"my camera scanning the sun" What does "scan" mean here?

Patient as I was, after about 15 minutes, my camera scanning the sun and reviewing the shot I would eventually take, I grew frustrated. Was it too much to ask her to move so I could take just one picture of the landscape? Sure, I could have asked her, but something prevented me from doing so. She seemed so content in her observation. I didn’t want to mess with that.

Question

"my camera scanning the sun" What does "scan" mean here?

Patient as I was, after about 15 minutes, my camera scanning the sun and reviewing the shot I would eventually take, I grew frustrated. Was it too much to ask her to move so I could take just one picture of the landscape? Sure, I could have asked her, but something prevented me from doing so. She seemed so content in her observation. I didn’t want to mess with that.

Answer

I think it just means the person is looking at the sun through their camera to work out a good photo. I suppose it is either sunrise or sunset because the sun would be too bright otherwise.