Digital BW, The Print

Doubt if you'd need anywhere near that.  You can take a readable picture
of a license plate from a space satellite, and they sure don't use film,
and it's  certainly not in the terrabyte class. 

Jerry

Truman Prevatt wrote:
> 
> When I was with Fairchild Weston some years back I heard one of the guys
> from the our sister division Fairchild Camera and Instrument (the people
> who developed the cameras for the U2, SR-71 and others) talk about this.
> With the camera off the SR-71 you could read a license plate of a car
> some 400 kmeters away. Now that's resolution. He also said the digital
> information content - what it would take to build an EO camera to
> compete - was in the 10's of terebytes.
> 
> Truman
> 
> Paul Roark wrote:
> 
> >>>I have now abandoned that approach, but only in part.  Now I find
> >>>grain to
> >>>be, relatively, a more serious problem than sharpness.
> >>>
> >>>
> >
> >
> >
> >>You just need a bigger negative Paul - you need to start at 8x10    :-)
> >>
> >>
> >
> >I actually have an 8x10 head for my enlarger.  However, I used 8x10 mostly
> >for internegatives, including digital ones.
> >
> >I've always thought it would be fun to have one of the spy-plane's huge
> >roll-film cameras.  I once read that those puppies resolve 80 lp/mm over an
> >entire 8x10 negative area.  Now that's what I call information capture.
> >Hmm, how many terabytes of RAM would I need to scan & manipulate that image
> >at 4000 ppi (high bit depth, of course)?
> >
> >Paul
> >
> >
> >
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> [Non-text portions of this message have been removed]
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> 
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