El Sigma EM-140 DG puede trabajar como flash maestro de otras unidades Sigma, que se pueden controlar desde el propio flash. Esta opcion es muy interesante ya que nos permite un control total de la iluminacion de la escena trabajando unicamente sobre la unidad de control del EM-140 is a ring flash for macro photography with guide number 14 (at ISO 100), it can be mounted on macro lenses. The recycling time between each flash varies between 0.1 and 5.5 seconds depending by the power level and Also the new Canon models do not have drivers for this flash! Sigma MACRO EM-140 DG - ring-type (macro) flash 01790 $450.55 Sigma EM-140 DG Macro Ring Flash for Nikon AF f309306 Supported Exposure Control. i-TTL. Manual Power Control Levels. Technical Specifications Sigma's EM-140 DG Ring Flash Power: Four AA alkaline, Ni-MH, or NiCd Guide Number: 46 (ISO 100/ft) Street Price: About $350. Sigma's 50mm f/2.8 EX DG Macro Lens Minimum Aperture: f/32 (f/45 for Canon, Minolta AF) Minimum Focusing Distance N. Strobist info: Sigma EM-140 DG Macro Flash. The Toshiba discrete IGBTs are available in high-voltage and high-current ratings. They are used in inverter and power conversion circuits for such diverse applications as motor drivers, uninterruptible power supply (UPS) systems, IH cookers, plasma display panels (PDPs), strobe flashes and so on. Videography & Photography Lighting. Camera Flashes & Slaves. Macro Flashes, Ringlights & Ringflash Units. SKU: SGEM140EOS MFR: F30101. I stand corrected in the case of the Canon version (not all Canon models though), but I have just checked the manual for the Nikon version and it does not allow proportional flash for any model. So to sum up, if you have a Canon the EM-140 could be an option, if a Nikon I wouldn't bother! EM-140 DG Ring Flash for Canon EOS this week mainly because it was going relatively cheaply and I needed a TTL macro flash for my Canon kit but Unfortunately, Sigma's website doesn't explain the realities with this flash, and worse, does not allow a download of its user manual so you can 11 members have added this flash to their gear list. (log in to see the list) It has been wished for by no one at the moment. Sigma (sigma-photo.com). GENRE: Ring/Macro. Note: full specs are being added to the database. This will take some time. Sigma EM-140 DG Macro Flash -makrosalama (Nikon). out of stock. 1 result for "sigma-em-140-dg-macro-ring-flash-for-nikon". Sigma EM-140 DG EO-ETTL Macro Flash For Canon SLR Cameras. 1 result for "sigma-em-140-dg-macro-ring-flash-for-nikon". Sigma EM-140 DG EO-ETTL Macro Flash For Canon SLR Cameras. 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