How could humans (or some other animal species) evolve their eyes in that way, that they have the visual ability to "zoom"?
The conditions are Earth like, and we are talking about known species.
What would be the factors that would trigger that kind of evolution?
It was said in the comments that this was very unlikely to happen, but let's say it somehow did. A species just woke up one day to realize they have this ability.
How would that new ability affect the way of life of that certain species?