Why are 4/3 sensors behind the curve?

Started May 8, 2009 | Discussions thread
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Tom Davenport
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Why are 4/3 sensors behind the curve?
May 8, 2009

First of all I'd like to say I'm not here to bash Olympus or the 4/3 system. In fact I just purchased an E-620 and plan to invest in some lenses. What I don't understand is why the 4/3 sensor performance is behind the curve when it comes to high ISO performance, dynamic range, RAW headroom etc. Some point the finger at sensor size but I don't buy that. For example, the E-520 sensor has a pixel density of 4.1 MP/cm² while the Canon 50D has a pixel density of 4.5 MP/cm². But from what I've seen the 50D trounces the E-520 when it comes to high ISO performance, dynamic range, RAW headroom, etc. What gives? How long do you think until we'll see 4/3 sensors as good as the competition for a given pixel density?

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