The EF-530 DG ST flash from Sigma is designed to work with the latest traditional and digital camera TTL systems. It has a powerful guide number of 53, and is eqiupped with a zoom head to adapt the lighting angle to the focal length of the lens (from 24 mm to 105 mm). When the built-in angle widener is used, the EF-530 DG ST can cover the viewing angle of a 17 mm focal length. The head can be tilted up 90°, to the left 180° and to the right 90°. It can also be tilted down 7° for taking close-ups. In addition to its automatic mode, the EF-530 DG ST has a manual flash mode, making it possible to set the flash power level to full or 1/16. When the flash is fully charged, a confirmation light is activated, and the flash exposure level can be checked through the camera’s viewfinder. The EF-530 DG ST also comes with an Auto Power Off function that helps save on battery power.
This flash runs on 4 batteries or AA rechargeable batteries (not included).
| Content | Use | Flash for Sony P-TTL standard cameras |
| Guide number (for ISO 100) | 53 | |
| TTL | Yes | |
| Coverage | Coverage for focal distances of 24 to 105 mm | |
| E-TTL measure | Yes | |
| A-TTL Measure | No | |
| Function | Automatic zoom head that optimises lighting intensity Built-in angular wide diffuser covering an angle equivalent to the 17 mm focal length Possible position: 90° upwards, 180° to the left and 90° to the right Possible lowering of up to 7° towards the bottom Manual mode with adjustment of flash in full power or 1/16 |
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| Power source | 4 alkaline AA batteries (for 220 flashes) or 4 AA NiCd or Ni-MH batteries (for 100 flashes) | |
| Size (mm) | 77 x 139 x 117 | |
| Weight (g) | 305 | |
| Included accessories | Information not provided | |
| Other | Automatic shut off Flash charging light indicator |
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