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Nizo Pro + ext. light meter


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#1 Liam Dale

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Posted 26 March 2007 - 06:42 PM

In the Nizo manual it says that using a handheld lightmeter will not give accurate results. I assme this is because of light loss in optics and the internal meter compensating for them to get a correct exposure. I think there are some times when it would be nice to use a handheld meter, or impractical to use the internal meter, so I was wondering if anyone knows how much to adjust a meter reading to give a proper exposure. Thanks.

Liam
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#2 Super8Guy

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Posted 06 March 2008 - 11:42 AM

I shoot Kodak Super 8 Color Negative.
I use a light meter.
I often take a reading and shoot Negative film one stop over.

Also, I have shot a slate with a color chart on it.
I shoot an exposure with the built in light meter.
Than I tak a light meter reading.
Typically I take detailed notes.
The I get the film developed and transferred to tape.
I supervise the transfer.
I can see the results.


It works for reversal Suer 8 film as well.

Also, I use the built in meter
and compare it to my hand held meter - A Spectra.

SUPER 8 ASA
Also, the notches on a Super 8 Cartridge set the ASA.

KODAK 500T
- Your camera may set that at 400ASA

KODAK 200T
- Your camera may set that at 160 ASA

Ektachrome 100D
I do not know what that set a camera's ASA

FILM LAB
I recommend talking with guys at Super 8 Film Labs
Get more info.

YaleFilmAndVideo.com - Kieth

SpectraFilmAndVideo.com - Doug

I use a light meter.
I over expose Super 8 Color Negative at least one stop.

Cameras
Canon 1014XL-S
Nizo 800 Macro

JOHN LONGENECKER
800 470-4602
http://Super8Guy.com
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#3 Jim Carlile

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Posted 08 March 2008 - 03:35 AM

The Kodak protocol for VISION 200 is to speed-notch the cartridge at ASA 160T and then use the notchless cartridge (the lack of a filter notch at the bottom) to key the camera to ASA 100. That makes it one-stop overexposed by design-- that's what Kodak recommends.

The Nizo will take away about a stop of light on its own that the meter would normally compensate for. So the best thing to do when metering externally is test and keep a log, always bracketing exposures to see what happens because much depends upon the accuracy of the meter readings even when dialing-in f/stops manually.

But roughly, figure about opening up an additional one-stop if you use an external meter. If you want to overexpose negative stock-- which is recommended-- then either rate the film at ASA 100 (or whatever) or open up the aperture a little more.
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