vertical lines in digital photos

Discussion in 'Mirrorless Digital Cameras' started by jasondunsmore, Nov 19, 2005.

  1. What is the cause of the vertical lines in this photo?

    I was trying to get a sharp image, so I used a small aperature and a
    long exposure.

    Thanks.
     
  2. What camera are you using? Are you getting this effect on all your photos, or just this one?
     
  3. The lines are not verticle but follow the contour of the glass. My idea is that you captured the imperfections the glass. The large depth of field created by the small aperture would allow for this.
     
  4. The 'lines' appear to be caused by slight differences in brightness between adjacent columns in the sensor. This is typically seen in CMOS imagers although I don't know what camera you used. The variations do not change over time so the cameras that use CMOS sensors normally have a function that automatically subtract them out. If you continue to observe this artifact in your images, I'd send the camera back for calibration.
     
  5. They aren't vertical lines. What you're seeing is reflections of some sort. It's not anything related to the sensor.

    Try the same shot with a film camera. I suspect you'll get the same thing.
     
  6. The photo was taken with a Canon 20D. You were right John and Peter, they are just reflections. Although I have seen vertical lines that look similar to the ones in this photo before. It was with a cheaper Sony MVC-CD500 camera. Thanks for the information Berg, that answered my question.
     
  7. What is even more amazing is that I recognize this as a Galileo thermometer.
     
  8. Jason - I suspect the regular banding seen in this photo is not due to some kind of optical reflections, but I won't try to dispute your conclusion.
    00EFjE-26583784.jpg
     
  9. Yep, it's a galileo thermometer.

    The reason I think they're reflections is because the lines aren't exactly vertical, and I can see similar reflections when I look at the thermometer. It's deceptive though.
     

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