FAQs - LINK Flash Unit
Is the LED single source?
What is the TLCI measurement?
What is the CRI measurement?
What is the LUX measurement?
Lux is not a measurement of the output of a light source. Lux describes how much light is shining on a surface.
It is dependant on three things:
1) The amount of light emitted by a source
2) The distance between the light source and the measurement surface
3) The surface area of the measurement surface It is highly context dependant and cannot be specified up-front
What is the actual wattage of the LED?
Running on AC: 95W | Running on battery: 85W
What is the lumen measurement?
Will the LINK work with the Vagabond Mini?
No. There are two things that cause the VML to brown-out when attempting to charge a LINK:
1) The LINK uses a boost converter to achieve a higher power factor then the older lights. (>0.9 on the LINK vs. about 0.6 on the older lights)
2) When the load on the VML is greater than 100W, the line voltage will sag until the high-load condition passes. On the older lights, when the line voltage decreases, the load it presents also decreases, because it uses a capacitive multiplier to charge the flash capacitors. Eventually, the decrease in voltage and current reach an equilibrium at around 100W and the light charges at a reduced rate. On the LINK, when the line voltage decreases, the LINK will attempt to maintain a constant load because, by definition, a high power factor means that the product presents a constant load to the line. So as the voltage sags, the LINK will attempt to draw more current to maintain a constant load, until the VML browns-out and causes the LINK to turn off entirely.
Will the LINK work with the Vagabond Extreme?
Will it work with any other battery packs?
It will also work with the Vagabond 2.
What are the requirements?
The maximum output of the inverter must be 400W or greater. Pure sine wave is preferred but modified sine wave will also work.
ABSOLUTELY DO NOT USE A SQUARE WAVE INVERTER!
How long will the battery last with the modeling light at full power (no flash)?
How many full power flashes on a fully charged battery (without the LED on)?
How many min. power flashes on a fully charged battery (without the LED on)?
What is the expected lifetime of the battery before needing to be replaced?
Are there any best practices for storing and/or maintaining the life of the battery?
1) Avoid over-discharging the battery (i.e. using the battery until the LInk shuts down, wait a few minutes for the battery to recover a bit and then continuing to use the battery until every last Joule is extracted). Repeated complete discharges can cause induce errors in the BMS circuitry that will prevent the battery from fully recharging.
2) If you aren't going to use the battery for an extended period of time (>3 months) it is best to leave the batteries partially discharged (40-60% of full charge) rather than fully charged. When a Lithium-Ion battery is fully charged, it will oxidize much faster, which reduces its useful life
Does the charger charge the two batteries consecutively or at the same time?
How long does it take for one battery to fully charge from depletion?
Is the unit made in the US?
Did Paul C. Buff design the LINK?
Yes. It was designed and developed by our engineers in Nashville, TN.
Does the placement of the battery cause an issue with too much weight being on the back?
If the handle on the light stand is not stiff enough, the LINK will lean backwards under the weight of the battery, or fowards under the weight of a modifier (softbox, octabox, umbrella). To remedy this, simply pull out the handle of the light stand to loosen it, turn the large knob clockwise to tighten the final retention force and then pull in the handle of the light stand to re-tighten it.
What is the usable HSS range?
9 stops (full to 1/256 power)
What is the difference between the different flash modes?
COLOR MODE: Emits light in a modulated fashion to guarantee 5600K light emission (+/- 150K).
This is ideal for minimizing the amount of post-production work, color correction, etc... after a photo shoot.
It should be used for slow or stationary targets otherwise motion blur may be noticable in the photo.
ACTION MODE: Emits light in the fastest possible time frame.
This is ideal for stopping action (taking photos of fast-moving targets with little or no noticable motion blur) in conditions where ambient light is low.
HSS MODE: Emits a constant light-output over the course of 1/125s (or 8ms) to guarantee no banding with X-sync speeds as high as 1/160s (or 6ms).
This is ideal for stopping action in conditions where ambient light is high.
HSS mode is only availible when using the LINK with an approved remote trigger, such as the Hub.
VIDEO USE | LED Modeling Light and Fan Information
What is the decibel measurement of the fan with the LED modeling light at full power?
What is the watt equivalent of the LED modeling light at full power?
The LED modeling light at full power emits the equivant amount of light as a 600W Halogen bulb or a 800W Incandescent bulb.