[QuadList] MTV and first video music shows
Ted Langdell
ted at quadvideotapegroup.com
Mon Jun 27 20:40:36 CDT 2011
Cute picture, David...
Looks like a screen capture from tape.
Can you tell us the background?
Ted
On Jun 27, 2011, at 5:30 PM, David Crosthwait wrote:
> <TK42 MP.jpg>
> Chuck,
>
> I suppose your cameramen on those shows did not need a ladder?
>
>
>
> Best Regards,
>
> David Crosthwait
> DC Video
> Archived Media Transfer and Re-mastering Services
>
> Offices located at:
> 177 West Magnolia Blvd.
> Burbank, CA. 91502
> 818-563-1073
> 818-563-1177 (fax)
> 818-285-9942 (cell)
>
> DAVID at DCVIDEO.COM
> WWW.DCVIDEO.COM
>
>
>
>
> On Jun 16, 2011, at 5:25 PM, Chuck Reti wrote:
>
>> On Jun 16, 2011, at Jun 16 9:50 AM, David Crosthwait wrote:
>>
>>> I think many engineers were so fed up with the TK 42 that they
>>> personally guaranteed their destruction i.e. opened the dumpster
>>> for the deposit. The ones that Chuck were referring to had
>>> apparently been given special treatment (as was the case many
>>> times with educational TV stations). Meaning, many of those
>>> entities existed only on donated and discarded equipment. It was a
>>> personal goal for each and every member of the staff to make the
>>> equipment do what it wasn't supposed to do in terms of
>>> performance. Chuck said: "It was kind of an ad-hoc hobby gig, as
>>> we were working at "real" day jobs early in our TV careers. A
>>> great many of us are still doing this (since we have no other
>>> marketable or useful skills)." Even though the cameras that
>>> Chuck's associates used were at the end of their production life,
>>> the care and feeding of them produced really good clarity and
>>> color for what beasts they were for the most part. And that is a
>>> real trick when you consider that the light path was split up four
>>> different directions between and Image Orth. and three vidicons.
>>> So, the video engineers in who took an interest in those cameras
>>> deserve an award as far as I am concerned.
>>
>> In an exchange of emails with David regarding the look of these
>> particular TK-42s, I passed along comments by my old friend Michael
>> Hennessey, who was the person responsible for the set up and look
>> of these cameras. This station we shot at was a very small,
>> privately-owned UHF in suburban Detroit, quite literally operating
>> on a shoestring, not an educational outlet, though we had done some
>> earlier B&W shoots at university and educational TV studios. Mike's
>> comments on TK-42 setup as folllows:
>>
>> "...4.5 inch IO's had inherently good resolution and handled high
>> dynamic range lighting very gracefully: Remember how good the TK60
>> and Marconi (4.5 inch IO, BW) looked? One trick to achieving this
>> look was to use no video processor gamma correction for the
>> luminance channel. The camera was slightly underexposed on a log
>> chip chart and then target voltage was adjusted to just cause the
>> mid gray chip to "lift off". The exposure was then adjusted for a
>> clean looking "X" on the scope. The color channels were then set to
>> match luminance. Lastly, color channel pedestals were lowered to
>> clip the bottom chip - - - this is where most of the color noise
>> and lag were. I also cheated the IO's G4 and G5 adjustments (I
>> think that's right, it's been a while) for best corner resolution.
>> Basically, RCA's recommended setup was based on how the camera
>> should have worked, not on what made it look best..."
>>
>> Mike often had big differences of opinion on this issue with his
>> engineering supervisor at the TK-42-equipped station where his
>> "regular" job was.
>>
>> Chuck Reti
>> Detroit MI
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Ted Langdell
Secretary
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