The world of television production is beginning to adopt 4K Super 35 mm (S35) image capture for a widening range of program genres that seek both the unique imaging properties of that large image format and the protection of their program assets in a world anticipating future 4K services. Documentary and natural history production in particular are transitioning to this form of production. The nature of their shooting demands long zoom lenses. In their traditional world of 2/3-inch digital HDTV cameras they have a broad choice in portable lenses – with zoom ranges as high as 40:1. In the world of Super 35mm the longest zoom lens is limited to 12:1 offering a telephoto of 400mm. Canon was requested to consider a significantly longer focal range lens while severely curtailing its size and weight. Extensive computer simulation explored countless combinations of optical and optomechanical systems in a quest to ensure that all operational requests and full 4K performance could be met. The final lens design is anticipated to have applications beyond entertainment production, including a variety of security systems.
In 1984 the first real-time HDTV video tape recorder was introduced. The HDV-1000 was an
analog VTR using one inch metal oxide tape and standard SMPTE open reels. It utilized basic Type-C
recording principles although also incorporating a considerably higher FM carrier frequency, twice the
deviation, and slightly more preemphasis, - all to achieve a 10 MHz baseband video recording bandwidth
capability. Four such component analog recording channels were utilized in parallel to achieve a total
recording capability of 40 MHz - made up of 20 MHz for the green video signal (or Luminance Y) and 10
MHz each for the red and blue signals (or R-Y and B-Y components in the case of Y, R-Y, B-Y
recording). Almost 150 of these machines supported the early pioneering years of HDTV development -
worldwide - over the period 1984 to the late 1980's. The HDTV video signal format to which this VTR
was designed was based upon the preliminary 1 125/60/16:9/2: 1 system - having specified system
bandwiths of 20 MHz for Luminance Y, and 7.0MHz R-Y, and 5.5 MHz B-Y.
The HDV-1000 proved to be a remarkably robust, reliable HD VTR workhorse and it early and
firmly established the viability of reliable RD real-time image capture. Nevertheless, it's technical
shortcomings were soon exposed by a creative and demanding international program production
community. The limitations of two channels of analog audio recording, and about four generations of liD
video recording in post-production were inconsistent with the needs of high-end program production.
The 45 db signal to noise limitation also imposed a boundary to the quality of the HDTV tape to 35 mm
film transfers being made by both Electron Beam and Laser Recording techniques. The HDV-1000 had,
however, pushed the state of the art in analog FM recording to the boundary. Head and tape technologies
were not expected to advance sufficiently to warrant a new generation in analog recording design.
Attention thus turned to digital recording techniques.