Found this at the BBC web pages, may be usefull explaining the CCD's in [broadcast] camers and how theyre ready for HDTV at the BBC - no more grudging the TV Lisence!!! http://www.bbc.co.uk/rd/pubs/whp/whp034-add5a.html """"This camera is not a camcorder, but of the conventional studio type, triax connected to a conventional ccu. It has many interesting and useful features. The camera closely resembles other, small studio cameras. It has the usual shoulder pad that makes it operable hand-held, and is no bigger than a conventional camera. The camera is designed to operate on the 1080-line standards, but is intended to operate also on the 720-line progressive standards, and eventually on a 1080-line progressive standard. The ccds are 1920 pixels by 4320 rows, each with a 4:1 aspect ratio. To operate at 1080 lines pro-scan, rows are added together in groups of 4. For 1080 line interlace, the grouping is in sets of 8, phase shifted by 4 on alternate fields. Grouping in sets of 6 gives 720 pro-scan and so on. Derivatives of this camera may well be manufactured under different type numbers (maybe LDK7000, and certainly Viper Filmstream). In the form tested, it produced simultaneously HDTV and SDTV outputs. It can use either HDTV or conventional SDTV viewfinders and monitoring. It can operate in a mixed environment, simultaneously feeding HDTV and SDTV programme switchers but under single control. Control of the camera is by conventional OCP and MCP (Operational and Main Control Panels), and is little different from any conventional SDTV studio camera. One useful feature is that the aperture correction can be set separately for HD and SD outputs, the HD settings apply equally to the HD and SD output, but a separate AK is used for the SD output. Thus the camera can be optimised for HD images, but the SD feed can be optimised independently. Transfer characteristic (gamma, black stretch and knee) can be set conventionally, and a good "film-look" can be obtained for post-processed production. There is a "Black Press" option which can produce a "film-look" directly from the camera.""""" Moderators: Hope this posting doesent infringe BBC copyright - if so feel free to remove it Stuart.