[David Amphlett]

Todd,

We are just starting the process of establishing a dealer network in the US for broadcast and photographic instruments – entertainment tools will come later

first to the party are –

http://www.vfgadgets.com

http://www.sl-x.us

regards

David

[David Amphlett]

Gekko Technology make three sizes

kisslite the flagship product
lenslite
and george

and yes I’m biased as I’m the MD

lots in rental in the UK used widely on promos, docos and high end drama. Just coming into the States

regards

David

http://www.gekkotechnology.com

[David Amphlett]

you should check out kisslite from Gekko Technology

and yes I must declare bias as I’m the MD

lots in rental in the UK but only just into the US
in sales and rental

used on countless pop videos/promos and feature films

http://www.gekkotechnology.com

regards

David

[David Amphlett]

John,

The effect your are seeing is due to the fact almost certainly that many entertainment LED lighting fixtures are driven with PWM. (Pulse Width Modulation).

If the pulse frequency isn’t high enough it will cause flicker.

Obviously for entertainment lighting, so long as they overcome persistance of vision frequency, they work for their application – however as you’ve discovered this is not suitable for photography and moving picture image capture.

You are stuck.

At Gekko Technology our lights are LED based but designed for image capture, and although driven with PWM the frequency is so high that it won’t affect filming in any normal shutter speed/shutter angle combination.

So it is not a function of the LED per se, just how these are being driven.

Unfortunately the only way to overcome this is to use a slower shutter speed which will almost certainly be in conflict with your other requirements. Sharp images.

regards

David Amphlett
MD
Gekko Technology Ltd.

http://www.gekkotechnology.com