LED Corn Bulbs

[Billy Jim]

Anyone have experience with these LED corn bulbs I came across

while searching for daylight balanced bulb to fit my Chimera Triolets?


http://www.amazon.com/Hyperikon®-Lighting-Replacement-UL-Listed-LDL-Qualified/dp/B00SUB2Q4E/

 

[Brandon J.F.]

I've tested a lot of lights like this. There are 2 major problems with them. The first is the color quality is usually awful. That's typical of most LEDs that are not made specifically for film/photography use and even many that are. The second is the more powerful bulbs, which are the most fun (and useful), will have a fan inside them. So, noise is an issue...

Here is a tungsten prototype I had built for me. CRI 98 and crazy bright. It looks amazing in China ball.

I'm working on a custom driver to solve the fan issue and adding a few more useful features. Not sure when they will be done, but they should be really cool.

 

[Billy Jim]

Thank you Brandon.

As far as you know, are ones with high CRI for film/photography on their way?

 

[Zack Birlew]

I tried a supposedly 300W LED from Home Depot that looks a lot like the big ol' CFL bulbs that we normally use. Unfortunately, it actually wasn't all that bright at all! Well, maybe it would have been if it was used in its native socket type which is some industrial style socket. It came with an adapter for normal household sockets though so that's how I was testing it. Even if that was the case and it wasn't reaching the full 300W-level, it should have at least been brighter than the 100W-equivalent standard LED bulbs I was comparing it to but it just wasn't. Thankfully I was able to return it easily so it wasn't too much of a hassle to test but ordering bulbs online, that's a little trickier. If somebody finds a big LED bulb that works for film and video, I'd love to hear about it but spending upwards of $200 for a single bulb, eh, a bit too much for me.

 

[Brandon J.F.]

Thank you Brandon.

As far as you know, are ones with high CRI for film/photography on their way?

I'm working on it. It's a really specialized item and they aren't cheap, but there are so many situations where I would love to use them. The driver (power supply, basically) is the bottleneck. Not the LEDs themselves. I have a new prototype in the works.

Here's another shot of the first prototype:

~11,000 lumens.

 

[Tom Van]

I'm working on it. It's a really specialized item and they aren't cheap, but there are so many situations where I would love to use them. The driver (power supply, basically) is the bottleneck. Not the LEDs themselves. I have a new prototype in the works.

Here's another shot of the first prototype:

~11,000 lumens.

That looks awesome! I need this.

 

[Billy Jim]

I'm working on it. It's a really specialized item and they aren't cheap, but there are so many situations where I would love to use them. The driver (power supply, basically) is the bottleneck. Not the LEDs themselves. I have a new prototype in the works.

Here's another shot of the first prototype:

~11,000 lumens.

I want this in daylight balance, please.

 

[Peter Strietmann]

Are they all mogul bases? Might be perfect for the lantern lock if it fits.

 

[Billy Jim]

Here's a video showing innards of 100w LED corn bulb.

 

[Eric M Hurt]

I second the issue with the quality of light. Just terrible.

 

[Brandon J.F.]

Are they all mogul bases? Might be perfect for the lantern lock if it fits.

The big bulbs are much too long and a bit too wide to fit in a lantern lock rig.

 

[Robert Andriessen]

Hi Brandon,

I'm working on a consumer type lamp and found that having the LEDs in a higher voltage (more in series) will help a lot in making a smaller driver. All the parts of the driver will be smaller at higher voltages.

I'm working on it. It's a really specialized item and they aren't cheap, but there are so many situations where I would love to use them. The driver (power supply, basically) is the bottleneck. Not the LEDs themselves. I have a new prototype in the works.

Here's another shot of the first prototype:

~11,000 lumens.