Why does Nikon SLR camera turn on the flash when taking pictures with strong light? I just bought a Nikon D7 camera, and I took pictures outside on the balcony, at noon.

This is because although the light outside is very strong in general, the part you focus on when shooting is in the shadow, and the light is not necessarily strong. And you use automatic mode, once the light is insufficient, it will flash to make up for it.

I suggest you give up the automatic file as soon as possible, skip the P file, and shoot with aperture priority A and shutter priority S file. The technology will improve quickly. In the end, I achieved full manual operation in M file and became a master photographer.