Jump to content


Photo

Color balancing and Tungsten Arri

arri tungsten lights color balance

  • Please log in to reply
4 replies to this topic

#1 Mike Barlas

Mike Barlas

    New

  • Basic Members
  • Pip
  • 7 posts
  • Cinematographer
  • Ontario

Posted 14 October 2013 - 01:05 PM

Hey all,

 

Question:

 

I noticed when I applied 250 half white Lee diffusion filter on the barn doors of my Arri 1k, that it changed the color

of the light even more yellow.

 

Despite the fact that the camera was balanced for tungsten. It was even worse when

I doubled up, the diffusion.

 

This effect may or may not have happened  when I used a dimmer to lower the light power, it had the same effect.

 

If this is normal, this will make color balancing a nightmare. The lights were not on for that long, say half hour or so.

 

Cheers,

Mike

 


  • 0

#2 Mike Bao

Mike Bao
  • Basic Members
  • PipPip
  • 36 posts
  • Other
  • London

Posted 14 October 2013 - 02:31 PM

No light is perfect tungsten + every time you put any material in front of the light it will shift colour,however I doubt it is significant enough to notice by eye.

When you use a dimmer tungsten becomes more yellow,that's why scrimming is preferable unless you want a colour cast


  • 0

#3 Mike Barlas

Mike Barlas

    New

  • Basic Members
  • Pip
  • 7 posts
  • Cinematographer
  • Ontario

Posted 16 October 2013 - 01:18 PM

Thanks Mike,

 

I was hoping the dimmer would help move things along faster... I guess that is not the case.

Btw, One question to you sir, I don't have much experience lighting groups of people.

 

In this case, I am lighting  close ups one/two persons with a key(1k Arri tung) and a fill 4'4 bank kino (tung).

 

What can I do to when lighting 3 or more people,  in a medium to wide shot.

 

Theortically I was guessing  to combine my 3  4'4 bank kinos to make one larger light source, to avoid casting multiple shadows,

 

Should I just flood the Arri more so it hits more people?

Or forego all together the Arri 1k to light groups?

 

Instead bounce some light on to a 13x13 ft scrim I have (which is a movie profjector screen) with a 750 open face and

an arri without barn doors?

 

Cheers,

Mike


  • 0

#4 jeff woods

jeff woods
  • Basic Members
  • PipPip
  • 80 posts
  • Other
  • Portland, OR

Posted 16 October 2013 - 05:53 PM

Bear in mind that flooding the Arri will diminish the amount of light hitting each subject (and change your contrast ratio), so you'll have to compensate with your exposure.

 

-j


  • 0

#5 Mike Barlas

Mike Barlas

    New

  • Basic Members
  • Pip
  • 7 posts
  • Cinematographer
  • Ontario

Posted 21 October 2013 - 11:23 AM

Thanks Jeff,

 

I ended up using the kino's to light larger groups, not the Arri 1k, they work nicely!

 

Cheers,

Mike


  • 0



Gamma Ray Digital Inc

Abel Cine

Glidecam

Metropolis Post

Tai Audio

rebotnix Technologies

Willys Widgets

Media Blackout - Custom Cables and AKS

CineTape

Paralinx LLC

Broadcast Solutions Inc

FJS International, LLC

Visual Products

The Slider

Wooden Camera

Aerial Filmworks

Rig Wheels Passport

Technodolly

Opal

CineLab

Ritter Battery

Rig Wheels Passport

Ritter Battery

Aerial Filmworks

Glidecam

Abel Cine

Visual Products

Technodolly

The Slider

Gamma Ray Digital Inc

rebotnix Technologies

FJS International, LLC

Metropolis Post

Opal

CineTape

Paralinx LLC

Willys Widgets

CineLab

Media Blackout - Custom Cables and AKS

Tai Audio

Broadcast Solutions Inc

Wooden Camera