The EF-530 DG ST flash from Sigma is designed to work with the latest traditional and digital camera TTL systems. It features a powerful number guide of 53 and sets itself automatically according to the lens’ focal length within a range from 24mm to 105mm. When the built-in angle widener is used, the EF-530 DG ST can cover the viewing angle of a 17mm focal length.
The head can be tilted up by 90°, to the left by 180°, or to the right by 90°. It can also be tilted down by 7°, allowing for ease of use for close up photography. 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 will light up 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 works with 4 batteries or AA rechargeable batteries (not included).
| Content | Use | Flash for Canon E-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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