For a long time, I've been sort of wondering how good my visual imagination is in comparison to other people. I don't know why, but I've always had the feeling my ability is below average. I can imagine things, but the image is never very clear or consistent, and I have even more trouble when picturing either a large environment or several objects, which I am under the impression some people can do rather well.

I can never really get to the point where I can actually "see" something clearly without it changing. For example, I have a lot of trouble picturing the face of anyone I don't know extremely well, so even acquaintances are difficult for me. My question is, how does your visualization compare to this? Am I expecting too much, or is this something I should work on? Also, do you think your visualization abilities relate to how vivid your dreams are, lucid or not?