From: Katharine Thayer (kthayer@pacifier.com)
Date: 09/12/00-08:32:24 AM Z
Yes, there was a story on NPR about this last night. It's a new computer
chip that is supposed to make this kind of enlargement possible without
pixelation, and will "make film obsolete." I can't tell you anything
more about the chip itself.
Katharine Thayer
erobkin@uwc.edu wrote:
>
> Since posting the message about the Canon lens I heard a news story that
> said someone
> had developed a CCD with resolution so that "a 4 ft by 8 ft enlargement
> showed no pixilization or artifacts" Now that may be from interpolation
> and smoothing and have only pr meaning or it may be real. Anyone hear
> about this? If that is a CCD of a size to fit in a 35 mm SLR style body
> then the Canon lens idea coupled with that much resolution would be
> a revolution indeed. If I see any followups on it I'll post them here.
>
> Eugene Robkin
>
> -----Original Message-----
> From: alt-photo-process-error@skyway.usask.ca
> [mailto:alt-photo-process-error@skyway.usask.ca]
> Sent: Tuesday, September 12, 2000 12:36 PM
> To: alt-photo-process-l@skyway.usask.ca
> Subject: Re: Advances in lens design
>
> I don't know anything specific, but the concept is right. So I would say
> that
> it's not PR, it's real. I shudder to think of what one costs.
>
> Dave
>
> erobkin@uwc.edu wrote:
>
> > I pulled the following stuff off the web. Those of you with an interest
> > in some of the technical sides of photo lenses may find it worth looking
> at.
> > It looks like the capability of lenses to capture information is taking
> > another big step beyond the ability of the CCD/digital duo to record it.
> >
> > Anyone with additional information about any of this? Is it PR and not
> > science?
> >
> > Eugene Robkin
> >
> > -------------------------------------
> > Canon has announced development of the world's first 'Multi-layer
> > Diffractive Optical Element'. A prototype Canon EF 400mm f4 DO IS USM
> > lens incorporating this element will be exhibited at Photokina 2000
> > (Cologne, 20 to 25 September). A commercial version is expected in the
> > first half of 2001.
> >
> > By combining a Multi-Layer Diffractive Optical Element and a refractive
> > optical element within the same optical system, chromatic aberration,
> > which adversely affects image quality, can be corrected even more
> > effectively than with a fluorite element. Also, through minute
> > adjustments, the diffractive optical element makes possible the same
> > optical characteristics as a ground and polished aspherical surface,
> > which effectively corrects for spherical and other aberrations.
> >
> > Further details are available at
> >
> > www.canon.com/do-info/index.html
> >
> > ---------------------------------
> >
> > The following site describes some of the manufacturing techniques that
> > may be involved in the Cannon design.
> >
> > http://www.takeuchi.mce.uec.ac.jp/papers/upmm/1999-08e/
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