KT-116M Colour Television Camera
The KT-116M studio camera has four pick-up tubes of
the Plumbicon type
30mm. in diameter, with a "Raduga" 10-to-l zoom lens.
The signal-to-noise ratio of the camera at 6 MHz, is at least 41 dB,
with a scene illuminance of 1,200 lux, a light source colour temperature
of 3,200 °K, an f-setting of 1.4, and a modulation depth of 90%
of the nominal value for 4 MHz, without aperture correction. An
aperture corrector ensures 100% modulation at 5 MHz. The minimum
illuminance at which the picture retains a satisfactory quality is 200
lux. Extract from "International Exhibition SVJAZ-75 Soviet
Section" Leaflet
These pictures were kindly sent to me by Zdenek Houška as part of the Russian service handbook dated 1972.