There are many different types and styles of holograms -- each requiring it's own individual technique for production. Some holograms require a laser to view them, others rely only on regular light. There are holograms that show motion, and also holograms that change images as you move by them. Holograms can be in full-color, change color and even project their image out in space toward you when you view them.

As stated above, each hologram has it's own individual technique when made. Some holographers know all of the techniques, while others specialize in only one. The easiest hologram to make is the "single-beam" hologram. Many holograms that you see in stores and museums are "split-beam" holograms -- many of them copied from holographic masters.

There is a lot to learn and experience when it comes to holography. This is why it is so popular as a hobby for many people.