Homemade kino bank for models video shots, Help!

[LuisReggiardo]

Hi!
I am helping a friend building 2 kino banks for doing models video (pal dv) shots in a small studio (4mt x 6mt) with a marine-blue background.

It's my first time doing this and we dont have much money to spend, si I need your help because many of you here have build homemade kinos before:

*LAMPS: Based on Argentina the best and smalle I could find where the OSRAM DULUX "L" LUMILUX of which are two versions:

a- Dulux L LUMILUX Standard - 36W, 16", CRI 80+ (1B), 3000-4000-6000K, 2900lm, 2G11 mount
b- Dulux L LUMINUX DE LUXE - 36W, 16", CRI 90+ (1A), 3000-4000-6000K, 1900lm, 2G11 mount

As you can see the difference is +CRI rating but less Lm. per lamp...

I dont need the best CRI levels so 1B would be enough, and I get +lm...

My questions:
1- How much lm would I need in total using 2 banks to light the model at 2-3 meters for 1-CCD DV cameras? With a 4-lamps per bank, thats about 23.000lm (288Watt).

2- Should I build the bank out of 0,5inch thick wood (can do it myself) or metal (must have it done). Any ideas?

3- I think of using non-electronic ballasts since electronic cost 4x more and I dont have the flicker problem and dont care if they take longer to start... Is it ok or you know of electronic ballast that can feed more than one 36W tube each?

4- Any ideas/pictures for a convenient rig/support system to attach to a standard lighting tripod?

5- Colo temp: warmer temp (3000K) brings more lm/W as opossed to 5000K tubes. I am using a 3200K/5800K DV camera and wont use the kino outdoor, so I guess the 3000K choice is better: what do you think?

Thank you for any help!

Luis from Argentina

 

[j]

OK, here's a tip, since you are shooting models... Get a couple of sheets of rosco cosmetic rouge (#187 US Code) and put that over the fluos. It always makes womens skin more pleasing to the camera...

-j

 

[LuisReggiardo]

Hi J!
Thx, will take a look at those filters.

How many lumens do you think would be enought for DV video capture of models?

12K (2x3@1900-36W-5000K-90/100)
15K (2x4@1900-36W-5000K-90/100)
17K (2x3@2900-36W-3200K-80/90)
23K (2x4@2900-36W-3200K-80/90)

Thanks!

 

[tigeba]

There is no real answer to this question. You can light someone with a 250 watt fresnel and a bounce card, or you can light someone with a billion lights.

 

[scannon]

Luis:

Per your private e-mail to me I have sent you info on fixtures and clamps and a close up of my lamp and clamp photo. Here is some additional Info

A 4 tube florescent with T8 32w will generate approximately 600w equivalent of incandescent light. However, florescent light falls off quicker than incandescent so the farther away the subject is from the light the dimmer it will be as compared to the incandescent lighting. Within 2-3m (7-10 ft) two two tubes or one four tube will provide enough light to provide you with a 3-4 F stop range for the iris. Also the amount you need or want depends on clothing color background, etc (contrast) If the models ar wearing bright white you will have to tone down the the amount of light vs darker clothes. If the models are wearing no clothes forget building the lights. I will fly down with my lights to help

Good luck