Tuesday Tip – How To Fix Dead Pixels

Despite what the name implies, hot pixels are anything but attractive. Sometimes dubbed as dead, stuck or stray pixels, these are often times detected when a dark image has been captured or while looking at a night sky time lapse. A hot pixel show up as red or white dots and are best seen against the contrast of a dark backdrop. They can ruin hard work and are most often remedied by sending the camera back in to the manufacturer for repair. Today we’re going to take a look at how you can fix this annoyance simply with the settings in your camera.

You want to be sure to cover your camera’s sensor with the body cap and take the extra step of then covering your body cap with a towel, jacket, whatever will help to ensure that ZERO light leakage makes it through to your camera’s sensor. In order for this trick to work, it must be pitch black. The mirror will flip up and the camera should expect to read all black. If there are any red or white pixels detected, the camera will remap them. Wait at least a minute, turn your camera off and then take a few shots of dark images to test out whether or not the dead or hot pixels are still there. Try this again if they are before resorting to sending the camera back in to get serviced.

Emm from cheesycam.com was helpful and proposed this as a Tuesday Tip. He wrote up a blog post on it, “09Apr Fixing Random Hot or Dead Pixels” A very big thank you to Emm for this one! If you guys have questions or suggestions, be like Emm and let them be heard!

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5 Comments

  • Sorry to be a bother, but doing the “Clean Manually” will automatically remap all of the pixels? Seems too simple, like there should be another step.

    Anyway- thanks!!!

    • Olivia says:

      @Alex Yes, the manually cleaning should remap and detect dead pixels. Check your camera’s user manual, it will detail this step as well.

      • Gert Arijs says:

        Hi Olivia,
        I believe that’s to “clean it manually”. So to use a sensor swab to swipe dust away. What you CAN do to avoid hot pixels is use “long exposure noise reduction” on auto.

  • Peter says:

    Maybe this isn’t a Tuesday Tip but I’d like to know the difference between f4 on a full frame and f2.8 on a crop sensor. I think a lot of people will start to upgrade to full frame because of the 6D and D600 and want to know what they’re buying into.

    • Olivia says:

      @Peter I’m not too sure what you mean. Are you referring to focal distance? For example, how a 50mm lens for a full frame camera will look like a 100mm lens on a cropped camera. The aperture, or F -Stop, on any lens will always remain true to its measurement no matter if the camera’s sensor is full frame or cropped.

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