[Tig] Wizard of Oz looked like video... Technicolor Gamut

Ed Reitan ereitan at novia.net
Thu Jan 6 16:02:12 GMT 2011

Richard Kirk, in his message below, said "tried to get as close to the
 gamut as current print stocks allow".

I personally was disappointed in the color of the recent "Wizard" on
Blu-ray.  I did not see the beautiful flesh tones and more deep reds of even
the much earlier NTSC Laserdisc "Wizard" release.

And certainly I did not see the very deep and rich reds and greens of a
Technicolor Imbibition "Wizard" print seen at the Los Angeles Vagabond in
the 1970's.

Just what is the gamut of the Blu-ray format - what color primaries does it
use, or is that left up to the producer of the disc?  The distribution of
the specification for the Blu-ray format is limited to members, so I have
not found information of the format's gamut capability - or is it just a
pass-through from whatever film scanner is used?

It would also be interesting to find any documentation or measurement of the
gamut of original Technicolor prints.

A comparison of this with present Blu-ray format practice would be

Of course, I am in favor of maintaining the widest gamut possible through
the entire scanning-mastering-playback-display thread.

Ed Reitan

----- Original Message ----- 
From: "Richard Kirk" <richard at filmlight.ltd.uk>
To: <tig at colorist.org>
Sent: Wednesday, January 05, 2011 4:17 PM
Subject: Re: [Tig] Wizard of Oz looked like video...

> > From: Alex Pimentel <alex at casablancaonline.com.br>
> >
> > I saw a digital projection at IBC main theater a couple of years ago
> > (maybe 3).
> > It was impressive for a movie with that age.
> I saw that too. I thought it was film, though there was to be a
> digital release too. As far as I can remember, they scanned the
> original three separation matrix, aligned the elements, and then
> printed the image onto conventional internegative stock. The
> Technicolor process always had trouble aligning the separations, and
> this printed them in perfect register. Unfortunately, this meant that
> you could see the seams in the Munchkin village set, and the Emerald
> City in the distance looked like a backdrop. Parts of it looked more
> like 'The Banana Splits'. Be careful what you wish for...
> They made a choice to do as little as possible to the image. They did
> a presentation on how the film was recreated; they said they corrected
> the registration errors, and tried to get as close to the Technicolor
> gamut as current print stocks allow, but they tried not to touch the
> images themselves other than to correct obvious faults. There was lots
> of heart-searching as to whether it was 'right' to edit out the flying
> monkey strings, and other faults that came into focus when the
> separations were aligned. It would be interesting to go to the other
> extreme and make a high-gamut 4k digital version using all the modern
> touch-up techniques to get the film as we might imagine the original
> artists would have wanted.
> Cheers.
> Richard Kirk

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