Quick Tip: Remember That Your Sensor Is Upside-Down

No, your image sensor isn’t really upside down, but the image projected onto it is. This isn’t really important for the act of taking a photo, because the camera flips the image for you. It IS important, however, when you clean your sensor. Keeping this fact in mind can save you a few swabs (and a few bucks).

After swabbing a sensor, it’s a good idea to take a test shot and check for dirt left behind. I don’t know about the rest of you, but I rarely get it all on the first try. I usually end up with a few spots on the top or the bottom of the image. When I go back for round two, I have to decide which end to pay more attention to, because the swabs don’t have a perfect reach across the entire height of the sensor. Knowing that the image is projected upside-down onto the sensor , I know that if I have spots on the top of the image I need to swab toward the bottom of the sensor.

It works, and it’ll save a few swabs.

This entry was posted in Quick-Tip on by .

About Brian Auer

a photography enthusiast from North Idaho. He's also the guy behind the Epic Edits Weblog. As a hobbyist photographer since 2003, his passion has been to constantly improve his photography skill set, to share his own knowledge with others, and to become an integral part of the photographic community.

2 thoughts on “Quick Tip: Remember That Your Sensor Is Upside-Down

  1. Andrew Ferguson

    This reminds me, I totally forgot to tell you that I (finally) got over my deathly fear of my camera’s innards and cleaned the sensor last week!

    The guys at the camera store were way helpful and it was easier than I thought. :)

    I was suffering from dry dust though, so I was using the brushes instead of the swabs.

  2. Brian Auer Post author

    Congratulations! I told you it wasn’t so bad. It’s a camera, not a delicate flower. You’d have to be pretty rough with things to do much damage.

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