jasondunsmore Posted November 20, 2005 Share Posted November 20, 2005 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 along exposure. Thanks. Link to comment Share on other sites More sharing options...
mark u Posted November 20, 2005 Share Posted November 20, 2005 What camera are you using? Are you getting this effect on all your photos, or just this one? Link to comment Share on other sites More sharing options...
john schroeder Posted November 20, 2005 Share Posted November 20, 2005 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. Link to comment Share on other sites More sharing options...
berg_na Posted November 20, 2005 Share Posted November 20, 2005 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. Link to comment Share on other sites More sharing options...
peter_white2 Posted November 20, 2005 Share Posted November 20, 2005 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. Link to comment Share on other sites More sharing options...
jasondunsmore Posted November 20, 2005 Author Share Posted November 20, 2005 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. Link to comment Share on other sites More sharing options...
john schroeder Posted November 20, 2005 Share Posted November 20, 2005 What is even more amazing is that I recognize this as a Galileo thermometer. Link to comment Share on other sites More sharing options...
berg_na Posted November 20, 2005 Share Posted November 20, 2005 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.<div></div> Link to comment Share on other sites More sharing options...
jasondunsmore Posted November 21, 2005 Author Share Posted November 21, 2005 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. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now