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#1
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Faint horizontal lines on 300D images
"Rowan Crowe" wrote in message om... http://media.sensationcontent.com/ro...ntal-lines.tif i'd love to eyeball the pic, but no way I'm going to download a tif of indeterminate size.. you have a resampled small jpeg or a jpeg crop of the offending area you could post? k |
#2
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Faint horizontal lines on 300D images
"k" wrote in message ... "Rowan Crowe" wrote in message om... http://media.sensationcontent.com/ro...ntal-lines.tif i'd love to eyeball the pic, but no way I'm going to download a tif of indeterminate size.. you have a resampled small jpeg or a jpeg crop of the offending area you could post? k It's 259.9KB. |
#3
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Faint horizontal lines on 300D images
"Rowan Crowe" wrote in message om... I noticed some faint horizontal lines on a 300D print yesterday. I had seen them on my new CRT monitor previously but I assumed that it was a CRT oddity (I'm still getting used to moire after using an LCD for 3-4 years). At the time of the print I thought that I had a blocked jet, but after some more editing just now I've realised that since both the CRT and printer display it, the issue appears to be with the camera. Is this normal? It shows in areas where there is a fair amount of one colour, like sky. I'm hoping it's a normal quirk of the sensor rather than something more serious like a half dead multiplexing transistor. Here's a sample 1:1 crop of some sky, it's not the best example but hopefully the lines are apparent. Can't tell from your sample. I have a 300D and sometimes get faint horizontal lines from my printer, but never see them on my monitor. |
#4
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Faint horizontal lines on 300D images
"Charles Schuler" wrote in message "Rowan Crowe" wrote in message om... I noticed some faint horizontal lines on a 300D print yesterday. I had seen them on my new CRT monitor previously but I assumed that it was a CRT oddity (I'm still getting used to moire after using an LCD for 3-4 years). At the time of the print I thought that I had a blocked jet, but after some more editing just now I've realised that since both the CRT and printer display it, the issue appears to be with the camera. Is this normal? It shows in areas where there is a fair amount of one colour, like sky. I'm hoping it's a normal quirk of the sensor rather than something more serious like a half dead multiplexing transistor. Here's a sample 1:1 crop of some sky, it's not the best example but hopefully the lines are apparent. Can't tell from your sample. I have a 300D and sometimes get faint horizontal lines from my printer, but never see them on my monitor. Zoom in, the lines are very small, like 6 or 7 pixels, but certainly looks wrong and different to my photos from my 300D. |
#5
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Faint horizontal lines on 300D images
"Charles Schuler" wrote in message "Rowan Crowe" wrote in message om... I noticed some faint horizontal lines on a 300D print yesterday. I had seen them on my new CRT monitor previously but I assumed that it was a CRT oddity (I'm still getting used to moire after using an LCD for 3-4 years). At the time of the print I thought that I had a blocked jet, but after some more editing just now I've realised that since both the CRT and printer display it, the issue appears to be with the camera. Is this normal? It shows in areas where there is a fair amount of one colour, like sky. I'm hoping it's a normal quirk of the sensor rather than something more serious like a half dead multiplexing transistor. Here's a sample 1:1 crop of some sky, it's not the best example but hopefully the lines are apparent. Can't tell from your sample. I have a 300D and sometimes get faint horizontal lines from my printer, but never see them on my monitor. Zoom in, the lines are very small, like 6 or 7 pixels, but certainly looks wrong and different to my photos from my 300D. |
#6
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Faint horizontal lines on 300D images
"scott" wrote in message ... "Charles Schuler" wrote in message "Rowan Crowe" wrote in message om... I noticed some faint horizontal lines on a 300D print yesterday. I had seen them on my new CRT monitor previously but I assumed that it was a CRT oddity (I'm still getting used to moire after using an LCD for 3-4 years). At the time of the print I thought that I had a blocked jet, but after some more editing just now I've realised that since both the CRT and printer display it, the issue appears to be with the camera. Is this normal? It shows in areas where there is a fair amount of one colour, like sky. I'm hoping it's a normal quirk of the sensor rather than something more serious like a half dead multiplexing transistor. Here's a sample 1:1 crop of some sky, it's not the best example but hopefully the lines are apparent. Can't tell from your sample. I have a 300D and sometimes get faint horizontal lines from my printer, but never see them on my monitor. Zoom in, the lines are very small, like 6 or 7 pixels, but certainly looks wrong and different to my photos from my 300D. Those look like jpeg artifacts from really high compression settings. (Yes, I know it's a tiff, but once you've got jpeg artifacts, saving as tiff won't get rid of them.) David J. Littleboy Tokyo, Japan |
#7
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Faint horizontal lines on 300D images
Rowan Crowe wrote:
I noticed some faint horizontal lines on a 300D print yesterday. I had seen them on my new CRT monitor previously but I assumed that it was a CRT oddity (I'm still getting used to moire after using an LCD for 3-4 years). At the time of the print I thought that I had a blocked jet, but after some more editing just now I've realised that since both the CRT and printer display it, the issue appears to be with the camera. Is this normal? It shows in areas where there is a fair amount of one colour, like sky. I'm hoping it's a normal quirk of the sensor rather than something more serious like a half dead multiplexing transistor. Here's a sample 1:1 crop of some sky, it's not the best example but hopefully the lines are apparent. http://media.sensationcontent.com/ro...ntal-lines.tif My personal guess is that you shot that image at a high ISO and that the camera applied a lot of colour noise reduction. When you apply a lot of colour noise reduction you get that effect. -- Alfred Molon ------------------------------ http://groups.yahoo.com/group/Olympus_405080/ Olympus 5050 resource - http://www.molon.de/5050.html Olympus 5060 resource - http://www.molon.de/5060.html Olympus 8080 resource - http://www.molon.de/8080.html |
#8
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Faint horizontal lines on 300D images
Rowan,
Can you go into photoshop and look at the individual red, green, and blue channels? You may find one of them is inordinately noisy. But post a full size JPG or a crop (at 100%) then maybe we could figure it out. "Rowan Crowe" wrote in message om... I noticed some faint horizontal lines on a 300D print yesterday. I had seen them on my new CRT monitor previously but I assumed that it was a CRT oddity (I'm still getting used to moire after using an LCD for 3-4 years). At the time of the print I thought that I had a blocked jet, but after some more editing just now I've realised that since both the CRT and printer display it, the issue appears to be with the camera. Is this normal? It shows in areas where there is a fair amount of one colour, like sky. I'm hoping it's a normal quirk of the sensor rather than something more serious like a half dead multiplexing transistor. Here's a sample 1:1 crop of some sky, it's not the best example but hopefully the lines are apparent. http://media.sensationcontent.com/ro...ntal-lines.tif |
#9
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Faint horizontal lines on 300D images
My personal guess is that you shot that image at a high ISO and that the
camera applied a lot of colour noise reduction. When you apply a lot of colour noise reduction you get that effect. Sure looks noisy. Even just the interaction of jpeging and noise might produce strange artefacts. |
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