How to Zoom in to Check Focus on the Nikon D7500
Here’s a cool feature available only during Live View shooting on your Nikon D7500 camera You can magnify the display so that you can get a better view of whether your subject is in focus. This tool is available both during autofocusing and manual focusing.
To zoom the display, press the Zoom In button. Each press gives you a closer look at the subject. A thumbnail appears in the lower-right corner of the screen, as shown here, with the yellow highlight box indicating the area that’s being magnified. Press the Multi Selector to scroll the display if needed.
To reduce the magnification level, press the Zoom Out button. If you’re not using Subject-tracking mode, you also can press OK to return to normal magnification.