How many MP is enough?

Started Apr 26, 2012 | Discussions thread
John Sheehy Forum Pro • Posts: 20,687
Re: How many MP is enough?

sacentre wrote:

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?

Film/digital equivalencies are dodgy, because the two are completely different. Film grain is randomly placed and sized, so it can catch of hint of very high resolution features, which would require a number of pixels which would capture far more detail than the film could, by resolving more thoroughly and consistently. Resolution test charts are best for testing like for like; two different films or two different sensors.

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