Light radiographic film is due to:

LIGHT RADIOGRAPHS  Processing Errors  Underdevelopment (temperature too low; time too short; thermometer inaccurate) Depleted developer solution  Diluted or contaminated developer  Excessive fixation  Underexposure  Insufficient mA  Insufficient kVp  Insufficient time  Film-source distance too great  Film packet reversed in mouth  DARK RADIOGRAPHS Processing Errors  Overdevelopment (temperature too high; time too long)  Developer concentration too high  Inadequate time in fixer Accidental exposure to light  Improper safelighting  Storage of films without shielding, at too high a temperature, or past expiration date Reference: White and Pharoah's Oral Radiology Principles and Interpretation 7th edition page no 80