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Recreating hard sunlight bounce (2 replies)

Oskar
1 week ago
Oskar 1 week ago

Hello!

I've tried to recreate a low hard morning sun hitting a window and cut with some kind of fabric/curtain.

You know the feeling where a shred of light bounces all around and fills the room in a magical glowy way. Even a thick coloured curtain glows and give an ambient color to the room and you can see particles floating in the air. It fells like the room and the light is "alive".

I've only tried this with 18K's but I never got the same result. It just kind of "dies". If I expose for the room to be something like 1 and 1/2 stop under, the highlights go 1 stop over blown. (This is not scientific, just my feeling from set)

Is this because you need more distance to get the bounce to go further? 

Is there any differens in using a very powerfull source (like the 18K) or using something weaker like a 1200w (If it was as big physically as the 18K) except for exposure? Does the light behave differently?

Anyone here done this succesfully? Greatfull for any clues 🙂

dmullenasc
1 week ago
dmullenasc 1 week ago

Fall-off rate is only affected by distance so the only difference between an 18K and a 1.2K would be if they altered where you placed them in terms of distance from the window, if both were the same distance, the fall-off rate would be the same, the only difference would be that the 1.2K would be dimmer than the 18K (and being dimmer, the amount of ambient daylight from outside would be greater relative to the light... but that's a different contrast-lowering effect than what you are talking about, which is how a powerful light bounces around a room.) I think in your case, you need to back off the light more to reduce the fall-off rate plus use a camera with a very wide dynamic range to reduce the how quickly the windows clip.

Perhaps a very light haze would help increase the ambience in the room.

Oskar
1 week ago
Oskar 1 week ago

Thank you Mr Mullen, then I can stop dreaming of even bigger sources 🙂

Maybe I'm mistaken but I would say there is one difference though, more powerfull sources seem to be able to light "thru" objects i.e thick curtains, plastic, ears etc. Which in some cases is something you might want.

I've only tried this with the Alexa btw.

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