Why is metering not more automatic and based on the Raw histogram? Locked

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JasonTheBirder
JasonTheBirder Senior Member • Posts: 3,904
Why is metering not more automatic and based on the Raw histogram?

It seems our cameras are very sophisticated today, but metering seems somewhat archaic. Why can't cameras just calculate the exact exposure so that the Raw histogram is exactly exposed to the right?

Or maybe this could happen even with the JPEG histogram? For example, my Panasonic G9 has zebras that activate on areas that become 105% exposed in the jpeg histogram. Sometimes while looking through the viewfinder they appear and I adjust the exposure compensation quickly just so they don't appear...but it seems like this would be an easy thing for the camera to do automatically, no?

It seems like if the camera can calculate zebras quickly it should also be able to calculate a perfect Raw exposure without any intervention. Of course, the user should still be able to override it, say if you're going for a specific effect, but I don't understand why there isn't a fully automatic mode that gets exposure perfectly right.

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Panasonic Lumix DC-G9
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