Found this in another post a week or two ago I don\'t know if it works but might not hurt to try
1. Remove lend
2. Install camera body cap and power up
3. Make sure battery is fully charged
4. Place the camera in manual sensor clean mode for 5 minutes. Make sure the camera body cap remains in place for the full 5 minutes
5. Turn camera power off
6. Reinstall lens and test at high ISO
7. Problem solves
Jul 17, 2009 at 07:36 PM
Previous versions of tanglefoot47's message #7315608 « Used 50D has stuck pixel »
