How many MP is enough?

Started Apr 26, 2012 | Discussions thread
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sacentre
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How many MP is enough?
Apr 26, 2012

Not directly related to Canon but what with all the talk about the magapixel count of current sensors and whether or not a large MP Canon body was on the cards, I thought I'd post my question here.

A while ago, there was talk of the "equivalence" of MP count to analogue film grain and seem to recall someone saying that 25MP would be roughly equivalent to ASA 64 or maye it was 25.

Is this sort of equivalence comparison still valid? How many MPs would be considered the equivalent of a Kodachrone ASA 25 slide today? I realise MP is only one factor in IQ and not the whole story but how many would be enough all else considered?

When I look at the MP race which seems to be taking place at the moment, I'm reminded of the over-sampling race that dominated the CD player market at one time and the marketing hype that made us all think higher oversampling meant better sound.

Just wondering.

Trevor

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