Product Description

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 flash tube 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.


  • Fully dedicated with E-TTL II Canon EOS cameras (A-TTL not supported)
  • Wireless TTL flash control (4 channels), with Manual Exposure possible
  • High-Speed Synchro flash
  • Stroboscopic effect (power level and frequency customizable)
  • Modeling light, also provides AF assist
  • Backlight illuminated LCD panel


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 Canon E-TTL / E-TTL II
Power Range 1/1 to 1/64
Secondary Illumination None
Internal Power 4 x AA
Mount 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)
Weight 15.1 oz / 428.1 g (without Batteries)

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