Pixel density revisited

Started Oct 22, 2008 | Discussions thread
DMillier Forum Pro • Posts: 21,002
Re: Pixel density revisited

I don't think there is value in getting personal.

It seems to me that you have fixated on an idea that is incorrect and that is binding you to a reasoning process that is incorrect.

The file size of a particular camera at native resolution is fixed eg a 6MP sensor typically records a 3000 x 2000 pixel file.

However, this file can be output at any size: 3 x 2 inches, 6x 4, 10 x 8, 30 x 20, anything you like. The choice of output size is deterimined by you the user. There is no native or natural output size, it can be anything you like.

What there is, is some recommended maximum output sizes for good quality viewing. For example, it is often considered that the typical human vision can resolve a maximum of 300 separate points per inch of (say) printed output.

That means for good quality prints you want to pick a size that gives that kind of uninterpolated ppi on the print eg for a 6Mp file, a 10 inch wide print gives 300ppi on the print and is therefore commonly regarded as about as good as the unaided eye can see.

Your idea that there is something special or unique about 100% viewing is false: it is simply the maximum screen viewing size you can have without blockiness. There is nothing "native" about it.

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