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Create light around your subject or augment existing light with the VS-570C Wireless TTL Flash from Bolt. Available here to be fully compatible with Canon's E-TTL / E-TTL II, including use as a wireless master or slave TTL flash, the VS-570C allows photographers to work quickly and comfortably by knowing that settings can be easily determined with the camera's automatic metering system. This unit also has good power output with a guide number of 141' at ISO 100 and 50mm and can cover a range of focal lengths from 24-105mm using the zoom head, or as wide as 18mm with the pull-out diffusion panel. You can even control output manually with power settings from 1/1 to 1/64.
In addition to wireless TTL, the VS-570C can be set up as a manual master with an optical pulse that features a range of 33' or a simple optical slave. Multiple sync modes are available for complete control over your images, including high-speed sync and both 1st and 2nd curtain sync settings. The flash also has a recycle time of 0.5-9 seconds and can run on either 4 AA batteries or an external power pack, thanks to the inclusion of an HV power port. And, for basic off-camera use it has a standard PC sync terminal.
Compatible with Canon E-TTL / E-TTL II
Guide number of 141' at ISO 100 and 50mm position
Zoom head offers coverage of 24-105mm on full-frame sensors with the ability to cover 18mm when the pull-out diffusion panel is used
Manual power control from 1/1 to 1/64
Tilts upward 90° and rotates right 120° and left 180°
Built-in reflector panel can bounce some light forward when the flash is tilted to fill in shadows and create catchlights
1.8" backlit LCD screen
AF assist light for working in dim lighting conditions
The flash can be set up as a wireless master or slave TTL flash unit
In addition to use as an optical slave the VS-570C can be set up as a slave TTL unit for Canon or Nikon systems
Wireless transmission for manual master and slave modes uses an optical pulse method with 33' range
Access to 4 wireless channels and 3 groups
Ratio group control settings of ABC, A:B, and A:B+C
Optical slave timing modes include instant sync, skip one pre-flash, and skip two pre-flashes