caution about turning up the flash out put... (Page 3): Hey GN, that's possible, it could also be that it may not use capacitors like a Speedlight does which is what causes recycle...

rdubreuil Loc: Dummer, NH USA

GoofyNewfie wrote:

Here’s one:
https://m.youtube.com/watch?v=8iUIKUXm3Po
According to the reviewer, the zero recycle time because it is a low power unit.
Because of the bi-color led bulbs, at maximum power the color temp is somewhere between tungsten and daylight.

Hey GN, that's possible, it could also be that it may not use capacitors like a Speedlight does which is what causes recycle time, the capacitor needs to build up a charge before firing the flash tube. It may simply be using rectified mains electricity as mentioned below, there are some strobes that use this principle to achieve high rates of flash without recycle time. Which for the OP would also be another option a capacitor less Speedlight/Strobe, I'm sure they are expensive too though. It was just a suggestion I wasn't advocating it to be the be all end all for flash work.

Excerpt form Wikipedia:

Scientific explanation of flashtubes[edit]
Strobe lights usually use flashtubes with energy supplied from a capacitor, an energy storage device much like a battery, but capable of charging and releasing energy much faster. Recently, some strobe lights have been found to use rectified mains electricity and no capacitors at all. In a capacitor-based strobe light, the capacitor is charged up to around 300 V. Once the capacitor has been charged, a small amount of power is diverted into a trigger transformer, a small transformer with a high turns ratio. This generates the weak but high voltage spike required to ionize the xenon gas in a flash tube. An arc is created inside the tube, which acts as a bridge for the much bigger pulse to flow down later. Arcs present almost a direct short circuit, allowing the capacitors to quickly release their energy into the arc. This rapidly heats the xenon gas, creating an extremely bright plasma discharge, which is seen as a flash.

A strobe without a capacitor storage device simply discharges mains voltages across the tube once it's fired. This type of strobe requires no charging time and allows for much quicker flash rates, but drastically reduces the lifetime of the flash tube if powered for significant periods of time. Such strobes require a form of current limiting, because as mentioned above, an arc acts as a kind of short circuit. If this current limiting were to be eliminated, the flash tube would attempt to draw high currents from the electricity source, potentially tripping electrical breakers or causing voltage drops in the power supply line.

Individual strobe flashes typically only last around 200 microseconds, but can be sustained for greater or lesser periods of time depending on the strobe's intended use. Some strobes even offer continuous mode of operation whereby the arc is sustained, providing extremely high intensity light, but usually only for small amounts of time to prevent overheating and eventual breakage of the flash tube.

rdubreuil Loc: Dummer, NH USA

bkyser wrote:

Not the exact issue you are describing, but when I... (show quote)

That's why the SB-910 came along, fixed the SB-900's overheating issues.

GoofyNewfie Loc: Kansas City

rdubreuil wrote:

Hey GN, that's possible, it could also be that it may not use capacitors like a Speedlight does which is what causes recycle time, the capacitor needs to build up a charge before firing the flash tube. It may simply be using rectified mains electricity as mentioned below, there are some strobes that use this principle to achieve high rates of flash without recycle time. Which for the OP would also be another option a capacitor less Speedlight/Strobe, I'm sure they are expensive too though. It was just a suggestion I wasn't advocating it to be the be all end all for flash work.

Excerpt form Wikipedia:

Scientific explanation of flashtubes[edit]
Strobe lights usually use flashtubes with energy supplied from a capacitor, an energy storage device much like a battery, but capable of charging and releasing energy much faster. Recently, some strobe lights have been found to use rectified mains electricity and no capacitors at all. In a capacitor-based strobe light, the capacitor is charged up to around 300 V. Once the capacitor has been charged, a small amount of power is diverted into a trigger transformer, a small transformer with a high turns ratio. This generates the weak but high voltage spike required to ionize the xenon gas in a flash tube. An arc is created inside the tube, which acts as a bridge for the much bigger pulse to flow down later. Arcs present almost a direct short circuit, allowing the capacitors to quickly release their energy into the arc. This rapidly heats the xenon gas, creating an extremely bright plasma discharge, which is seen as a flash.

A strobe without a capacitor storage device simply discharges mains voltages across the tube once it's fired. This type of strobe requires no charging time and allows for much quicker flash rates, but drastically reduces the lifetime of the flash tube if powered for significant periods of time. Such strobes require a form of current limiting, because as mentioned above, an arc acts as a kind of short circuit. If this current limiting were to be eliminated, the flash tube would attempt to draw high currents from the electricity source, potentially tripping electrical breakers or causing voltage drops in the power supply line.

Individual strobe flashes typically only last around 200 microseconds, but can be sustained for greater or lesser periods of time depending on the strobe's intended use. Some strobes even offer continuous mode of operation whereby the arc is sustained, providing extremely high intensity light, but usually only for small amounts of time to prevent overheating and eventual breakage of the flash tube.

Hey GN, that's possible, it could also be that it ... (show quote)

It is an interesting piece of lighting equipment, curious to see what they come up with next!

rdubreuil Loc: Dummer, NH USA

GoofyNewfie wrote:

It is an interesting piece of lighting equipment, curious to see what they come up with next!

I thought so too, that's why I mentioned it. I've been looking at it's specs and capabilities, with an Elinchrom Skyport transmitter (receivers are already built into the Neo 2), which has 16 channels, 4 groups and the ability to control 10 lights in those four groups. Not sure what one would use 10 lights at the same time for but, you never know.

Polock

aphelps wrote:

If fast and repetitive full power flashes are needed consider using fresh alkaline cells. Several advantages include higher cell voltage (1.5 vs 1.2 for nimh), lower internal resistance than nimh (less heating) and greater total mAhr capacity. Disadvantage is cost.

where did this bit of misinformation come from

DTran

aphelps wrote:

If fast and repetitive full power flashes are needed consider using fresh alkaline cells. Several advantages include higher cell voltage (1.5 vs 1.2 for nimh), lower internal resistance than nimh (less heating) and greater total mAhr capacity. Disadvantage is cost.

Since when alkaline battery has lower internal resistance than NiMH? Did you test a flash with NiMH and alkaline and see which one recycle faster?

Polock

i don't need to
look about half way down the page
http://www.learningaboutelectronics.com/Articles/Battery-internal-resistance

canon Lee

rdubreuil wrote:

Lee, have you considered a Rotolight Neo2? From what I've seen and read it can shoot at full power and has zero recycle time. It can also be used as a constant light source along with the flash capabilities on or off camera. It has the ability to change color temperature too and shoots in HSS. Check out you tube there are a number of videos on the subject.

rdubreuil... I will check it out... thanks for the advice..

rdubreuil Loc: Dummer, NH USA

Hey Lee, you're welcome, I hope it helps. Let us know what you think after you've researched it and if you go that way let us know how it all works out, happy shooting...