
Originally Posted by
MartinP
In place of photoflood bulbs you could try the high light-quality CFL bulbs (5000 - 5500K) used in continuous light-sources. The smaller ones, as might be used in a copy-stand, often have an ES thread the same as photoflood bulbs. It may be that you were previously using hotlights which weren't photoflood, in which case some new lamp-holders would be needed. That would at least make the copy stand a cooler environment, and reduce the amount of filtration needed.
Alternatively, consider the purpose for which the transparencies are required. It may well be, unfortunately, that film is no longer the top choice for commercial reproduction work compared with a quarter of a century ago. The film would need further handling/scanning/filtering for reproduction so perhaps a negative film would do the job, when you have a colour-chart in shot for balancing the scan. In that case, look at Ektar.
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