Re: [photo-3d] Halogen viewer bulbs

[Steve Berezin <sbere@xxxxxxxxxxxxx>]

"Dr. George A. Themelis" wrote:

> John Goodman writes:>So what's the story? Wouldn't the bulb with the
> manufacturer's
> >lower voltage rating provide a higher color temperature
> >illumination and a shorter lifetime at the voltage delivered by
> >two (alkaline) batteries? Is the difference really negligible?
>
> It is quite possible that the bulbs have nearly identical curves, with
> 2.5V/0.83A
> and 2.8V/0.85A being two points of this curve.

After so many questions about the perceived differences of the two bulb types
we decided to offer both versions.  From all the literature and personal
experience that I have found the 2.8V bulb may have a  longer lifetime than
the other bulb.  This may be due to other factors as the bulbs appear quite
different. The 2.5V bulb may be a bit brighter but I could not detect it.

See:
http://www.berezin.com/3d/vieweracces.htm#Bulbs

--
http://www.berezin.com/3d  Ph 949 215 1554
Steve Berezin- Berezin Stereo Photography Products



 

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