Jump to content


Photo

Choosing Filters


  • Please log in to reply
1 reply to this topic

#1 Alex James

Alex James

    New

  • Basic Members
  • Pip
  • 5 posts
  • Student

Posted 16 August 2012 - 07:03 AM

Hi Guys,

Another question. I am using matte boxes and 4x4filters.

How do you guys get the right filtration say I need an nd.2 for this scene.

Do you spot meter? or Just get an average?

So how do you choose your filters?

Thanks
  • 0

#2 Adrian Sierkowski

Adrian Sierkowski
  • Sustaining Members
  • 7117 posts
  • Cinematographer
  • Los Angeles, Ca

Posted 16 August 2012 - 07:14 AM

Well with ND it's kinda simple. If you're outside, let's say, and you're at a F5.6 and you want to be at an F4 (for focus reasons) you grab an ND.3
It works on base 3 so .3 is 1 stop .6 is 2, .9 is 3 1.2 4 ect....
Now, if you're talking about how you know how much to bring it down in the first place, yes, you'd wanna meter. Spot or incident is fine-- depending on what you're metering. Or, conversely, you can often just look at the image if on video.
Of course you have to actually know how to use a light meter before you can really do any of this (and you'd be surprised how many people don't seem to understand how to use a light meter these days...)

After awhile you'll know how much to bring things down through experience. For example; I've screwwed up plenty with ND grads and the sky so I know that, really, I don't often want to go above a .9 ND grad (and normally stick to about a .6)
  • 0


Tai Audio

CineTape

FJS International, LLC

Media Blackout - Custom Cables and AKS

Paralinx LLC

Glidecam

Ritter Battery

Wooden Camera

Broadcast Solutions Inc

Technodolly

Aerial Filmworks

Gamma Ray Digital Inc

Rig Wheels Passport

Visual Products

rebotnix Technologies

Metropolis Post

The Slider

Abel Cine

Willys Widgets

Opal

CineLab

Gamma Ray Digital Inc

Abel Cine

Opal

Technodolly

Visual Products

Paralinx LLC

rebotnix Technologies

Wooden Camera

Tai Audio

Broadcast Solutions Inc

CineTape

CineLab

The Slider

Ritter Battery

Metropolis Post

Aerial Filmworks

Media Blackout - Custom Cables and AKS

FJS International, LLC

Willys Widgets

Rig Wheels Passport

Glidecam