Please read the White
Paper Copyright Notice
Download
 WHP034
-
Addendum 5a 158 Kb
WHP034 main listing |
BBC
R&D White Paper WHP034
Colorimetric
and Resolution requirements of cameras
Addendum
5a: Menu
settings for BTS/Thomson Multi-media LDK6000
version 3.2 (1080p25 - capable camera, and MCP
series 9000)
Measurements
and data for this appendix supplied by Richard
Salmon
Alan
Roberts
|
Abstract
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.
|
Keywords
camera,
colorimetry, gamma, knee, aperture correction, detail enhancement,
film look, shuttering
|
