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RE: filmscanners: NIKON LS 4000 AND D1X



> > > There is one good thing about that tough. The CCD require that the
> > rays
> > > come in at 90 degrees.
> >
> > No they don't.  Different CCDs and different CCD designs have
> > different
> > acceptable angles.  It is true that with wide angle lenses, you do
> > get
> > falloff at the edges, and it is probably worse than film in certain
> > CCD
> > designs.
>
> Well, sure they don't require it if you don't care about the fall off.

NONE of them "require" 90 degrees!  If they did, you would only get a single
ray in the center!  All CCDs used in cameras have SOME angle of view before
they falloff.

> And yes, it is true that some CCDs are more suspectable to it then
> others which depends on the design and angle. But then on an SLRs (as
> the 1Dx we are talking about) you can have so many different lenses
> from 1800mm to one with a 220 degree coverage that you can't really
> cover all angles.

Why not?  If a CCD is designed such that it accommodates these lenses, as
well as any film can, then what's the problem?  This is a relatively new
issue to CCD designers and processes.  I have no doubt that this issue will
be less and less with new CCDs.

Do you even have ANY idea what lense starts to show falloff on the 1Dx?




 




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