Re: Using IR Flashbulbs

[Clive Warren <Clive.Warren@xxxxxxxxxxxxx>]

At 9:23 am -0600 12/8/99, pete wrote:

>Clive wrote,
>>
>>Thanks WIllem-Jan, had forgotten about the Cress flash bulb site.  His
>>prices are reassuringly expensive.  Suppose it may worth investing in one
>>or two bulbs - unless you know a source of infrared paint :-)
>
>Quite a while back I posted a formula for coating flashbulbs for IR
>photography. I found it in an early 70s vintage Photographers Formulary. It
>had a lot of ingredients, almost all of which were available from a
>chemical supply house. Unfortunately, it would cost a lot not only because
>of the number of ingredients, but because you have to buy larger volumes to
>get a decent price.
>
>I had hoped that with all the technical people on the list that there might
>be a chemist or someone knowledgable enough to look at the list and pare it
>down and/or suggest substitutes.
>
>I couldn't find my original post, but did find some correspondence with
>Bill Cress about it. He was considering trying it, maybe he could give you
>some info. A better alternative might be using unexposed, processed E-6
>film and using it in a flash cover.
>
>pete


Pete,

Thank you for the information.  Will ask Bill if he still has your original
post as the information could be useful if as you say a chemist could come
up with a suitable formula based on the original.

The problem with covering any flash bulb in the appropriate holder is the
replacement of the bulb after firing and easily ensuring a light tight seal
around the bulb.  Guess that will be a problem to consider during the
Winter around a log fire whilst sipping on a hot toddy......




All the best,

             Clive   http://www.cocam.co.uk
                     Photographic Services, Filters and Equipment
                            http://clive.bel-epa.com
                            Adventures in Cyberspace - Digital Art and Photos


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