At 0.5x zoom, the field of view is 13.8°w × 10.3°h.
If your target is in the center of the screen at 100 yards, you’ll be able to see about 36ft (12yds) on each side of your target, and 27ft (9yds) above and below. (72ft total for horizontal view, 54ft total vertical view) ….
This is not meant for searching or scanning the countryside but I would say it still gives a decent “view” for anything inside of 125-ish yards when you’ve acquired your target.