Re: Unusual 3d Concept/Light for Viewer

[P3D John Bercovitz <bercov@xxxxxxxxxx>]

John Vala writes about using fluorescent lamps.  
I'm concerned about two things.  The first is flickering which can 
be taken care of with high frequency electronic ballasts if they're 
available for the lamps in question.  Secondly I'm concerned about 
how the lamp's spectral output matches up to the film's spectral 
transmission.  Back when we had film at work (now it's all digital), 
the workers used light tables which were lit by 5000K fluorescent 
lamps but I think there's more to it than color temp because these 
had better rendition than others of the same temp.  Do you have more
details on fluorescent lamp performance?  I would like to light my
home-built 6x6 viewer.  I do have a fluorescent camping lamp but its 
color is ghastly, and that's being kind about it.  No doubt it's 
extremely efficent, though.
Thanks,
John B


------------------------------