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Old 09-06-2016, 05:19 AM
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gregbradley is online now
Join Date: Feb 2006
Location: Sydney
Posts: 16,343
There absolutely is a QE difference between mono and colour. A large one.

The Bayer matrix is RGGB so every pixel has a coloured filter over it. The coloured filters between manufacturers have different transmission rates and the trend has been to increase the transmission rates to improve high ISO performance in digital cameras.

But using a KAF or KAI chip as an example (as they have published figures) say the KAF8300, the mono has a QE of around 56-60% (60% is the no cover slip version) and the colour is probably more like 25-35%.

So yes typically double or more QE than the OSC. Having used both a mono 11002 sensor and the colour version of it I can attest to this large difference in QE in actual use.

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