Urgent! ! ! Who knows about Nikon cameras? What if the photos I take are always white?

1, you are overexposed. Is the photographic lamp a flash? That is to set the shutter, aperture and sensitivity with M gear. See if you want to set the background blur sensitivity to 100 (don't move), then set a large aperture (the smaller the value, the larger the aperture), and then control the shutter.

If the photo is dark, slow down the shutter. If it is too white, the shutter will be faster. If it's really a flash, it's best not to exceed1/250 s. It doesn't matter if the light is on all the time.

2. If the light is always on, you can set the A gear, give priority to the aperture and set the sensitivity, and the camera will automatically weigh the aperture and shutter speed.