RCA, CBS, Lynn discussed on TechStuff
They don't go well together typically so in order to avoid overheating RCA chose to make the TK forty cameras silver, though, it reflects some of that light away from the camera. This is after some enterprising camera crews had done a DIY approach and taken silver paint and coded earlier. Prototype cameras in silver paint to deflect some of that light to to make sure that didn't get too hot. And RCA took a note and decide to make that an official design point these cameras also had what are called Lynn's turrets. If you take a look at old school television cameras, you'll see that they appear to have four lenses poking out of the front of them. That's actually a lens turret it's kind of a disk that has different lenses mounted on it. And then you can turn the disk. So that a different lens is actually active. So the whole purpose of this is to create different focal lengths of of lenses rather than having to physically remove them. And swap them out. They were all mounted on the camera. You could just change whichever one was active at a given time. So the common setup on one of these lens tarts was to have one eight and a half inch lens one one thirty five millimeter lens one ninety millimeter lens of one fifty millimeter lens, and I gave the camera operator and director, some odd. Options to choose the focal point for specific cameras in whether it was going to be a close up or a wide shot. They could choose whichever lens. They wanted to us. Now, it was possible to change lenses during a live show typically you would do so by switching to a different camera. And then changing the lens on camera one while camera to his active, but this was pretty uncommon usually they would just set the lenses for whatever shot they wanted. And that was what it was gonna stay as RCA had introduced lens turrets with the older black and white television cameras. This was kind of a holdover from those days now once light pass through the lens of one of these color cameras. It would hit a beam splitter. Then that would divide the light into three beams each of those beams of light within hit an individual orthodox con to non the previous episode when I was talking about black and white TV's talked about a special component called the economy scope, which was in charge of taking light having it hit a photo electric bass. Then using an electron beam to scan it and that would send out the signal the Ortho. Con was the successor to the scope it used a low velocity electron beam instead of a high velocity electron beam the economy scope used the high velocity ones, but the problem with that was that it would sometimes produce secondary electrons. So you would get quote unquote noise in the signal the Orthon used low-velocity electron beams which would not create these secondary electrons. And again, it would use it to scan a Photoelectric mosaic on a special plate inside the tubes. The lights hitting that plate the electron beam scanning the plate, and that's what's creating the signal. So in this case, the light comes into the camera it splits into three beams and each being goes into a separate Ortho. Con then you can guess each of those cons was dedicated for a specific representation of color, red green or blue and these cameras would then. Send that signal out to be a transit transmitted over to the color televisions? They were large cameras they are relatively primitive. They required lots of adjustments and tweaking to keep them tuned to the proper colors, but they worked and the most important aspect of this whole approach was one of practicality that was how RCA was really leaning into this technology. The CBS color television was incompatible with the older black and white sets as I mentioned. So the CBS approach meant that you were going to have to go out and buy a brand new very expensive television said if you wanted to watch this new programming, and you would have to have an older black and white set if you wanted to continue to watch all the programming that was made just for black and white televisions. So it was not a very attractive technology to consumers it you weren't able it wasn't backwards compatible as we would say in the in the video game console age..