We all know there's a "ceiling" for CCD quality. We've read
before about a paradox, that as CCDs or CMOS image sensors get
better, they get worse. As you increase the number of pixels to
make the picture sharper, you must reduce pixel size, which makes
pictures softer. It would take a technological breakthrough, or at
least a lot of rethinking, to resolve these conflicts, and others
just as vexing. If you've been hearing the buzz these past few
weeks, you've heard the breakthrough has been made. Or so it seems
on paper.
An announcement by Foveon, two weeks before PMA, described the CCD
rethought. Another announcement by Sigma described something more
than just thoughts. The new SD-9 digital SLR, similar to Sigma's
SA-9 35mm model, would ship in the spring, using a CMOS-based
imager from Foveon-dubbed the X3-that sucks the doors off
everything. The camera would sell for under $3k - the latest
pricing "sweet point" in the pro camera market-while a year from
now, or two, cameras under $1k and even $500 could appear. All with
a tremendously sharper, simpler, less expensive, more
energy-efficient way of making digital pictures.
Is this where we turn the corner?
Everyone's quite sure the answer is maybe. That's about all they
agree on. How much sharper is the new chip, exactly? That's hard to
say. You'll hear it likened to 3.4, 7, and 10.5 megapixels. The
definition of "pixel" itself comes into the question. If the
uncertainties are that basic, don't look for quick ways to describe
the new system. "Look at the pictures," they suggest at Foveon
HQ.
If you have a background in studio photography, you know Foveon
well. If you don't, well, you don't. Foveon showed-up in public in
the summer of '99, in a refined and low-key reception at the
International Center of Photography. Amid wine and, probably,
cheese, the first Foveon camera was shown-off. Camera? Well, a big
Canon lens, and a bracket to hold it. It and some new kind of
imager, that nobody wanted to talk much about. Behind this
assemblage and firmly attached, a notebook computer, its screen
erect to serve as camera viewfinder.
Call it Foveon's first mystique. At first thought it seems odd, a
lens and a computer. Then it seems quite natural. Then quite
attractive. What else is any digital camera, after all, but a lens
up front, a computer out back? The Foveon camera was the essential
digicam, simple, yet definitive. But look at that big viewfinder.
And hey, a full keyboard, for captions and notes. Stick a telephone
line into its modem ...
The Foveon camera made tremendous sense, on paper. And, through its
early trials, it made sense to the studio market too. By photokina
2000, Hasselblad was taking a look. Off-floor demos of an
experimental scientific camera reinforced the impression that
whatever else it was doing, Foveon was thinking.
That was sort of a comforting thought. The year 1999 was probably a
watershed for get-rich investor games in the photo biz. As in other
fields, photography attracted its high-tech hypsters and their
sound-alike schemes.
Foveon's schemes sounded distinctively their own, and they seemed
to work. Equally important, the people on-staff had real pedigrees.
Industry lifers describes some of 'em, having cut teeth at places
like Hasselblad or Apple. The gent preparing the guest list for
that first Foveon evening was Ray Demoulin, "Saint Ray" in his days
as Kodak V.P. in charge of Professional. When Kodak opened the
visionary Center for Creative Imaging in 1991, it was largely
a Demoulin design. A lot of today's who's whos first
commingled
at CCI.
You say you have a radical new technology you want to sell, one
that changes everything about the whole photography business? Yep,
it could be a big help, especially in 2002, if your people look
like they're for real.
The second mystique
In a way, the new Foveon chip seems too simple. Foveon themselves
describe its guiding principle as "well-known." If it's so
well-known, how come everyone else missed it? Yup, it's good if
your people look like they're for real.
But the product's simplicity, in pursuit of the most complex
improvements, sounds like something we've heard before, a second
Foveon mystique. The first, in the form of the camera, reduced
things to essentials, and so does the Foveon X3. On paper at least,
it uses a natural quality of silicon to accomplish something that
artificial ingredients have heretofore tried.
That something is to make an image sensor see color. CCDs and CMOS
chips are basically monochromatic, requiring filtered light to
reconstitute color. In standard imager practice, each diode or
photosite (or "pixel") on the chip gets a primary-color filter (RGB
or CYM, depending). It takes three of these filtered photosites to
make one full-color part of the picture.
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