BobH wrote:I have to say I see this same technique in Saxby's Second Edition on page 127, under "Reflection Master Holograms", and he references Hans Bjelkhagen from 1977 and Nils Abramson.
danny's method is totally different than the saxby book. This method has not been recorded in any book and this method was not really available (for hobbiest),to be done in the earlier days of holography, as long coherents is needed to do a deep image,and the polarising films are much better now (lower attenuation)....
a paper on this will be a good thing and holographers world wide will be saying "WHY didin't i think of that!" :doh: