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Let's talk lighting

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thebishop:
I just put in a preorder for the camera and are now wondering what people are using for artificial lighting?

Of course there are many factors playing, but looking at around 4K fps with minimal gain settings to reduce image noise, with say f4 aperture, what have people used successfully?

I am going to try with the Manfrotto LYKOS Daylight (https://www.bhphotovideo.com/c/product/1204246-REG/manfrotto_mll1500_d_lykos_daylight_on_camera_led.html?c3api=2572%2C113041717267&gclid=EAIaIQobChMI6bzn7fem1gIVSIGyCh2YZQfIEAAYAyAAEgKWVvD_BwE)
and if anyone is interested I will share the experience, but would be very interested to learn about other people experience with lighting.

ptrautne:
I have had good luck with the following LED lights

https://www.amazon.com/gp/product/B018NKRQ4Q/ref=oh_aui_detailpage_o02_s01?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B01K1CGKC8/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B004I6OSPK/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1

https://www.kickstarter.com/projects/415736264/litratorch-worlds-most-versatile-adventure-ready-l?ref=user_menu

Martin:
Hi Bishop,

it all comes down to personal preference regarding tint/kelvin range/CRI but one aspect is very important to keep in mind/verify: no PWM driven light sources in or even near your setup.

You'll want very constant current and voltage driven (driver = controller) LED lights, else you'll notice pulsating brightness changes throughout your video.

I will tripod-mount several high CRI, (very) high output flashlights from my night-(geo)caching collection and see if that'll be enough ;)

For example this (amazing) person tests these lights thoroughly, including tests for any traces of PWM (Pulse Width Modulation): http://flashlightreviews.ca/reviews.htm
Not sure if this is a subject in every studio lights review?

All the best
Martin

thebishop:
I hope the Manfrotto is stable, they make a big deal of "non-flickering" everywhere...

1600 lux @ 1m is perhaps not enough though, but will start with that and see how far it takes me, the Godox one seemed quite reasonable too.

Unfortunately, the cheap "big light" is mostly unavailable for me for the next 6 months or so... The downside of living a bit too far up north.

Any other experiences would be interesting, I guess it should be possible to actually calculate the amount of light that would be needed for a given set of video parameters for a reasonable exposure, but too complex for me right now.

tesla500:
As a rough estimate, for a color camera, you'll need about 7 lux per fps at f/2 and 360 degree shutter.

So at 4000fps, you'd need about 4000fps * 7 = 28,000 lux. If you want to run f/4, you'll need 4x as much light, so 110,000 lux which is about noon day sunlight

I'm afraid you'll need far more light than those Manfrotto lights will provide, unless you're putting them right next to the subject. At 1m (3') distance you'd need 18 of those lights for f/2 4000fps

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