 Kerby Pfrangle |
Enter to beauty 17 I put Enter to Beauty 17 in the contest today a picture of an old red barn build in 1917. On the thumbnail viewing the image it has some lines across the barn but when you click into the barn and enlarge the red barn it is perfect. Looks exactly like the orginal image. Why would the lines show up on the thumbnail. Kerby
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Melissa L. Zavadil |
Kerby, I could be wrong but I believe that it is just the way the program dealt with the lines in the barn when condensing the file for the thumbnail. I have seen this a few times.
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Melissa L. Zavadil |
By the way it is a really cool picture! I love the barn and the deep red tones that you caught! These barn photos of yours keep getting better!
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Terry R. Hatfield |
The Thumbnail Looks Great Though Dont You Think?:-)I Havent A Clue What Caused It!
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Kerby Pfrangle |
Thank Melissa, It was just weird that the lines were in the thumbnail and when you enlarge the barn the image was perfect. That barn has tons of history to it and is so interesting to view. It an awesome barn.
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Kerby Pfrangle |
Terry I am not complaining the The thumbnail looks awesome. It just different than what the real barn looks like. Both are beautiful. I just wondered why it happened. Kerby
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Christopher A. Vedros |
Kerby, This phenomenon happens sometimes when you have a pattern of many parallel lines in the picture, and then view the image at a size smaller than 100% magnification. This happens a lot with Herringbone jackets. It's a limitation of the monitor's ability to display the pattern. It should disappear when you zoom in some. It will never show up when you print the image.
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Kerby Pfrangle |
Chris thank you. This has alot of parallel lines in the barn. Thanks for the explaination. Kerby
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John A. Lind |
Kerby (and Chris), It's not the monitor. It's the "downsizing" algorithm used to make the thumbnail . . . and how the larger photograph was sampled by it to reduce its size, although you're on the right track. The effect you're seeing is called a "Moire Pattern," a form of aliasing. It's caused by a sampling rate (or frequency) being close enough to another frequency. In this case that freqency is the regular pattern of horizontal boards that make up the barn wall. See this site for an excellent explanation about how this occurs: -- John Lind
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