Whoa! Keep in mind that at some point your exposures would fall below the straight-line portion of the characteristic curve (about 3-4 stops below for neg, 2-3 stops below for reversal). Once you're into the toe with each of your exposures, you'd want less reduction. But really, in my experience, once you get past about 4 or 5 exposures your variables in terms the tonal content of each pass and exposure factors are too great to rely on linear math...that's when you're better off using intuition and testing.
-Jason Halprin
________________________________
From: Zachary Iannazzi <gleanslower_at_gmail.com>
To: Experimental Film Discussion List <frameworks_at_jonasmekasfilms.com>
Sent: Wednesday, November 9, 2011 3:36 PM
Subject: Re: [Frameworks] double exposure
Hope this helps,
someone else posted this chart for multiple exposures here a while ago.
Number of exposure - Number of stops under exposure
1 - 0
2 - 1
3 - 1.5
4 - 2
5 - 2.25
6 - 2.5
7 - 2.75
8 - 3
9 - 3.1
10 - 3.25
11 - 3.35
12 - 3.5
13 - 3.6
14 - 3.75
15 - 3.8
16 - 4
20 - 4.25
24 - 4.5
28 - 4.75
32 - 5
On Wed, Nov 9, 2011 at 6:29 AM, Steven Gladstone <Steven_at_gladstonefilms.com> wrote:
On 11/9/11 9:03 AM, mike rice wrote:
>> its simple, if you think of fstops as doubling or halfing light, then
>> yes you would just compensate by stopping down.
>
>I'll add that you have to consider what is being double exposed on, once
>you reach white saturation, no additional exposure will develop any
>image in there.
>
>
>--
>Steven Gladstone
>New York Based Cinematographer
>Gladstone films
>Blog - http://indiekicker.reelgrok.com/
>http://www.blakehousemovie.com
>http://www.gladstonefilms.com
>917-886-5858
>
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Received on Wed Nov 09 2011 - 15:17:04 CST
