Canon UHD DIGISUPER 86 브로셔
TECHNOLOGY FOR CORRECTING
ABERRATION
Use of a zoom system and floating focus has reduced
the variations in the optical aberrations associated with
zooming and focusing, thereby achieving a level of aberration
correction commensurate with 4K. Furthermore, through the
use of fluorite and UD glass and by means of optimal lens
element groupings, longitudinal chromatic aberration and
lateral chromatic aberration have been minimized. This has
resulted in visually pleasing images on large UHD screens with
minimal loss of sharpness and minimized color fringing on high
contrast edges.
the variations in the optical aberrations associated with
zooming and focusing, thereby achieving a level of aberration
correction commensurate with 4K. Furthermore, through the
use of fluorite and UD glass and by means of optimal lens
element groupings, longitudinal chromatic aberration and
lateral chromatic aberration have been minimized. This has
resulted in visually pleasing images on large UHD screens with
minimal loss of sharpness and minimized color fringing on high
contrast edges.
TECHNOLOGY FOR PROCEssING
Ultra-HigH-Precision lenses
In order to support the trend for 4K to offer ever-higher levels of definition, lens
element surface precision higher than that for HD lenses is required. To this end, an
advanced new lens processing technology and high-grade measuring technology
that Canon had been developing were mobilized, enabling us to come up with the
technology for mass-producing ultra-high-precision lenses that support large-
aperture lenses in the 200 mm-diameter class.
element surface precision higher than that for HD lenses is required. To this end, an
advanced new lens processing technology and high-grade measuring technology
that Canon had been developing were mobilized, enabling us to come up with the
technology for mass-producing ultra-high-precision lenses that support large-
aperture lenses in the 200 mm-diameter class.
TECHNOLOGY TO ACHIEvE
Ultra-HigH-Precision ProdUction
When it comes to 2/3” 4K, even the slightest dimensional errors
or assembly errors in the components used can significantly
affect the images obtained. Canon accordingly increased the
precision of the key optical components and their individual
mountings while simultaneously combining precision assembly
tools and measuring equipment to improve the precision levels
of assembly and adjustment.
or assembly errors in the components used can significantly
affect the images obtained. Canon accordingly increased the
precision of the key optical components and their individual
mountings while simultaneously combining precision assembly
tools and measuring equipment to improve the precision levels
of assembly and adjustment.
TECHNOLOGY FOR MINIMIzING GHOsTING
With the emergence of high dynamic range (HDR) cameras the design of the
associated lenses acquire a whole new importance. Very sophisticated multilayer
optical coatings are deposited on every lens element surface to elevate the light
transmission through the lens while curtailing the optical reflections that can
contaminate scene black level with flare and veiling glare. The goal is to elevate
the contrast level of the nominally exposed scene to the highest degree possible
– a key aspect of increasing dynamic range. In addition, the lens must reproduce
specular highlights within the scene as faithfully as possible without any attendant
stimulation of optical ghosts. Here too, the optical anti-reflection coatings play
a pivotal role. The separate optical ghosting that can be stimulated by off-axis
highlights (from the sun and other excessive highlights) are carefully managed by a
multi-strategic design entailing internal mechanical structures.
associated lenses acquire a whole new importance. Very sophisticated multilayer
optical coatings are deposited on every lens element surface to elevate the light
transmission through the lens while curtailing the optical reflections that can
contaminate scene black level with flare and veiling glare. The goal is to elevate
the contrast level of the nominally exposed scene to the highest degree possible
– a key aspect of increasing dynamic range. In addition, the lens must reproduce
specular highlights within the scene as faithfully as possible without any attendant
stimulation of optical ghosts. Here too, the optical anti-reflection coatings play
a pivotal role. The separate optical ghosting that can be stimulated by off-axis
highlights (from the sun and other excessive highlights) are carefully managed by a
multi-strategic design entailing internal mechanical structures.
New BCTV LeNses DesigNeD To ACCeLerATe The pACe of
4K UhD CoNTeNT CreATioN
As 4K continues its steady integration into mainstream television dramas, documentaries and movies, Canon has worked to be
at the technological forefront with our innovative Cinema EOS series and development of 4K Optics. The needs of broadcast
television producers to achieve the high image quality of 4K UHD and more powerful ways of expression are now spreading to
live telecasts of sports, concerts, and events. The imperative need for 4K lenses that can offer the long focal ranges that are
central to contemporary sports coverage while maintaining the usability and ease of operation that the broadcast industry favors,
is increasing at a rapid pace. In response to these new marketplace needs, Canon is offering lenses whose performance neatly
dovetails with the various new 2/3” small-format 4K UHD cameras as part of our onward drive to support this new movement. By
offering lenses that fit in with the applications and objectives of users, Canon is taking steps to actively open up new dimensions of
potential in video performance. 4K images can convey such a sense of presence and an almost 3-dimensional feeling that viewers
sense they are actually involved in the action; through such images, these lenses can impart new values to user content and allow
viewers to experience videos in new and fresh ways.
at the technological forefront with our innovative Cinema EOS series and development of 4K Optics. The needs of broadcast
television producers to achieve the high image quality of 4K UHD and more powerful ways of expression are now spreading to
live telecasts of sports, concerts, and events. The imperative need for 4K lenses that can offer the long focal ranges that are
central to contemporary sports coverage while maintaining the usability and ease of operation that the broadcast industry favors,
is increasing at a rapid pace. In response to these new marketplace needs, Canon is offering lenses whose performance neatly
dovetails with the various new 2/3” small-format 4K UHD cameras as part of our onward drive to support this new movement. By
offering lenses that fit in with the applications and objectives of users, Canon is taking steps to actively open up new dimensions of
potential in video performance. 4K images can convey such a sense of presence and an almost 3-dimensional feeling that viewers
sense they are actually involved in the action; through such images, these lenses can impart new values to user content and allow
viewers to experience videos in new and fresh ways.
CANoN’s TeChNoLogies ThAT AChieVe 4K
Each 2/3” small-format 4K pixel is equivalent to approximately 2.5 m, which is one-half of the size of the 2/3” HD pixels. These
are approximately 1/2.7 smaller than the pixel size of the 4K Super 35mm image sensor. This means that, for these lenses, it is
extremely important to establish the high-grade design and production technologies that will help ensure the requisite 4K UHD
image sharpness while minimizing optical aberrations. Described below are the latest technologies Canon has developed and is
utilizing to achieve these goals.
are approximately 1/2.7 smaller than the pixel size of the 4K Super 35mm image sensor. This means that, for these lenses, it is
extremely important to establish the high-grade design and production technologies that will help ensure the requisite 4K UHD
image sharpness while minimizing optical aberrations. Described below are the latest technologies Canon has developed and is
utilizing to achieve these goals.