On Jan 9, 2006, at 12:15 PM, John Forbes wrote:
2 Because the captured image is smaller, more magnification is
required to make a final image of a given size. This means that
lenses which seem soft on film will seem softer on digital.
A thought experiment:
Let's assume that we have two cameras with digital sensors with
8Mpixel resolution, one sized to 16x24mm and one sized to 24x36mm.
Further, let's assume that that we have a 35mm lens and a 50mm lens
which demonstrate exactly equal performance.
Fit the 24x36mm camera with a 50mm lens, fit the 16x24mm camera with
the 35mm lens. Then take a photograph of the same subject with each
of the two cameras, framed and exposed identically, to RAW format
files. Process them for identical tonal rendering. Do not apply any
sharpening. Print them to 10x15 inch image area on 11x17" paper.
Which one will look sharper and why?
Feel free to use math... ;-)
Godfrey
