What are zoom binoculars and are they any good?
Zoom binoculars are optics with variable magnification. They can be used at a low power to find an object of interest and then be “zoomed” in on that object to see more detail. They work by changing the distance between the lenses. Zooms may not be right for all situations since images can become darker and blurry when set to a high magnification and the FOV is generally smaller than standard binoculars.