From: Tom B Whiteside (email suppressed)
Date: Wed Nov 14 2007 - 07:37:17 PST
At really high numbers of multiple exposures (this chart goes to 32; I've
never worked more than 5) what would seem to be more important than your
f/ stop is what's in the frame - ie, location of the dark areas. Once an
area is overexposed, stopping down on your next exposure is not going to
reverse that. More to the point, where are you going to find 8 stopping
points between f/3 and f/4? According to the chart below, that's how many
steps there are to be accounted for between 8 exposures and 16. Wow, at
that point it's rarefied air.
I thought that the smallest practical (ie, noticeable) increment is 1/3 of
a stop. Does decreasing exposure 1/10th of a stop actually make a
difference between exposure #8 and #9? Does such an increment exist in the
practical world? (Theoretically, sure........) If you are working on an
optical printer or an animation stand you can manage that level of control
working with dim light and s-l-o-w shutter speeds. What are the smallest
value ND filters? Surely there's nothing like 1/10 of a stop.
So here's a good test - somebody shoot multiple exposures of a gray card
according to the chart below. Post the results on YouTube. Hah!
- Whiteside
Esther Urlus <email suppressed>
Sent by: Experimental Film Discussion List <email suppressed>
11/14/2007 04:16 AM
Please respond to
Experimental Film Discussion List <email suppressed>
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Subject
Re: Multiple Exposures
hi shumona,
i once got this very reliable exposure index of tony hill
worked always perfect for me
esther
WORM.filmwerkplaats * Achterhaven 148 * 3024 RC Rotterdam * www.wormweb.nl
* email suppressed * +31(0)10 4762290
Number of exposure Number of ƒ 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
> Hi Frameworks,
>
> I'm shooting 16mm on a bolex and am doing some multiple exposures (2 -
5)
> layers. I was wondering how to compensate the exposure... Any
> suggestions?
>
> Thanks!
> Shumona
>
> Quoting Steve Polta <email suppressed>:
>
>> Coincidentally, I just bought a digital recorder for
>> Cinematheque to use to record artist presentations and
>> intverviews. I'm sure the Zoom H4 that others a
>> recommending but we actually had one for a while that
>> was kind of a pain in the neck--it was great but was
>> too complicated for an untrained person (say, an new,
>> short term intern) to use intuitively. So I bought the
>> Zoom H2 (and returned the H4). We'll see how I like it
>> when it arrives but a friend (who does interviews)
>> highly recommends it.
>> product description/review:
>
www.oreillynet.com/pub/a/oreilly/digitalmedia/2007/09/13/review-zoom-h2-surround-recorder.html?page=1
>> good amazon reviews too of the H2
>> But I don't know much more. I still like mini-disc for
>> personal recordings, fwiw.
>> Steve Polta
>> San Francisco Cinematheque
>> --- andrew lampert <email suppressed> wrote:
>> > Hi
>> >
>> > I realise that I'm inviting a lot of opinions and
>> > responses, but if anyone thinks they have a good
>> > answer I'm all ears. I'm looking to buy (or maybe
>> > even rent if what I want is too expensive) a digital
>> > audio recorder with the express purpose of recording
>> > sound that will be used on a stereo optical
>> > celluloid soundtrack. There are a lot of options on
>> > the market and I've not had experience with any of
>> > them which is why I ask such a broad question. I
>> > can see myself recording voices, music, field
>> > recordings, etc, and using it for other near future
>> > film and video projects. I don't like using
>> > mini-discs and, at this point in time, don't want to
>> > go to DAT. Does anyone have any recommendations for
>> > compact flash card recorders? Anyone here use a
>> > Marantz PMD 660? Feel free to write back off list.
>> >
>> > Thanks,
>> > A.
>> >
>> >
>> >
>> >
>> >
>
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>> __________________________________________________________________
>> > For info on FrameWorks, contact Pip Chodorov at
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>> >
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>
>
> __________________________________________________________________ For
info on FrameWorks, contact Pip Chodorov at <email suppressed>.
>
__________________________________________________________________
For info on FrameWorks, contact Pip Chodorov at <email suppressed>.