Correct lighting for Slow motion filming

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Purplevideos
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Posted Fri Sep 7, 2012 10:30AM

Hi,


I'm looking for advice on the correct lighting for shooting high speed slow motion at 200fps on the FS700.


Outdoors is fine, but indoors I end up with lots of flickering.


I've read that lighting in critical and I've tried different types, but still get flickering! I read that Halogen lights work, but I've tried them and failed!


Can anyone advise me on the lights that they use that give good results at this speed? And also any settings that may help on camera? 


Thanks so much


 


Andy
benjikat
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Posted Fri Sep 7, 2012 11:09AM

I FINALLY got my FS700 today (not from CVP) - so will let you know when I've had a play.


(I am making my own LED "kino"s, which as they are DC "should" be flicker free)
Purplevideos
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Posted Fri Sep 7, 2012 11:13AM
Mine arrived yesterday! So I'm having fun getting to know it!
EricFerguson
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Posted Fri Sep 7, 2012 11:42AM
@Benjikat: Would be really interested to hear more about your LED build. What form are the LEDs that you're starting with in? Are you going to try to do any kind of electronic dimming?
viafilms
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Posted Fri Sep 7, 2012 11:49AM
Larger tungsten bulbs like 5 & 10K's will work because they don't cool down fast enough between cycles.  LED's should be OK too.  Almost all fluorescents and HMI's wil have some flicker. 
Forrestbro
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Posted Fri Sep 7, 2012 12:07PM
Be careful with LED's. I just bough a cheaper LED panel from Amazon and it flickers badly. But we rented some Dracast LED panels for a shoot at work last week and I did a high-speed test and they seemed to be flicker free.
benjikat
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Posted Mon Sep 10, 2012 4:37PM
Whilst I'm very very happy with my LED set up, they are unfortunately rather flickery at 240fps.
BlackBodyRadiation
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Posted Tue Sep 11, 2012 1:18AM

try using daylight as much as you can, even on an outdoor studio setup with a white/black drop for BG and some flags and reflector for redirecting and blocking the sun.


 


best non expencive and non flickering light you can find for slomo


 


 
benjikat
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Posted Tue Sep 11, 2012 2:10AM
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Posted By BlackBodyRadiation:

try using daylight as much as you can, even on an outdoor studio setup with a white/black drop for BG and some flags and reflector for redirecting and blocking the sun.

best non expencive and non flickering light you can find for slomo smile


Pretty much what I've decided to do. Back to the old days of 100 yrs ago
BlackBodyRadiation
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Posted Tue Sep 11, 2012 2:30AM
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Posted By benjikat:
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Posted By BlackBodyRadiation:

try using daylight as much as you can, even on an outdoor studio setup with a white/black drop for BG and some flags and reflector for redirecting and blocking the sun.

best non expencive and non flickering light you can find for slomo smile



Pretty much what I've decided to do. Back to the old days of 100 yrs ago smile

and still the best light source around...
Purplevideos
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Posted Tue Sep 11, 2012 2:51AM
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Posted By benjikat:
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Posted By BlackBodyRadiation:

try using daylight as much as you can, even on an outdoor studio setup with a white/black drop for BG and some flags and reflector for redirecting and blocking the sun.

best non expencive and non flickering light you can find for slomo smile



Pretty much what I've decided to do. Back to the old days of 100 yrs ago smile


Ditto!


Although during testing, I did find that Car & Tractor headlights do work!!! Just hard to fit them in my studio and get any decent, spread out light from them!
benjikat
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Posted Tue Sep 11, 2012 3:22AM
Posted By Purplevideos:
 I did find that Car & Tractor headlights do work!!! Just hard to fit them in my studio and get any decent, spread out light from them!

Urm - so 12V halogen bulbs? (I sense another project )
Purplevideos
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Posted Tue Sep 11, 2012 6:27AM

Yes, anything 12V seems to work fine - I tried hooking up some to a car battery, but the trouble is that the lights I tried were not bright enough and too focussed on one spot.


I'll keep experimenting!


 
benjikat
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Posted Tue Sep 11, 2012 7:53AM
Posted By Purplevideos:

Yes, anything 12V seems to work fine
 

I have a feeling that when I hook my LEDs up to a battery (stage 2 of development), then they may be fine.
Forrestbro
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Posted Tue Sep 11, 2012 9:16AM

Posted By benjikat:
Posted By Purplevideos:

Yes, anything 12V seems to work fine
 

I have a feeling that when I hook my LEDs up to a battery (stage 2 of development), then they may be fine.


I think it's a AC vs DC thing. My LED panel that flickers plugs directly into the wall outlet. The LED panel that I tested that didn't flicker had a huge AD to DC adapter brick.
PeterPrevec
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Posted Thu Sep 13, 2012 11:29AM

I shot with ARRI M18 1.8kW HMI that didn't flicker at 200 fps.


I also use Walimex Pro Bi-Color 312 LED Video Light that I bought of Amazon for cheap. It also uses the same batteries as the FS700. But I need more of them of find bigger that also don't flicker.


I also shot one event with ordinary stage lights and it also didn't flicker. I was sure that it would flicker so I didn't get the info about the lighting.
benjikat
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Posted Thu Sep 13, 2012 4:14PM

Seen this?: https://vimeo.com/45537299


 


Most of my tests have been *much* worse that the worst there.

(Edited on 2012-09-13 16:23:59 by benjikat)
Purplevideos
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Posted Thu Sep 13, 2012 4:44PM
Yep, I watched that already - I found it hard to see much flicker on there.
Rebelz
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Posted Fri Sep 14, 2012 10:15AM

Very glad for you Ben,.. the TOY finally got in the house!!


For sure, natural light makes it very fun and intuitive for slow motion.., I thinking about setting up a small summer studio next to the pool, with diffuser roof and walls, and colour backdrop for next spring.


Did tried some in studio too, first with 2 x 500w LED panel, on a table with small objets, and it wasnt enough.. Then I added 2 X 1K LED panel and I was almost there,.. Had to bring out 2 X 1k ARRI to let the camera shoot 240fps at 500 iso at the shutter speed and aperture I needed!!  


LED is great for not flickering but it decays very fast on distance, so appropriated for small set up or fill light. You will need about 4 or 5 K..


Tungsten would be better for anything larger, I havent tested it yet, but I am sure I will have to had a 5K to the 3 X 1K I already have, and probably will still need the LED panels to fine tune!!..  My studio is small btw..


Conclusion is you need a lot of light for super slow motion, to achieve good result, try to keep iso to minimum, and remember that some fast moving subject will even need a faster shutter speed to avoid too much motion blur,.. so more lights please..


That said, I am playing with it for three weeks now, and it is like getting a new pair of eyes!! The creative possibilities and the quality are surprising me so far and I havent tried it slower than 120fps yet.. hehheh!! Cant wait to put my Canon lenses on it!


Do anyone use external hard drive like Samouraii.. Heard it works as a view finder as well..
benjikat
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Posted Sun Sep 16, 2012 8:06AM

I've not sorted out interior lighting yet, but here's my first proper shoot with my new best friend.


https://vimeo.com/49542577
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