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Sigma EM-140 DG Macro flash introduction
Dennis Hissink : February 4th 2005 - 10:15 CET
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SigmaSigma EM-140 DG Macro flash introduction : Sigma EM-140 DG Macro flash is designed to work with both AF 35mm film and Digital SLR cameras of all the popular manufactures. The Sigma EM-140 DG flash is ideal for photographing subjects in fine detail when the shadow less 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 Sigma Electronic Macro flash features a guide number of 14 w/ISO 100. Sigma Electronic flash Micro EM-140 DG is fully dedicated with new TTL flash control systems of all-popular camera manufacturers.
Sigma EM-140 DG Macro flash introductionSigma macro flash adapter
Automatic functions of this flashgun deliver outstanding results and creative possibilities. Macro flash Adapter in many different sizes: 55mm, 58mm Macro flash Ring Adapters are provided with this flash unit, 52mm, 62mm, 72mm and 77mm ring adapters can be purchased separately. These Sigma Macro Ring flash Adapters in many different sizes make it possible to attach this flashgun to a wide variety of lenses.

Sigma wireless flash function
For giving three dimensional feeling to the subject in the picture or lighting of background, side-light, top-light, etc., it is possible to use wireless flash Sigma EF-500 DG SUPER separated from the camera. Flash tubes can fire together or independently for a wide range of lighting variations. When shadow less mode is used subjects can be photographed in fine detail, this can be done by firing both flashtubes. Using only one flashtube creates shadow, which can give a three-dimensional feeling to the subject.

Sigma EM-140 DG Macro flash - Exposure compensation
Exposure compensation function delivers outstanding creative possibilities for precisely reflecting the photographer’s intention. The subject's delicate textures, its reflectivity as well as background, and light balance, etc. can be adjusted finely. High Speed Sync allows using a shutter speed faster than the shutter's normal synchronized speed.

Sigma EM-140 DG Macro flash - Modelling flash function
The modelling flash allows for checking shadows and light balance on the subject prior to shooting. Guide Number 14 ISO 100/m (when the flash is fired at full power) Power Level 1/1 1/2 1/4 1/8 1/16 1/32 1/64 - 1tube-2tubes 14 10 7 5 3.5 2.5 1.8)

Sigma EM-140 DG Macro flash specifications:
- Power Source AA Alkaline Battery or AA NiCd Battery or AA NiMH Battery x 4pcs
- Angle of Coverage Vertical / Horizontal 80 degrees
- Weight 430g (without batteries)
- Dimensions (Controller) 76.7mmX136.2mmX82.4mm (3.0x5.4x3.2in.)
- Dimensions (Flash Unit) 126.6mmX128.8mmX30.5mm (5.0x5.1x1.2in.)
- Compatible cameras SA-STTL (Sigma), EO-ETTL (Canon), MA-ADI (Minolta), NA-iTTL (Nikon), PA-PTTL (Pentax).

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