Watch For Strong Backlit Shots

Imagine you are on the beach. You and a friend are having a great time, so much so that you want to take a photo to capture the moment.

You get your friend to stand by the water. You vary carefully stand your friend with his back to the sun as you correctly have judged that having the sun behind YOU will cause your friend to squint because HE will be looking into it.

Posed and ready, you take the photo. Luckily, your friend does the same for you (it just goes to show what a great time you are having).

You look at the resulting images. They are poor.

Neither of you are squinting, or at least, you don