Robert,
You know,I think that may be changing. These bulbs seem very white.
Much whiter than other flourescents I've seen in the past. I'm seeing
other flourescents like this now too. I'm wondering if there has been
some improvement in the technology. Kind of hard to tell with the eye,
but I think some of them even mention "full spectrum" or something
similar on the packaging.
Gene
Robert Stoddard wrote:
>
> Hi Matt,
> The problem is that fluorescent lamps don't have a continuous spectrum of
> colors of light as a hot filament lamp does. This probably would not be a
> problem if you are using single contrast-grade B&W enlarging paper, since it
> would only affect the time required to print. If using multi-contrast
> paper, it might cause some trouble because of the fact that the color of the
> light must be changed to get the different contrasts.
> RkS
>
> >From: Matt Mengel <[EMAIL PROTECTED]>
> >Reply-To: [EMAIL PROTECTED]
> >To: Cameramakers <[EMAIL PROTECTED]>
> >Subject: [Cameramakers] Speed Graphic Enlarger/spectral trouble
> >Date: Mon, 18 Jun 2001 07:18:41 -0700 (PDT)
> >
> >Thanks to everyone on the speed graphic light head
> >stuff. I think I have enough info to get started BUT,
> >there have been some concerns here as to spectral
> >problems with different light sources. Can anyone shed
> >some light (sorry) on what the problem(s) would be. I
> >am not at all familiar with this. If I used a source
> >with the wrong color temp. what would happen? I'm
> >speaking in the B&W sense of course.
> > Also, I mentioned earlier the Ansel Adams book, "The
> >Negative". After I actually READ the book instead of
> >just reading captions, I got a little more insight on
> >the type of enlager he was describing. If anyone is
> >interested just about any library has this series.
> > Thanks
> > Matt
> >
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