Digital zoom
Electronic enlarging of the picture. It makes the animal look bigger but adds no detail; past about 2× to 4× the image gets blocky.
What it means
Digital zoom crops the center of the sensor image and stretches it to fill the screen. Spec sheets often list it as a maximum, such as 8×, 16× or 32×, or as a range from base magnification upward. No new information comes in: the same sensor pixels are just drawn larger.
What it changes in the field
A common illustration with a 640-wide sensor: at 1× the screen shows 640 sensor pixels across; at 2×, 320; at 4×, 160; at 8×, 80. Each step halves the real detail across the screen. The coyote looks bigger, but it is made of the same few pixels, now blocky.
Many hunters identify an animal at base magnification and zoom only to place the crosshair more precisely. Zoom also narrows the view, which makes it harder to follow a coyote that moves.
There is one case where some zoom does help. If the screen has fewer pixels than the sensor, the screen is the limit at base magnification, and zooming until one sensor pixel fills one screen pixel reveals detail you could not see before. This matters most on digital night vision, where a 4K sensor may feed a much smaller screen.
What to look for
- A big maximum zoom number is a marketing line, not a sign of reach.
- Compare sensor resolution and focal length for real detail.
- Check whether zoom steps are smooth or fixed, and whether the unit has a picture-in-picture window that shows a zoomed view beside the full one.
How we use it on this site
Our identification distance is calculated at base magnification. Digital zoom does not change it. We list the maker’s maximum but do not score it.