Digital BW, The Print

On Wednesday, November 5, 2003, at 11:29 PM, 
DigitalBlackandWhiteThePrint@yahoogroups.com wrote:

> Message: 21
>    Date: Thu, 06 Nov 2003 05:47:38 -0000
>    From: "David Wroblewski" <dawroblewski@...>
> Subject: Re: Color slides of Ultrachrome prints... magenta?
>
> One addendum to my previous message. I was just looking over the
> film specs for EKTACHROME 64T on the Kodak web site and noticed
> this statement:
>
> "For best color rendition, use tungsten photolamps (3200 K) at
> their rated voltage. If voltage varies significantly, the color
> of the lamp will change."
>
> I had my lights rigged up to cheap hardware store dimmer
> switches, set at about 1/2 brightness. Thinking I was clever.
> I wonder if that was all it took to turn the slides magenta.
>
> Again, all advice welcome.
>
> -david

using even a very good dimmer will make the color of the light much 
more amber colored. So, don't use a dimmer for the most accurate color.
And, as tungsten lamps age, the color temperature cools (more orange) 
as well.

unless you are using new halogen lamps designed for photography and 
rated at 3200k, you might want to use a color temperature meter to test 
the color of the lamps and add color correction gels til they hit close 
to 3200k.

It might be easier to shoot daylight film with a daylight electronic 
flash for accurate color.

-bruce