Техническое Руководство для Hasselblad h4d-200ms
digital CaMERaS
www.hasselblad.com
Single-shot
the key to the single-shot quality from a CCd sensor is the use of a
Bayer Mosaic filter. this is a specific filter layout that is used in con-
junction with software to interpret the color data from the sensor. a
single-shot system delivers one colour per pixel, and the remaining
two channels must be estimated and calculated using a best guess
strategy. this is done in Hasselblad cameras by using algorithms
that optimize color rendition and sharpness without disturbing the
perception of the human eye by the artefacts always present in raw
single shot captures.
the key to the single-shot quality from a CCd sensor is the use of a
Bayer Mosaic filter. this is a specific filter layout that is used in con-
junction with software to interpret the color data from the sensor. a
single-shot system delivers one colour per pixel, and the remaining
two channels must be estimated and calculated using a best guess
strategy. this is done in Hasselblad cameras by using algorithms
that optimize color rendition and sharpness without disturbing the
perception of the human eye by the artefacts always present in raw
single shot captures.
the Bayer Mosaic filter pattern covers the pixels of the sensor.
Moving the sensor in one pixel increments between shots, allows
for the exact R, g, B values to be captured in every pixel. the mul-
tiple captures are then assembled to deliver the correct colors and
ultimate definition of detail.
adding captures, each offset by a ½ pixel sensor movement, creates
space for extending the sensor resolution from 50Mpix to 200Mpix.
the outstanding definition of color and detail is maintained.
Moving the sensor in one pixel increments between shots, allows
for the exact R, g, B values to be captured in every pixel. the mul-
tiple captures are then assembled to deliver the correct colors and
ultimate definition of detail.
adding captures, each offset by a ½ pixel sensor movement, creates
space for extending the sensor resolution from 50Mpix to 200Mpix.
the outstanding definition of color and detail is maintained.
Multi-shot
the advanced Hasselblad Multishot (4-shot) technology eliminates
the issues that the single-shot interpolation routine can sometimes
introduce, such as moiré and color rendering issues, by physically
moving the sensor 1 pixel at a time, thereby capturing the red, green
and blue information in each individual pixel point and then combin-
ing these captures into one. this results in a true color and moiré
free capture with increased level of detail as there is no need for
interpolation at all.
the advanced Hasselblad Multishot (4-shot) technology eliminates
the issues that the single-shot interpolation routine can sometimes
introduce, such as moiré and color rendering issues, by physically
moving the sensor 1 pixel at a time, thereby capturing the red, green
and blue information in each individual pixel point and then combin-
ing these captures into one. this results in a true color and moiré
free capture with increased level of detail as there is no need for
interpolation at all.
Ultimate Still Imaging
High precision piezo-electrical actuators control movements of the
sensor in ½ and in one pixel increments. By combining six shots,
offset by a combination of both ½ pixel increments and one pixel
increments, the colors, Red, green and Blue of each point are
obtained with a double resolution in both the X and Y directions.
the result is an astonishing 200Mpixel full color image with no arti-
facts, such as moiré.
High precision piezo-electrical actuators control movements of the
sensor in ½ and in one pixel increments. By combining six shots,
offset by a combination of both ½ pixel increments and one pixel
increments, the colors, Red, green and Blue of each point are
obtained with a double resolution in both the X and Y directions.
the result is an astonishing 200Mpixel full color image with no arti-
facts, such as moiré.