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Advice on how to light up a dome

Israel Seoane
 

Hello there!

My name is Israel Seoane and I´m a cinematographer based in Spain. I have a music video shoot next week and I´m looking on advice or references that could help me light up a traslucent plastic dome where the majority of the video happens in.

The dome shoot will happen in a studio with all the walls painted in black. There are some moments where the dome lights up by itself and different projections appear onto its surface. 

I think it could be interesting to place some LEDs or fluorescent tubes on the border of the dome to mark its limits but I have more doubts on how to work out the key light inside the dome. Could it be something soft coming from above? Anybody in the forum has worked out a similar situation where you have to light up something across a traslucent surface?

Thanks in advance,

Israel

Steven Bradford
 

It would help to know how big the dome is?

Steven Bradford
Cinematographer / Instructor
Seattle USA

On Oct 31, 2018, at 10:30 AM, israseoane@... wrote:The dome shoot will happen in a studio with all the walls painted in black. There are some moments where the dome lights up by itself and different projections appear onto its surface.

Israel Seoane
 

Absolutely. The dome is half dome-translucent plastic of 7m(23feet) diameter by 4.5 m(14,60feet) at its tallest point.
I was thinking of using the light of the projector as the main source. I’m trying to get more info bout the specifications of the projector.     

On 2 Nov 2018, at 01:59, Steven Bradford <bradford@...> wrote:

It would help to know how big the dome is?

Steven Bradford
Cinematographer / Instructor
Seattle USA

On Oct 31, 2018, at 10:30 AM, israseoane@... wrote:The dome shoot will happen in a studio with all the walls painted in black. There are some moments where the dome lights up by itself and different projections appear onto its surface.




Israel Seoane
Cinematographer, photographer and video editor.

(+34)639 88 50 77

Skype: belcebutururu









Justin Black
 

Disclaimer - I'm not particularly experienced with this aside from noodling with projection on a couple shoots.   

I would think lighting with the projectors exclusively is how you'd need to do it - if you want the projected elements to read as bright the projectors need to be bright enough to provide your lighting affects, and any supplementary lighting would wash it out and give you less control. I'd think to use multiple projectors as dimensions require and use software to map them to the surface/give clean seams. 

If you have other fixtures playing that cast light onto the projected surface you'll likely need to dim them down while the projections are up to get them to read.

--
Justin Black
Director of Photography
Associate Member, Canadian Society of Cinematographers
905.808.0433

Israel Seoane
 

Thank you for your reply, Justin.
I also agree that everything added in terms of lighting should be dimmed down and softened to make the projection stand out.

El 2 nov 2018, a las 14:30, Justin Black <contact@...> escribió:

Disclaimer - I'm not particularly experienced with this aside from noodling with projection on a couple shoots.   

I would think lighting with the projectors exclusively is how you'd need to do it - if you want the projected elements to read as bright the projectors need to be bright enough to provide your lighting affects, and any supplementary lighting would wash it out and give you less control. I'd think to use multiple projectors as dimensions require and use software to map them to the surface/give clean seams. 

If you have other fixtures playing that cast light onto the projected surface you'll likely need to dim them down while the projections are up to get them to read.

--
Justin Black
Director of Photography
Associate Member, Canadian Society of Cinematographers
905.808.0433