Castner Range Under a Partly Cloudy SkyLong exposure photo of Castner Range in Northeast El Paso. This week's photo shows Castner Range in northeast El Paso under a partly cloudy sky. To add an extra bit of drama to this photo I used a 10-stop neutral density filter that allowed me to extend the exposure time to over 3 minutes. This caused the camera to capture the movement of the clouds and resulted in the effect seen above.