Bolt VS-570C User Manual
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Bolt VS-570C User Manual

Wireless ttl flash
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VS-570C for Canon
WIRELESS TTL FLASH
User's Manual

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Summary of Contents for Bolt VS-570C

  • Page 1 Inspiration strikes Inspiration strikes VS-570C for Canon WIRELESS TTL FLASH User’s Manual...
  • Page 2 Copyright © 2015 Gradus Group. Bolt and other names of Bolt products are trademarks of Gradus Group. Other product and corporate names mentioned herein are trademarks of their respective holders.
  • Page 3 Introduction Thank you for choosing the Bolt VS-570C Wireless TTL Flash. This advanced digital flash unit puts creative control in your hands with a broad range of automatic and manual features. It can be used as both an on- camera flash and an optical wireless master or slave. Among the benefits you’ll enjoy: •...

  • Page 4: Table Of Contents

    Contents Overview ..............................6–9 Warnings ..............................10–12 Installing Batteries ........................... 12–14 Mounting the Flash ..........................14–16 Turning on the Flash and Firing a Test ......................16 Extended Interface ............................17 Using the Automatic TTL Flash Mode ....................... 18–19 Using High-Speed Sync ........................... 19–20 Locking Flash Exposure ...........................
  • Page 5 Using Your VS-570C as a Wireless Master or Slave ................... 31–32 Using Your VS-570C as a Wireless Master ....................32–35 TTL Master Setup ............................36 Choose the Group mode..........................37-39 Manual Master Setup ..........................40-41 Choose the Group mode..........................41-43 Master Summary Screen ..........................44-47 Using Your VS-570C as a Wireless TTL Slave .....................48-49...
  • Page 6 Overview...

  • Page 7: Overview

    Overview Flash head 15. Flash head position indicator Reflector panel 16. LCD Diffuser panel 17. External power socket Battery compartment cover 18. PC sync socket Wireless sensor (optical) 19. Firmware upgrade socket Mounting foot 20. AF assist / Wireless ready Mounting foot lock indicator light Mode button...
  • Page 8 GROUP A GROUP B GROUP C Overview...
  • Page 9 Wireless TTL Master Settings 21. High-speed sync 22. Slave mode 23. TTL mode 24. Wireless TTL mode 25. Manual mode 26. Manual flash output / Slave channel 27. Slave group 28. Zoom mode 29. Zoom position 30. Flash compensation value 31.

  • Page 10: Warnings

    Warnings Before using your VS-570C, please read the following safety notices carefully and thoroughly to ensure safe use, and to help prevent damage to your flash or injury to yourself or others. • Do not fire the flash at close range directly into the eyes of people or animals. This can cause damage to the retina and may even lead to blindness.
  • Page 11 Take the product to an authorized service center for repair. • Do not drop or otherwise cause a strong physical impact to the VS-570C, as this could cause a malfunction that may cause it to explode or ignite.

  • Page 12: Installing Batteries

    • Keep the metal contacts in the battery compartment clean and free of corrosion and dirt. Do not touch them with your fingers. Corrosive elements on the contacts can damage the VS-570C and prevent it from functioning properly. Contacts may be cleaned with isopropyl alcohol on a cotton swab.
  • Page 13 To install batteries, make sure the VS-570C is turned off and follow these steps: Press on the battery compartment cover and slide it in the direction of the arrow to remove it. Insert batteries in the orientations indicated by the illustration inside the compartment.

  • Page 14: Mounting The Flash

    Mounting the Flash To mount the flash on your camera, make sure the VS-570C is turned off and follow these steps: Turn the mounting foot lock counterclockwise to loosen it. Slide the mounting foot all the way into your camera’s hot shoe.
  • Page 15 Do not overtighten. To dismount the flash from your camera, make sure the VS-570C is turned off and follow these steps: Turn the mounting foot lock counterclockwise to loosen it. Slide the mounting foot out of your camera’s hot shoe.

  • Page 16: Turning On The Flash And Firing A Test

    Mounting the VS-570C on the included stand: You can mount the VS-570C on the included stand in the same way you would mount it on your camera. This allows you to set the flash up on a flat surface or to attach it to a tripod head, light stand, or clamp that has a compatible 1/4"-20 screw mount.

  • Page 17: Extended Interface

    Extended Interface You can connect your VS-570C to an external power source or PC sync via the extended interface on the side of the flash. External power source: An external power source, such as the Bolt Cyclone Battery Pack, can greatly increase the battery life of your flash and reduce the recycle time in between flashes.

  • Page 18: Using The Automatic Ttl Flash Mode

    Using the Automatic TTL Flash Mode When the VS-570C is mounted on a compatible camera, it can set the appropriate flash level automatically, in conjunction with the camera’s through-the-lens (TTL) metering system. To use the automatic mode, mount the flash on the camera and follow these steps: Each time you turn the flash on, it will be in automatic mode.

  • Page 19: Using High-Speed Sync

    Note: The aperture setting may not appear with all cameras. Using High-Speed Sync You can use shutter speeds higher than your camera’s top flash sync speed with the VS-570C by activating high-speed sync in automatic TTL mode. High-speed sync lets you use shutter speeds as fast as 1/8000 second.

  • Page 20: Locking Flash Exposure

    To activate high-speed sync mode on the VS-570C, press the Mode button repeatedly to cycle through the flash modes until the high-speed sync mode indicator appears on the LCD. To turn high-speed sync on or off, press the up or down buttons. “On” will appear in the top right corner of the LCD when high-speed sync mode is activated, and “--”...

  • Page 21: Using Flash Exposure Compensation

    For more information about the flash exposure lock feature, consult your camera’s manual. Using Flash Exposure Compensation In automatic TTL mode, you can use flash exposure compensation to adjust the VS-570C’s flash output incrementally, just as you would adjust exposure with the exposure compensation function on your camera.

  • Page 22: Using The Manual Flash Mode

    Using the Manual Flash Mode You can also set the VS-570C’s flash output level manually for greater creative control over your images. Seven manual settings are available: 1/1, 1/2, 1/4, 1/8, 1/16, 1/32, and 1/64. The 1/1 setting is the full-power flash, and each successive setting halves the light output.

  • Page 23: Controlling Flash Coverage (Zoom)

    The flash will automatically shut off if it gets overheated. Controlling Flash Coverage (Zoom) The VS-570C’s angle of coverage can be adjusted (“zoomed”) to match the focal length of your lens, so that your image is evenly illuminated from edge to edge.
  • Page 24 The available zoom positions are 24mm, 28mm, 35mm, 50mm, 70mm, 85mm, and 105mm. Automatic zoom control: When you turn the VS-570C on, the zoom mode indicator on the LCD will show an A to indicate that it is in automatic mode and at the default 35mm position. When you press the shutter-release button on your camera halfway to initiate communication between the camera and the flash, the flash zoom will adjust to match the lens focal length and the closest zoom setting will be displayed on the LCD.
  • Page 25 Manual zoom control: To manually select a setting that corresponds to the focal length of your lens, press the Zoom button to make the M indicator for manual mode appear. Then continue to press the button to cycle through the available focal length settings. Note: Manual zoom can also be used to achieve special effects, such as using the 105mm setting with a wide- angle lens to produce a vignette.

  • Page 26: Using The Autofocus-Assist Light

    Camera autofocus systems can have difficulty locking onto a subject in dim light. When the ambient light level is low, the VS-570C will emit a red autofocus-assist beam when you press your camera’s shutter-release button halfway to autofocus. The camera will then be able to autofocus by locking onto the projected light.

  • Page 27: Bouncing Your Flash

    The light will bounce off of the larger surface before striking your subject to provide softer, more natural illumination. The VS-570C flash head can be tilted up at 45°, 60°, 75°, and 90°...
  • Page 28 When bouncing your flash, you may need to adjust your exposure settings, since the level of light falling on your subject will be reduced. The farther away the bounce surface and your subject are, the more illumination will be reduced. Tip: Bouncing your flash off of colored surfaces can create a color cast in your images.

  • Page 29: Using Rear- Or Second-Curtain Synchronization

    Pull the built-in reflector and diffuser panels all the way out of their slot in the flash head. Push the diffuser back in while leaving the reflector extended. Using Rear- or Second-Curtain Synchronization When you photograph a moving subject with a slow (1/30 second or longer) shutter speed and a flash, the flash will freeze the moving subject, and the long exposure will cause motion blur and light trails to appear in the image, especially in low light.
  • Page 30 The VS-570C supports rear-curtain sync modes on cameras that offer the setting. Consult your camera’s manual to find out how to activate it. Use your camera’s manual or shutter-priority mode to control the amount of blurring and light trails you capture by varying the shutter speed.

  • Page 31: Using Your Vs-570C As A Wireless Master Or Slave

    Using Your VS-570C as a Wireless Master or Slave The VS-570C is equipped with advanced wireless flash functions, allowing you to fire the flash remotely while still maintaining full TTL or manual control. In addition, it can be set to multiple channels and groups, giving you unlimited creative lighting possibilities.

  • Page 32: Using Your Vs-570C As A Wireless Master

    B, or C) and set the mode and power ratio for each group. Using Your VS-570C as a Wireless Master The VS-570C can be used as a wireless TTL or manual master, enabling you to set and control all functions of your wireless slave flash units from the VS-570C.
  • Page 33 Setting the VS-570C as a wireless master involves pressing the Mode button to advance from one setting to the next, as well as using the up and down navigation buttons to adjust or enable the settings. The settings that you can adjust or enable are wireless master mode, master flash on/off, channel number, high-speed sync on/off, group mode, and each group’s power, ratio, or FEV.
  • Page 34 Use the up or down navigation buttons to select on or off. Select the wireless channel. Press the Mode button and use the up or down navigation buttons to cycle through channels 1–4. Using Your VS-570C as a Wireless Master...
  • Page 35 For more information on high-speed sync, refer to page 19. Choose the wireless communication mode. Choose whether to use the VS-570C as a wireless master in TTL or manual mode. Press the Mode button and use the up or down navigation buttons to select TTL or Manual.

  • Page 36: Ttl Master Setup

    TTL Master Setup The VS-570C offers three wireless TTL master modes, which are ABC, A:B, and A:B+C. In ABC mode, all three groups fire at the same power output. In A:B mode, only groups A and B fire, and power output for groups A and B is set at a ratio. For example, if the A:B ratio is set at 2:1, group A fires at twice the power of group B.

  • Page 37: Choose The Group Mode

    Choose the Group mode. After completing steps 1–6 on pages 33–35, press the Mode button to continue to the wireless master setup screen. Use the up or down navigation buttons to cycle through the three TTL modes. ABC mode: While cycling through the three TTL modes, press the Mode button when the ABC mode indicator appears onscreen.
  • Page 38 Confirm your settings. Press the Mode button to return to the wireless master summary screen. GROUP A GROUP B At this point, your VS-570C’s wireless TTL master setup will be complete, and you will be ready to start shooting. Choose the Group mode...
  • Page 39 GROUP C Confirm your settings. Press the Mode button to return to the wireless master summary screen. At this point, your VS-570C’s wireless TTL master setup will be complete, and you will be ready to start shooting. Choose the Group mode...

  • Page 40: Manual Master Setup

    Manual Master Setup Wireless manual master mode enables you to remotely set independent power output for each of your slave flash groups. Flash power output is indicated onscreen as levels 1 through 8. Each successive level halves the output from full power (1) all the way down to 1/128 power (8) over an eight-stop range, as detailed in the table below: Flash Level Flash power output...
  • Page 41 Manual master mode offers three modes, which are A, AB, and ABC. In A mode, all three groups (A, B, and C) fire at the same (global) flash power output. In AB mode, only groups A and B fire, and power output is set individually for both groups. In ABC mode, all three groups fire, and power output is set individually for all three groups.

  • Page 42: Choose The Group Mode

    Set the power output. Use the up or down navigation buttons to set the power output from 1–8. GROUP A Confirm your settings. Press the Mode button to return to the wireless master summary screen. At this point, the wireless manual master setup will be complete, and you will be ready to start shooting.
  • Page 43 Set the power output for group B. Press the Mode button and use the up or down navigation buttons to set the power output for group B from 1–8. Confirm your settings. Press the Mode button to return to the wireless master summary screen. At this point, the wireless manual master setup will be complete, and you will be ready to start shooting.
  • Page 44 GROUP A GROUP B GROUP C TTL Master Summary screen...

  • Page 45: Master Summary Screen

    TTL Master Summary screen High-speed sync TTL mode Wireless TTL mode Slave channel Slave group Zoom mode Zoom position TTL Master Summary Setting Screen TTL Master Summary screen...
  • Page 46 GROUP A GROUP B GROUP C Manual Master Summary screen...
  • Page 47 Manual Master Summary screen High-speed sync Wireless Manual mode Manual mode Slave channel Slave group Zoom mode Zoom position Manual Master Summary Setting Screen Manual Master Summary screen...

  • Page 48: Using Your Vs-570C As A Wireless Ttl Slave

    Using Your VS-570C as a Wireless TTL Slave Setting the remote TTL flash units: You can set the VS-570C as a wireless TTL slave for both the Canon and Nikon TTL systems. To set the flash unit to function as an automatic TTL slave, follow these steps: Make sure the master flash or controller on your camera is on and set to automatic TTL mode.
  • Page 49 D. When using multiple flash units, select the same group and channel for all units being used in a particular light position. For example, if you are using three VS-570C units, you might want to set two as a main light on channel 1, group A, and set the third as a fill light on channel 1, group B.

  • Page 50: Using Your Vs-570C As A Wireless Manual Flash

    For even greater creative control, you can set the output levels of your remote flash units manually. Using the optical slave feature, the VS-570C can be set to fire whenever it detects a signal from the master flash. This works optically—when the VS-570C “sees” another flash firing, it will instantaneously fire along with it.
  • Page 51 If the slave flash is not set correctly, it may be triggered by the pre-flash and fire before the camera’s shutter opens. In order to ensure that the VS-570C fires at the correct time, there are three different slave modes available: modes 0, 1, and 2.

  • Page 52: Positioning Remote Flash Units

    This may not work properly with any slave mode. We suggest you avoid using red-eye reduction when using the VS-570C as a slave. Positioning Remote Flash Units You can create a professional lighting setup by positioning remote units singly or in groups to function as main, fill, accent, and other lights.

  • Page 53: Upgrading The Firmware On The Vs-570C

    • The flash head should not be aimed directly into the camera lens. • The wireless sensors are located on the front of the VS-570C. Make sure that the sensor is facing the master flash and that there is no obstruction between the two units.

  • Page 54: Troubleshooting

    Troubleshooting Problem Solution The flash is stuck in the camera Make sure that the mounting foot lock is released. (Page 15) hot shoe. The flash is turned on but won’t Make sure that fresh batteries are installed and in the proper fire.
  • Page 55 Problem Solution The edges of images look dark. Make sure that the flash zoom setting corresponds to the focal length of your lens. (Page 23) There’s a whining sound coming This is normal and does not indicate a malfunction. When the flash from the flash.

  • Page 56: Specifications

    Specifications Type: On-camera and wireless TTL automatic and manual flash Compatible cameras: Canon EOS and G-series models, with support for E-TTL and E-TTL II flash systems Guide number (at 50mm focal length, ISO 100): 141 feet / 43 meters Flash coverage: 24mm–105mm (18mm with diffuser panel) Flash duration: 1/1,000–1/20,000 second High-speed synchronization: Yes Flash recycle time: 0.5–9 seconds (AA NiMH)

  • Page 57: Guide Number Chart

    Tilt positions: 0º, 45º, 60º, 75º, 90º Swivel range: Right 0º–120º, Left 0º–180º Dimensions: 2.5" × 3.9" × 4.7" (65 × 100 × 120 mm) Weight: 9.2 oz. (260 g) without batteries Guide Number Chart* Zoom Position GN - Meters GN - Feet 24mm 28mm...

  • Page 58: Fcc Notices

    FCC notices for customers in the U.S.A. Tested to comply with FCC Standards for home or office use. FCC Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

  • Page 59: One-Year Limited Warranty

    To obtain warranty coverage, contact the BOLT Customer Service Department to obtain a return merchandise authorization (“RMA”) number, and return the defective product to BOLT along with the RMA number and proof of purchase. Shipment of the defective product is at the purchaser’s own risk and expense.
  • Page 60 www.boltflashes.com 97256...

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