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Spectra P 251 manual


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#1 andres victorero

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Posted 27 April 2006 - 04:39 PM

Hi i just get a spectra model P-251 , and I´m looking for a manual for this meter ... anyone knows where can I find one? thanks
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#2 Laurent Andrieux

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Posted 27 April 2006 - 06:47 PM

You don't really need one.

The flat disk is for metering flat objects and illumination (in foot candles - without slide)

The sphere is for metering incident light

The "bee eyes" like glass or grid is for metering reflected light

The slides have to be used accordingly to the film sensitivity you are using.

Here's a link I found with a 2 seconds google search. It describes it pretty well.

http://www.spectraci.../product_9.html
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#3 andres victorero

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Posted 28 April 2006 - 03:59 AM

You don't really need one.

The flat disk is for metering flat objects and illumination (in foot candles - without slide)

The sphere is for metering incident light

The "bee eyes" like glass or grid is for metering reflected light

The slides have to be used accordingly to the film sensitivity you are using.

Here's a link I found with a 2 seconds google search. It describes it pretty well.

http://www.spectraci.../product_9.html


Thanks for your reply. yes I saw the spectra web page, but how can i chose the camera frame rate or speed in this meter?

thanks
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#4 Laurent Andrieux

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Posted 28 April 2006 - 04:33 AM

You can't compute such parameters in this meter. It's calibrated for a frame rate of 25 fps. Then you have to do "translations". Like shooting 50 fps is 1 stop loss, equivalent to sensitivity divided by 2. May be there is a table at the back of it.
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#5 andres victorero

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Posted 28 April 2006 - 06:04 AM

Thanks laurent A, the info is much apreciated.

regards
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