Sorry guys, but it's probably not a glass prism

Started Sep 5, 2007 | Discussions thread
OP David Kilpatrick Veteran Member • Posts: 5,436
Re: Sorry David, but it IS definately a glass prism!!

dkloi wrote:

Well, there is one way of decreasing moire and not losing too much
resolution and that is by a frequency dependent optical low pass
filter. If the red and blue components can be smeared more than
green, then chroma spatial resolution is sacrificed in return for
better moire resistance but luminance resolution would be less
affected. It'll come down to actually testing the cameras to see just
how well they have designed the AA filter.

Minolta already had that patented under another use. It was used in the Portrayer Set P, a layer-coated soft focus filter which used selective scattering of green light to soften defects in skin tones without losing the definition created by red and blue. A diffraction-based, thin film deposition, portrait filter.

Reverse the concept, leave green intact and scatter red and blue, and you have their AA filter, I guess.

OCLI eat yer heart out!

David

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