Cracks in photo

[arnold12]

Does anyone know what caused the cracks in the upper right part of this photo. The 2005 Digital Rebel camera hasn't been dropped or damaged. I haven't checked the sensor yet. The cracks are only visible at f stops above 8.

[arnold12]

I picked up the camera today, fungus free. No damage to the filters or sensor.

[Peter]

Don´t get it to your lenses. Always store your camera equipment dry.