Right, but the question is - do you see actual images with this "mind's eye", or is it more of a sensation, a logical understanding of what you're imagining but with no real imagery?

Oh proper images. And if I focus I can increase resolution. I can get to where it’s as good as real life, for most things. But if it’s a book character I’ve never seen, the details are more oddly distributed and not stable over time, except when the author does a really good job with descriptions.

Seeing mental images that are as good as a well done animation, on the other hand, is a lot easier and less draining to hold.

I see actual images, but at least for me its not anywhere near the same as actually looking at something. Its sort of like watching a low fidelity movie for me and I can't really "focus" in on specific details of what I'm visualizing. I think there is definitely a spectrum.