Are your eyes open when operating the camera to take pictures?

If you look at the first two paragraphs with an eyepiece, sometimes you have to close your left eye to see them clearly. If you look at the display, you don't have to turn it off. Sometimes even if you look through the eyepiece, don't close your left eye. You can see clearly as long as you adapt. Whether it's off or not, it's up to you. The key is to shoot as soon as you can. There is no hard and fast rule.