Re: Contrast Range Control

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From: Dan Smith, Photographer (shooter@brigham.net)
Date: 06/30/00-09:44:01 PM Z

So if one frames their work behind high quality Denglas Waterwhite museum
glass, which keeps out most UV light, would there be any benefit to this
product?

dan smith

----- Original Message -----
From: "Jeffrey D. Mathias" <jeffrey.d.mathias@worldnet.att.net>
To: <alt-photo-process-l@skyway.usask.ca>
Sent: Thursday, June 29, 2000 10:16 PM
Subject: Re: Contrast Range Control

> Don Bryant wrote:
> > > Sprint Print Brightening Converter.
> > Can you elaborate some about this product?
>
> This has been done before. Check the list archives for "optical
> brightener" or my guide. What happens is that the brightening agent has
> the property that when subjected to UV light, it in turn reflects blue
> light. Even a tungsten bulb emits enough UV for the agent to function.
> This is a readily available commercial product.
>
> --
> Jeffrey D. Mathias
> http://home.att.net/~jeffrey.d.mathias/
>

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