Support and Contact Center

TOPIC: Photographs have bright dots (aka

Question:
TOPIC: Photographs have bright dots (aka

Answer:
The white spots (usually a pixel in dimension) that appear in your photographs are hot pixels. Hot pixels are individual sensors on the CCD with higher than normal rates of charge leakage. They can appear as small pixel sized bright points of light on longer exposures. Every pixel on the CCD has some charge leakage, and if you expose long enough, any pixel would light up. On a long exposure, you will see pixels ranging from just barely visible to possibly bright hot starlike points. There might be a few bright hot pixels, more intermediate one, and lots of very faint ones, an entire spectrum of brightness. At the low end, the faint hot pixels contribute to the noise in a picture. All cameras on the market today have "hot pixels". Because the rate of charge leakage is the same for a given pixel over time, the longer the exposure, the brighter it becomes. High sensitivity and long exposures are the main factors contributing to the visibility of hot pixels. Hot pixels are normal do not indicate a fault with your camera.