Author Topic: Which cheap Amazon LED's are recommended?  (Read 315 times)

JeffW

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Which cheap Amazon LED's are recommended?
« on: May 28, 2017, 02:08:51 PM »
Hey David!

Camera looks awesome. I'm about to order a few LED panels for filming high speed. The NEEWER panels look decent. Is there a problem using these (with a dc power source) shooting at 1,000-10,000fps on Chronos?
Any other recommendations?

Jeffism

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Re: Which cheap Amazon LED's are recommended?
« Reply #1 on: May 28, 2017, 09:49:06 PM »
Just had a look at a few product specs for the Neewer lights and they all seem to say "constant current drive" which should work with high speed filming. Most (if not all) lights designed for video should use constant current; most LED flashlights/torches have moved from PWM to constant current, so the chips and designs are cheap and plentiful now.

I'm going DIY for starters. I already have rolls of cheap LED light strips (usually around $5-10 for 5m) just need to connect them to 12V, good for flood or fill lighting. Otherwise I'm just going outside, get plenty of sunlight where I live, even during the cold months. Simple just to place a few reflective panels around to concentrate the light if necessary.

DerpykV

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Re: Which cheap Amazon LED's are recommended?
« Reply #2 on: May 29, 2017, 11:08:35 AM »
You need to make sure the LED's power supply has enough filtering on the output, and that the driver is not overloaded. Some crappy leds will flicker at full power due to the leds discharging the caps before the next fill from the ac input.
I've seen some leds with no drivers and they look horrendous.

Cheers,
Max
« Last Edit: May 29, 2017, 04:34:49 PM by DerpykV »

DerpykV

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Re: Which cheap Amazon LED's are recommended?
« Reply #3 on: May 29, 2017, 11:09:39 AM »
Or they will use PWM to dim which sucks too

gyppor

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Re: Which cheap Amazon LED's are recommended?
« Reply #4 on: May 29, 2017, 11:45:14 AM »
JeffW,

Is your application strictly for mobile use?

If not and you have access to power outlets where you intend to film, I can recommend halogen work lights. They're cheap, very bright and most importantly, they don't flicker on high speed video despite running on AC.

The only downside is they produce a lot of heat, I usually turn them off between shots if I can.

G

JeffW

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Re: Which cheap Amazon LED's are recommended?
« Reply #5 on: May 31, 2017, 12:43:49 PM »
Thanks so much Jeff, Derpy and Gyypor!
Great idea to use halogens, hadn't thought of that. It's mostly sunlight work with some indoor shooting during the winter. Calgary barely sees the sun in the cold months :(

JamesB

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Re: Which cheap Amazon LED's are recommended?
« Reply #6 on: May 31, 2017, 05:06:52 PM »
I have a few of these lights to shoot high speed with. Even at over 10,000fps it has no detectable flicker which is ideal.  They are very bright "About 700 tungsten watts equivalent" and fairly priced. None have gone bad in over 2 years but I've heard of some failing under a year after heavy use in very hot weather.  So keep them cool, they have a fan and heatsink inside even when they do not emit much heat compared to HMIs or Halogen for example.  They are also compatible with the Bowens mount so if you have softboxes and diffusers there are easy to adapt. I have a snoot, softboxes and grids.





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