When a camera zooms in it focuses on something more closely and shows it in more detail.
Example of use:
The photographer at my sister’s wedding used a telephoto lense to zoom in on her beautiful bouquet of flowers.
infinitive – zoom in
present simple – zoom in and zooms in
-ing form – zooming in
past simple – zoomed in
past participle – zoomed in
See also, zoom out
Image by Thomas Shahan