I am big on Health and Safety, you become this way when you film H&S induction DVDs and film in hospitals as I do. The eye is a very sensitive organ and looking direct into LED lights is as bad as looking direct into the sun.

High intensity LED lights are in my opinion dangerous to use direct into a persons face, if nothing else they leave a terrible after image at the back of the retina which takes ages to go away. (Talking from first hand experience). 

I use LED lighting all the time but if you follow my advice you will not cause problems…

1. As they are heat free you can use stick on velcro at the back of the barn doors, then it’s a matter of applying spots of velcro onto sheets of diffuser and diffusing the light.

2. 1000W LED lights are great for bouncing light or you could attach a white foam board using simple clips and bounce the light if the roof is not white.

I can’t stress enough how bad LED video lighting is when directed into a persons face without diffusion, manufacturers should be aware of this and supply their lights with diffusion. If you have ever bought a hi intensity LED torch you will notice it comes with a warning not to shine direct into a persons eyes and that’s a warning for ONE LED not ONE THOUSAND LED’s !