[Tig] theatre screen luminance standard

kitaro kitaro at icebergdesign.com
Wed Nov 1 10:31:43 GMT 2006


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----- Original Message ----- 
From: "Hakan Toptas" <htoptas at sinemaj.com>
To: "Jim Houston" <jim at power.net>; "Rob Lingelbach" <rob at colorist.org>; 
"Telecine Internet Group" <tig at tig.colorist.org>
Sent: Wednesday, November 01, 2006 6:10 PM
Subject: Re: [Tig] theatre screen luminance standard


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>
>
> Is there a calculation formula or a chart between kelvin and x,y values.
> x=.314, y= .351 means 6300K.
> What should be the x,y values for 5400, 5600 or 5800K.
>
> Thanks and regards,
> Hakan Toptas
> Sinemaj, Istanbul
>
>
>
> ----- Original Message ----- 
> From: "Jim Houston" <jim at power.net>
> To: "Rob Lingelbach" <rob at colorist.org>; "Telecine Internet Group"
> <tig at tig.colorist.org>
> Sent: Tuesday, October 31, 2006 5:19 PM
> Subject: Re: [Tig] theatre screen luminance standard
>
>
>> TIG is supported by subscribers.
>> see http://tig.colorist.org for
>> donation button interface.  The Wiki is
>> down temporarily
>> --
>>
>>
>>
>> For film projection,  16fL open gate at 5400K (more or less- it has a
>> wide tolerance, typical is 5600-5800)
>>
>> For digital projection,  14fL(48 nits)  at  DCI P3 (x=.314, y= .351)
>> approx 6300K CCT.
>>
>> All of these are measured off the screen.
>>
>>
>> On Oct 31, 2006, at 5:44 AM, Rob Lingelbach wrote:
>>
>> > TIG is supported by subscribers.
>> > see http://tig.colorist.org for donation button interface.  The
>> > Wiki isdown temporarily
>> > --
>> >
>> > I'm sure this has been covered before but (tail between legs) I
>> > don't have a search facility
>> > working right now for the archives.   Can someone tell me (and
>> > another couple of colorists
>> > who are interested) the standard, SMPTE or other, for screen
>> > luminance in projection theatres?
>> >
>> > there could be some caveats in this kind of general question with
>> > which I'm somewhat aware,
>> > but if a standard exists, please let me know, thanks in advance.
>> >
>> > Rob Lingelbach
>> > Colorist
>> > Pixion, Mumbai, India     http://www.colorist.org/robhome.html
>> >
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