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Forum: Photographic Technique
11-26-2008, 12:51 PM
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Well, the light meter is located on the pentaprism, and thus meters the image formed on the focus screen... So, changing the focus screen have (fortunately in the Kx0 case!) an impact on the metering process...
And before you ask, the AF module is located beneath the mirror, and so is not impacted whatsoever by a focus screen change.
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Forum: Photographic Technique
11-26-2008, 09:09 AM
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Well, I think this is exactly the same problem as with the k10 focus screens...
As the k20 focus screen must be the same, you'll end up with a severe underexposure for lenses above f/3.5, and an overexposure with lenses below f/4.5 (approx.).
As there is nearly no lens with a wide-open aperture below f/4.5, you won't have cases of severe overexposure in everyday use...
But going from the kit lens to the 50 f/1.4, you'll see the difference...
Using a LL-60 focus screen solves this problem...
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