October 21, 2014
By Michele Yamazaki, Toolfarm
Dead pixels, stuck pixels, bad pixel, burnt pixels, hot pixels… there are lots of types of damaged pixels and they’re annoying. Here are several ways you can repair them.
Introduction: What is a Damaged Pixel?
First, lets get semantics out of the way. The term damaged pixel refers to several types of damage that can be recorded on a camera. The damaged pixels I’m referring to in this article are often caused by damage to a camera with CCDs or CMOS sensors. The damaged pixels can be white, black or sometimes even colored, but they are caused by different problems. I’ll try to explain this as simply as possible.
Dead pixels or burnt pixels happen when all three sub pixels (red, green and blue) are permanently turned off in the camera. They show up as black in the footage.
A hot pixel is when all three sub pixels are turned on, showing up as a white pixel in footage.
A stuck pixel is when one of the three sub pixels are turned on, so it can show up as red, green or blue.
You can also experience what could look like damaged pixels if the sensor is dusty or dirty. In that case, get your camera cleaned professionally. You can risk serious damage to the camera if you’re swabbing the sensor when shutter’s curtain or mirror closes. If you’re seeing out of focus areas, this may be caused by a dirty lens.
Here’s an eHow video on dead pixels.
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