http://www.audiogeek.net/images/hologra ... grams.html
They're all Denisyuks; the last two are made with 514nm argon light on VRP-M. The exposure on those was a bit low (8s) when it probably would have been better around 15-20s. (The argon is set to <5mW so that I don't have to wear safety glasses when working around the table)
Various holograms
Various holograms
It comes from the fact that the object (a swiss army knife) is reflective...