OCS-FAC - Flash Drive Vello - Free user manual and instructions

Product Type	Flash Unit
Brand	Vello
Model	OCS-FAC
Dimensions (approx.)	70 x 100 x 130 mm
Weight (without batteries)	200 g
Power Source	4 x AA batteries or rechargeable Li-ion
Guide Number (ISO 100, 35mm zoom)	30
Flash Modes	TTL, Manual, Multi, Slave
Zoom Range	24-105 mm (auto/manual)
Recycle Time	0.1-5 seconds (depending on power)
Number of Flashes (per battery set)	200-1500
Flash Exposure Compensation	+/- 3 EV in 1/3 steps
Wireless Control	Optical slave, radio trigger compatible
High-Speed Sync	Yes (up to 1/8000s)
Bounce Head	Yes, tilts up -7° to 90°, rotates 180°
Display	LCD panel
Maintenance	Clean contacts with dry cloth; store in dry place
Safety	Do not disassemble; avoid water and extreme temperatures
Spare Parts	Replacement batteries, charging unit, sync cord available
Repairability	Contact Vello support for service; some parts user-replaceable

Frequently Asked Questions - OCS-FAC Vello

How do I attach the Vello OCS-FAC flash to my camera?

Slide the flash's hot shoe mount onto your camera's hot shoe until it clicks. Secure it by tightening the locking ring or knob. Ensure it is compatible with your camera's brand (Canon, Nikon, Sony, etc.).

What type of batteries does the OCS-FAC flash use and how long do they last?

The flash uses 4 AA batteries (alkaline, NiMH, or lithium). Battery life varies: typically 200-1500 flashes depending on power output and battery type. Rechargeable NiMH batteries are recommended for frequent use.

Can I use the OCS-FAC flash wirelessly?

Yes, it supports optical slave mode and can be triggered by another flash. For radio triggers, use a compatible receiver attached to the flash's sync port.

What is the maximum sync speed for this flash?

The flash supports high-speed sync up to 1/8000s when used with a compatible camera in HSS mode. In normal mode, sync speed is typically 1/200s to 1/250s.

How do I clean and maintain the flash?

Wipe the exterior with a soft, dry cloth. Clean the battery contacts and hot shoe with an eraser if needed. Store in a cool, dry place. Avoid exposing to moisture or extreme temperatures.

What do the different flash modes mean?

TTL mode uses the camera's metering for automatic exposure. Manual mode lets you set power from 1/128 to full. Multi mode stroboscopic flash. Slave mode triggers from another flash.

How do I set the zoom on the flash head?

The flash automatically zooms to match your lens focal length (24-105mm). You can manually adjust zoom via the control buttons. The LCD shows the current zoom setting.

Why is the flash recycling slowly?

Slow recycle time indicates weak or depleted batteries. Replace with fresh high-capacity NiMH batteries. The recycle time also increases at higher power outputs.

Can I use the flash off-camera?

Yes, use a sync cord or wireless trigger. The flash has a PC sync port for wired connection. For wireless, use optical slave mode or a radio trigger.

What should I do if the flash overheats?

The flash has a thermal protection feature. If it overheats, it will automatically disable and the LCD will show an error. Turn it off, remove batteries, and let it cool for 10-15 minutes before reuse.

USER MANUAL OCS-FAC Vello

Close-up of a black camera module with attached cable, against a black background (no visible text or symbols)

THANK YOU FOR CHOOSING VELLO

The Vello OCS-FAC/ OCS-FAN is a flexible rod with an integrated TTL cable that mounts directly to your camera's hot shoe. Ideal for macro and portrait photography, it allows photographers of all levels to experiment with flash angles while maintaining all of the TTL flash functionality of the camera.

The TTL rod sets your flash off-camera and enables you to achieve a more natural or dramatic look. It also reduces the harsh shadows of a direct, on-camera flash as well as the possibility of red-eye when shooting in dim light. The gooseneck design of this TTL rod makes it possible to be creative with flash angles either from above or the side. But once you've decided on an angle, the sturdy metal construction assures that your flash will stay in place while you shoot.

OVERVIEW

PRECAUTIONS

- Exercise caution when using the Flexible TTL Rod. Do not bend the rod more than 180^ or rotate the rod's hot shoe. Doing so may damage the rod.

Diagram of two USB connectors with a red prohibition symbol between them (no text or labels)

• Switch off all devices (camera and flashes) before adding or removing a flash unit.

• Do not attempt to modify or disassemble the rod, shoe, or contacts. Do not attempt to daisy-chain rods.

• This device is not water-resistant. Do not immerse in or expose to water, rain, or snow.

• Do not clean the rod with solvents. Use a soft, dry cloth to clean the rod and connections.

• Do not use the device in conditions of extreme heat, severe cold, or high humidity.
  • Images are for illustrative purposes only.

MOUNTING ON THE CAMERA

1. Loosen the locking wheel by turning it counterclockwise.
2. Position the TTL rod's mounting foot with the Lock indicator facing the rear of the camera, and insert the mounting foot completely into the hot shoe of your camera.

Two-step photo showing a hand adjusting a camera's adjustment knob, no text or symbols visible

Note: Make sure the TTL rod's mounting foot is facing the right direction, or your flash will not be able to communicate with your camera.

1. Tighten the locking wheel by turning it clockwise until secure.

MOUNTING THE FLASH

1. Make sure that both the camera and flash are turned off.
2. Set the camera and rod assembly onto a flat, stable surface and insert the mounting foot of the flash into the hot shoe of the rod.

Close-up of a hand holding a black mechanical device with a circular head (no visible text or symbols)

Hand holding a black compact camera with a small inset showing a separate device (no text or symbols visible)

1. Use your flash's locking mechanism to secure the flash to the TTL rod.
2. Turn on the flash and the camera.

SHOOTING WITH THE FLEXIBLE TTL ROD

Close-up of hands holding a black handheld device connected to a cable, against a plain white background (no text or symbols visible)

Bend the rod to position your flash at the desired angle. Be careful not to bend the rod beyond 180^ or rotate the rod's hot shoe. Doing so may damage the rod.

When shooting with the TTL Flexible Rod, hold your camera with one hand while holding the TTL rod with the other.

Person holding a DSLR camera with a black adjustable flash unit (no text or symbols visible)

SPECIFICATIONS

	OCS-FAC / Canon OCS-FAN / Nikon
Length
Weight
Compatible Cameras	EOS DSLR Nikon DSLR
Compatible Flashes	TTL / E-TTL II Nikon i-TTL

ONE-YEAR LIMITED WARRANTY

This VELLO product is warranted to the original purchaser to be free from defects in materials and workmanship under normal consumer use for a period of one (1) year from the original purchase date or thirty (30) days after replacement, whichever occurs later. The warranty provider's responsibility with respect to this limited warranty shall be limited solely to repair or replacement, at the provider's discretion, of any product that fails during normal use of this product in its intended manner and in its intended environment. Inoperability of the product or part(s) shall be determined by the warranty provider. If the product has been discontinued, the warranty provider reserves the right to replace it with a model of equivalent quality and function.

This warranty does not cover damage or defect caused by misuse, neglect, accident, alteration, abuse, improper installation or maintenance. EXCEPT AS PROVIDED HEREIN, THE WARRANTY PROVIDER MAKES NEITHER ANY EXPRESS WARRANTIES NOR ANY IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. This warranty provides you with specific legal rights, and you may also have additional rights that vary from state to state.

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

For more information or to arrange service, visit www.vellogear.com or call Customer Service at 212-594-2353.

Product warranty provided by the Gradus Group.

www.gradusgroup.com

VELLO is a registered trademark of the Gradus Group.

© 2016 Gradus Group LLC. All Rights Reserved.

VELLO™

A Gradus Group Brand

www.vellogear.com

All other trademarks are the property of their respective owners. © 2016 Gradus Group LLC. All Rights Reserved. GG1