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Re: Spacelight Options

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Re: Spacelight Options
by Rick Wise on Oct 15, 2009 at 12:36:19 am

Donald,

You posted the same question on the CML forum. May I suggest that in the future you start with one forum, wait a day, and if you don't get an answer to your question or the answer is incomplete, them post on another. For the benefit of others here who are interested in this topic, I'm printing below the very thorough reply you received on CML. The suggestion of fluorescents is a great one. I'd suggest flying a large silk below them to even out the top light. Fluorescents will save you both power and height, as you can even place the fluorescents between the grids with some clever rigging. As for dimmers, many fluorescents cannot be dimmed. I'm not so sure you need a dimmer at all. It would be cheaper to have on hand a large grip double to fly below the silk. (Better yet, a single and double.) You could also wire them so that you can cut off individual units as needed.

"15ft (5mtr) to the grid is not that high, a 2kw version will hang about 1/2
mtr below the grid so a 2kw version would give you 160lux in a 5 mtr circle.

"Bearing in mind you overlap these lights you could be getting 300 lux
overall.

"These are also much easier to get dimmers for a 2.5kw dimmer such as the ETC
smart bar could be up there mounted on the grid with the lights these will
power 4 lights.

"If you went 6kw your spacelight would now hang down 1mtr below the grid,
produce about double the light over the same area, but dimmers for each
light will require 3 phase supply, and VERY expensive dimmer packs.

"As a spacelight is only used to create the ambient light you will of course
need conventional lighting to the set/action. you don't say if its film or
TV but the 2kw would be fine for TV, by the way, why not go fluorescent and
save a fortune in power.

"Regards

"John Rossetti London"


Rick Wise
director of photography
San Francisco Bay Area
and part-time instructor lighting and camera
grad school, SF Academy of Art University/Film and Video
http://www.RickWiseDP.com
http://www.linkedin.com/in/rwise
email: Rick@RickWiseDP.com


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