(old hand)

08/11/2007 19:37

Re: Infinity closer than you think?

Thanks guys for the assistance and the links.

I'm interested that beejaybee says what I thought:

Quote:

the "object distance beyond which a lens of a given focal length images all planes equally sharply" depends on the lens aperture as well as the focal length

Going back to Mr Crawley again, he says "Note that this figure is irrespective of aperture, the introduction of which as a factor is a question of field depth not of virtual infinity per focal length."

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