This morning I was jogging when the sun came rose. I was in the middle of wheat-fields and noticed that there was a glow around the upper part of body's shadow on the fields. At first I thought that the thing only happened in my eyes as a kind of saturation, but then I could photograph it.
Due to the low height of the sun at this time of the day my shadow was quite long. The following pictures are taken within 5 minutes of time differences. About 45 minutes later the glow had disappeared around my shadow but it had become shorter as the sun rose.
What has happened? Is it related to diffraction or bending? Does humidity play a role (temperature was around 7 °C)?
One week later, same time, same weather, same place. I tried to "confirm" the things answered below. Yes, that glow is only observed by the sensor. I kept my camera away from my body and took a picture. The glow is around the arm's/camera's shadow. I, at the same time, saw the glow around my head.