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<blockquote data-quote="J-see" data-source="post: 387322" data-attributes="member: 31330">The light-metering in digital cams still gets me. I wonder why they have to finalize the exposure adjustments done according the lightmeter.The data my sensor collects is only affected by two things: aperture and shutter speed. Regardless how I meter or what I compensate, this data remains identical. Yet when I overexpose a shot and the underexpose an identical one while using the same aperture and shutter, after normalizing the exposure of both in post, they should be pixel-identical. That's what I expect when RAW collects pure data. In my experience this is not true which implies the lightmeter affects the values of the data when stored.That's exactly the thing that bugs me. I see no logical reason why this has to be done as a permanent adjustment to the RAW file. Why can't it, just like WB or saturation, be done as a digital post-manipulation?Now it appears the lightmeter turns exposure a bit into something like JPEG mode.</blockquote>

[QUOTE="J-see, post: 387322, member: 31330"] The light-metering in digital cams still gets me. I wonder why they have to finalize the exposure adjustments done according the lightmeter. The data my sensor collects is only affected by two things: aperture and shutter speed. Regardless how I meter or what I compensate, this data remains identical. Yet when I overexpose a shot and the underexpose an identical one while using the same aperture and shutter, after normalizing the exposure of both in post, they should be pixel-identical. That's what I expect when RAW collects pure data. In my experience this is not true which implies the lightmeter affects the values of the data when stored. That's exactly the thing that bugs me. I see no logical reason why this has to be done as a permanent adjustment to the RAW file. Why can't it, just like WB or saturation, be done as a digital post-manipulation? Now it appears the lightmeter turns exposure a bit into something like JPEG mode. [/QUOTE]

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