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Julius Bjornsson

8-bit DNGs-how is this done?

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While it isn’t really relevant I would like to point out that the RGB filters of Nikon’s 3D Color Matrix sensor are not arranged in a Bayer pattern (as claimed here). The metering sensor has an equal amount of pixels sensitive to red, green, and blue; these are arranged in a striped pattern so that all the sensor pixels within a column share the same filter colour.

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While it isn’t really relevant I would like to point out that the RGB filters of Nikon’s 3D Color Matrix sensor are not arranged in a Bayer pattern (as claimed here). The metering sensor has an equal amount of pixels sensitive to red, green, and blue; these are arranged in a striped pattern so that all the sensor pixels within a column share the same filter colour.

 

Yes, thanks for pointing that out, it's not a Bayer pattern! it is different as can be seen here:

 

http://www.mir.com.my/rb/photography/hardwares/classics/NikonF5/metering/

 

But that really doesn't change anything, it was just to underline that the statement:

All camera meters and even handheld are set for grey....

Is not correct, the Nikon metering does work with colours.

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Is this relevant to a discussion about Leicas?

 

As far as I can tell from other threads, a lot of the people posting here have Leica M8/M9 and Nikon D3/D3X cameras.

 

As a professional photographer it makes a lot of sense to have and use both systems IMHO

 

Therefore I find it relevant to point out when a mistake is made and /or an an advantage/feature can be used from the other system, works both ways btw.

 

Sorry if have offended your Leica heritage!

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But that really doesn't change anything, it was just to underline that the statement:

All camera meters and even handheld are set for grey....

Is not correct, the Nikon metering does work with colours.

One should also keep in mind that both compact and EVIL cameras use the main sensor for metering and thus distinguish colours. Whether their metering algorithms make use of this (to prevent clipping of a single channel, say) is a different issue.

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Aren't we forgetting that the M8 and M9 measure off the shuttercurtain, from a whitish spot and that color, Bayer patterns, sensors and such don't come into it? The camera is calibrated to 18% grey....

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Not forgotten!

Also there is no software guess involved in that part of the metering on M8 M9.

There is a guess at what aperture the lens is set at when using coded lenses on the camera. Via the little sensor on the front.

 

On a side note; a Nikon set to Center metering is also set for 18% gray.

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Not forgotten!

Also there is no software guess involved in that part of the metering on M8 M9.

There is a guess at what aperture the lens is set at when using coded lenses on the camera. Via the little sensor on the front.

As that is a simple little silicon light meter, this whole color thing doesn't enter into it either.

 

On a side note; a Nikon set to Center metering is also set for 18% gray.
Yes - thank you Ansel Adams....

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