1970: John NOAKES and the Magic of BLUE SCREEN | Blue Peter | Retro Tech | BBC Archive 

Not quite true

Was that the one with Jon Pertwee

@@recall2880 Yep, it was Pertwee's second time tackling the Autons!

@@eloqi I loved Jon Pertwee. Apparently he was an all round smashing bloke!

He was on BBC programmes in the 1990s, 2000s, and 2010s, so they can't have neglected him that much. He just hated Biddy Baxter and there's not much they could do about that.

Not sure how they neglected him, they gave him his own show Go With Noakes. I can only think of one other BP presenter who was given his own show to front and that was the other daredevil "I'm up for anything" presenter, Peter Duncan.

Tiswas or multi coloured swap shop

" I was more of a Magpie girl " *Fascist!*

@hilaryepstein6013 :- One for Sorrow, Two for Joy, Three for a Girl and Four for a Boy. Five for Silver, Six for Gold, Seven for a Secret never to be told, Eight's a Wish and Nine's a Kiss. Ten is a Bird you must not miss. M A G P I E !!!!!!!! (and I didn't need to Google that!) 📺

Yes, I'd love to see it too.I remember watching the programme and thinking he was very brave. Looking at other comments, it shows how beloved he was.

That's not true. A lot of people watch terrifyer 2

@@maxmaxy7542 what? your reply makes no sense

Didn't he wear his wife's underwear because it was softer on the skin 🤔

@@kevinnorfolk1710 I don't know if he did but it usually is........

I was - 4. Whats the idea?

@@andydixon2980 ha ha ha! I can’t for the life of me remember. 😆 oh no!

Oh yes.. I remember. My other half refuses to appear in my vlogs - but this gave me an idea to dress him in green against a green screen with only his violin visible. I know. Random!!

After a bit of digging: The only time 1st October was on a Thursday (mentioned by Valerie near the end) was 1970. Valerie Singleton presented until 1972, so this aligns with the Valerie Singleton, Peter Purves and John Noakes lineup. Seems early to me, but there you go. Especially when Blue Peter started transmitting in colour in September 1970.

Could always try reading the title? Just an idea 🤷

@@stepheng8779 Ha ha! There's always that, yes. It's also mentioned in the description (which I don't think it was when I watched, but it is a Monday.

@@stepheng8779 doh! So that answers it, it wasn't ILM.... Typical Americans next they will try to say their telephones and lightbulbs where first

The history of Bluescreen dates back to the days of Technicolor when film was recorded on 3 strips of film (1 for red, 1 for green, and 1 for blue) and then combined by a process called colour dye matrix transfer to create the Technicolor print that was projected in cinemas. It was noticed that the blue record produced near silhouettes of skin tone (due to the relative absence of that colour) and could be used to print high contrast Black and White "mattes" (french for "mask") which could then be used to separate images of people (or anything that isn't primarily blue in colour) from a saturated blue background. One of the first films to use the technique was 'The Theif of Baghdad' where you may notice the blue fringing around elements in shots that use the process (due to the high contrast matte over-covering the subject and leaving some of the blue background showing around the edges). The technique was refined in the '60s by Petro Vlahos and called the colour difference process involving making Black and White colour separation prints which were then rephotographed through colour filters in an optical printer to create higher quality Bluescreen mattes, which is the technique that 'Star Wars' used. The television version demonstrated here is also commonly known as Chromakey and involves the blue channel of the video signal being clipped (the highest chromatic value being electronically gated) and the resulting signal being used as a "key" (like a "matte", it is used as a signal switch between the two images being combined) to mask out the saturated blue areas of the video signal and overlay it over another video signal. The same effect can also be achieved with green (and even red, although this is rarely used because skin tone has a high red component in it so faces would become transparent) and modern single CCD colour cameras use a mosaic of red, green, and blue sensors to capture colour information in which the green component has a higher spatial resolution than red or blue (due to their relative perceptual "brightness") so green is now more commonly used (whereas, on film, modern integral tripack colour film - which combines the three colour sensitive layers onto one strip of film - the blue sensitive layer is the highest resolution due to the relative photosensitvity of filmstock to blue light). A better version of Chromakey (or colour separation overlay) was developed by Petro Vlahos, again, called Ultimatte which used a more sophisticated system of vision mixing and signal mathematics to produce cleaner mattes with semi-transparancy for things like shadows on the blue blacking and smoke etc. An example of Ultimatte was the '70s TV show 'The Invisible Man' starring David McCullum.

​@@JohnSmith-it6hj Most were terrified of being identified as gay because doing "what they liked to do" was illegal even in the privacy of their own home right up until 1967.

I appreciate your comments; but John Noakes was never staid or anything but a brilliant presenter, with real warmth and humour.

@@traceya9615 I never said John was staid. I felt the format of the show back then was staid.

Who cares if they are gay or straight? What are you missing the mannerisms and speech patterns of a gay presenter? Why should bedroom practices make any difference to a kids program??

I didn't realise Adam was gay. Also hasn't Stuart denied being gay? He does a transvestite comedy act, but I'm sure he said he wasn't actually gay. As far as I know the only Blue Presenter who has ever publically confirmed they are gay is Mark Curry, although his immediate predecessor, Michael Sundin, was said to have been gay according to the papers at the time.