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Printing lights


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#1 Pax Martins

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Posted 05 September 2007 - 02:34 PM

HI Guys,

can anyone please tell me what 'printing lights' means and how it is done?

Many thanks
Pax
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#2 Charles MacDonald

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Posted 05 September 2007 - 08:47 PM

can anyone please tell me what 'printing lights' means and how it is done?

Short form, it is a way to express the exposure that the lab whould use to print your negative on a B&H Printer. Selecting the right "lights" is called "Timing" The lights are expressed as a whole number for each of the three printing colours. like 25 25 25.
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#3 Brian Pritchard

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Posted 06 September 2007 - 08:38 AM

Short form, it is a way to express the exposure that the lab would use to print your negative on a B&H Printer. Selecting the right "lights" is called "Timing" The lights are expressed as a whole number for each of the three printing colours. like 25 25 25.

The numbers are obtained from a VCA, Video colour Analyser, and the numbers are fed to the printing machine by a punch tape, floppy disc or by a direct computer link. The three numbers send signals to the light valves in the lamp house telling them how much to open. You will find details of punch tapes and B&H lamp house on my website. http://www.brianprit...com/Model C.htm and http://www.brianprit.../Punch Tape.htm
I did post one of these links a week or so ago and apologise for doing it again.

A well exposed negative should print at around 25 - 25 -25 although many labs have a setup that is slightly different from this.

Brian
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#4 Marc Roessler

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Posted 06 September 2007 - 05:21 PM

Very interesting Page you got there, Brian! (and..: The standard kodak datecodes float all around the internet copy after copy, but your page really has some unique ones...)
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#5 Pedro Millan

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Posted 07 September 2007 - 12:22 PM

Congratulations!!! that web site looks very nice.....
i just had a look on it and seems very interesting, i will have some questions for you...
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#6 Brian Pritchard

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Posted 07 September 2007 - 01:56 PM

Congratulations!!! that web site looks very nice.....
i just had a look on it and seems very interesting, i will have some questions for you...

Thanks for the kind compliments. I am always happy to help, I have been in the motion picture business for 45 years so if I don't know the answer I can usually find someone who does.

Brian
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