incorrect. a 1:1 reproduction of an object 10mmx10mm is 10mmx10mm
regardless whether it is on a sensor, a piece of film or a wall.

size of the format does not enter the equation.

best,
mishka

On 3/15/07, Godfrey DiGiorgi <[EMAIL PROTECTED]> wrote:
> So at 1:1 magnification, a Pentax DSLR will image a 16x24mm subject
> area.
...
> So at 1:1 magnification, a Pentax 35mm SLR will image a 24x36mm
> subject area.
>
> etc
>
> The key thing is that the number of pixels or the density of the film
> is irrelevant to magnification, which is what the example was
> attempting to show.
>
> G

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