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Video Newbie. How Much Light?


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#1 matt215

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Posted 24 March 2013 - 07:01 AM

New to video. I'm wondering how much light I need to shoot macro video. I know, I know, everyone always says "as much as you can get." I have a Sola 800 and a Sola 2000 with a Canon 5d mk3. Are those 2 Sola lights enough? I figured that since the Canon 5d 3 is pretty good at high iso, I could just bump the iso to about 800 or maybe even a little over 1000 if I needed it. What do you think? Do I have enough light?


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#2 ChrigelKarrer

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Posted 24 March 2013 - 07:12 AM

For macro the Sola 800 will be enough and you will need to dim the 2000 without raising the ISO.
Chris


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#3 matt215

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Posted 24 March 2013 - 08:44 AM

Really? I've always heard people talking about light, light, and more light when it comes to video. Anyway, that's good to hear.
Canon 5D mk2, Ikelite housing, Ikelite 125 strobes, 17-40 mm 4.0 L, 100 mm, 24-150 mm L, 100-400 mm 5.6 L
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#4 Ferg42

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Posted 24 March 2013 - 08:50 AM

It's true that you need a lot of light if you're shooting wide angle and trying to balance with ambient light, but for macro you're so close to the subject that you need less light.


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#5 matt215

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Posted 24 March 2013 - 08:58 AM

Thanks Ferg42 and ChrigelKarrer! Y'all just made my day, and my wallet thanks you...
Canon 5D mk2, Ikelite housing, Ikelite 125 strobes, 17-40 mm 4.0 L, 100 mm, 24-150 mm L, 100-400 mm 5.6 L
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#6 ChrigelKarrer

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Posted 24 March 2013 - 09:19 AM

both of your lights will be almost useless on daylight conditions and medium or wide angle but for macro with distances less than 2 ft they are fine.

I made some videos with the D7000 20-30 ft down on a sunny afternoon in the crystals waters of Sardinia without any artificial light

and it worked fine:  the goat fish at at 1:00 and the only reason to use a video light under this conditions is to get back the original colors.

 

To get enough power for daylight conditions, a nice wide 100°+ beam and more than 2 ft distance you need at least 2 x 8000 lumen LED / 2 x 100W Halogen or 2 x 50W HID light!

You can see a example while testing my GoPro Hero2 and one of my mangrove 4320 Lumen LED light in this video:

Chris


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#7 HDVdiver

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Posted 31 March 2013 - 02:49 AM

The notion that macro requires relatively little in the way of Lumen power is nonsense (as is the several multi-power settings gimmick of some already low-power "beginners" lights)...particularly if you are shooting "wide-macro" in bright ambient daylight conditions.

 

To maximize image quality ISO needs to be low; and for good DOF (particularly with large sensor cameras) the f-stop needs to be around f11-16 (any higher risks diffraction effects).

 

If you are using the same lights for wide/wide-macro the beam angle needs to be at least 100 degrees. I would not consider anything less than 4000 Lumens LED.

 

Forget Halogen and HID as they have poor Lumen per watt efficiency.