This comment is very interesting to me, thank you for sharing. I can relate to a lot of what you said, and I feel the phrasing "normal imagination lacking detail" is perfect. And, (why I decided to respond ->)

> For me the ball is smooth an white. The table is something akin to stainless steel.

my scene was similar but opposite: Steel/metallic ball on smooth white table, ball falls into a colorless void. The table doesn't even have dimensions really, just has an edge the ball can fall off.

I must read more on aphantasia. If you don't mind me asking: did you decide that this is your condition through learning about it, or were you "diagnosed" somehow?