kecked
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Thank you for your comments and images. They were very educational and enjoyable. I’ve never tried holography but have always enjoyed watching the process.
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Interesting thanks for the info. I wasnt aware you could make them out of photos.All holograms record information down to microscopic resolution. It's the replay light that determines the resolution of the images replayed. I'm using an obsolete Ikea Jansjo LED clamp-based lamp to replay the holograms above. It's still available on Ebay, and is the absolute best light ever for lighting holograms (other than laser). The currently available Jansjo is USB-powered and way too dim.
The cannabis hologram "master" was made with a pulsed frequency-doubled Nd:YLF laser giving green light in a 30ns pulse of about 700mJ. What's seen above is a hologram of that master hologram, shot with a 35mW red He-Ne laser and processed to replay in green.
Hologram and scene size is generally determined by the size of the optical table used to make the hologram. Some images are originally captured with conventional photography and made into a "master" hologram with a process camera built on a large optical table. Similar to a lenticular 3D photograph, but without the need for a plastic lenticular lens in front like on those old postcards.