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Digital BW, The Print

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RE: [Digital BW] Digest Number 1514

2003-05-21 by Austin Franklin

> So do the math.   It takes (a MINIMUM
> of) two pixels to resolve a line-pair.

Correct, but only if the two pixels line up with the line pair.  That is the
best you can expect.  It's actually a range...between two and four pixels to
resolve a line pair.  To "reliably" detect a line of width N, you need to
sample at 1/2N, but that doesn't mean that N is the limit of your
resolution, as I stated above.  The limit is 1/2N, but not with %100
reliability.

> So get over it: digital sensors are NOT as sharp as film.

Hum.  Actually digital sensors are sharper than film...but that doesn't mean
they resolve more.  Sharpness and resolution are two different things.

Regards,

Austin

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