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Answer:
While today's digital camera backs are capable of capturing large amounts
of image data, as an integrated system the Cruse scanner offers the following
significant advantages:
Focus: When using a digital camera back, focus can only be set
visually on the camera's ground glass. Focus may look good in the viewfinder,
but still not be optimized for the camera back's CCD sensors.
The Cruse scanner relies on a complex software algorithm to achieve extremely
accurate focuses for all scanner setups./ While rarely required, focus
can be optimized by the scanner operator for any particular job. Since
the Cruse scanner does not utilize a focus knob or ground glass, no element
of human error is introduced, ensuring maximum sharpness on all scans.
Lighting: Even illumination of any subject using portable lighting
is extremely difficult. As a result, camera scans must often be digitally
retouched, adding to both production time and labor costs.
Cruse scanners are available with our patented Synchron lighting
system, which provides even illumination across the surface of the original,
while subjecting it to far less light exposure than other methods of illumination.
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Lens Resolution: Pixels on most digital camera backs are 8 microns
apart, and most standard lenses will not resolve an image this small.
As a result, data is not accurately placed on each pixel, lowering the
resolution of the scan.
Lenses used in Cruse scanners are ultra high resolution, and are specially
modified to address our unique needs.
Squareness of Camera to Subject: When using a tripod setup, it
is impossible to "square" a digital camera perfectly to a wall-mounted
subject. As a result, the out of square scan can be difficult to stitch,
and sharpness across the entire original setup will be compromised.
Extreme care in design, manufacture and installation of
our scanners ensures that our scanning head is perfectly square with our
holders.
Squareness of the Digital Back: During the three-year
development of the Cruse scanner, all available digital camera backs were
tested for inclusion in our system. None tested was found to be perfectly
square, resulting in one or more corners being out of focus. Since we
could not use "off-the-shelf" components, we were forced to
develop our own scan head to meet our stringent requirements.
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