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|| SportsShooter.com: Member Message Board
A thin line running through images
Joseph D. Sullivan, Photographer
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Long Island | NY | USA | Posted: 9:11 PM on 11.21.10 |
->> Before I call Canon or Jeff Snyder, I thought I would try this message board first. I seem to have developed a line running through all of my images. It reminds me of a scratch on the shiny surface of film that reproduced as a white line on a print. It appears in the same spot on all images on the card. I magnified one image and ran through all of them in photo mechanic and it was there on all of them. On some, it appeared the whole length of the image and others, not so. At normal magnification, it appears white but when magnified and apparently not there, it really is but it's changed color. It's always in the same spot on the image and it has appeared now on different assignments.
The camera is my refurbished Mark IV with about 10K clicks on the shutter. The first thing I'm thinking is a new shutter. Thanks in advance for any suggestions. |
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Randy Sartin, Photographer, Assistant
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Knoxville | TN | USA | Posted: 9:19 PM on 11.21.10 |
| ->> Really stupid question, and one that I'm sure you have already addressed, but have you opened the images in anything other than PM and made sure the line was still there? |
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Joseph D. Sullivan, Photographer
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Long Island | NY | USA | Posted: 9:27 PM on 11.21.10 |
| ->> I opened an image in PM, then dragged the frame to PhotoShop C4. Yep, it's there. |
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Paul Alesse, Photographer
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Centereach | NY | USA | Posted: 9:48 PM on 11.21.10 |
| ->> Joe... can I see an example? |
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Joseph D. Sullivan, Photographer
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Long Island | NY | USA | Posted: 10:08 PM on 11.21.10 |
->> Paul... click on the link and go to the image. The line in this image is blue, not white and runs the length about a quarter of the way from the right side.
http://www.sportsshooter.com/joedsull/imageline/ |
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Brian Freed, Photographer
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Bethlehem | PA | USA | Posted: 11:03 PM on 11.21.10 |
| ->> I had a similar issue with my D3. It had a hot pixel, and the line would go directly through that pixel across the whole sensor. Sent it back to Nikon, and they said the sensor was bad. No problems since. |
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Otto Kitsinger, Photographer
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Boise | ID | US | Posted: 11:05 PM on 11.21.10 |
->> Is that the size you shot it at?
Even without the answer, I wonder if there is a bad row coming off the sensor - perhaps not the individual photo elements, but the way they come off the row at the end. I recently had to return a new camera for having one white row of pixels in the same spot on every shot.
If you shot at this reduced size, I wonder if that could explain the different colors; it's mixing with pixels next to it. |
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Joseph D. Sullivan, Photographer
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Long Island | NY | USA | Posted: 7:32 AM on 11.22.10 |
| ->> Brian, Otto... The pic was changed from 72 to 300 dpi, no cropping. I took the camera out this morning with a new card and the same lens and shot a dozen frames. I saw the line on one or two frames and it was more difficult to see but it was there, so it's not a card issue I assume now. A sensor issue seems likely because of the fineness of the line. |
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Joseph D. Sullivan, Photographer
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Long Island | NY | USA | Posted: 7:47 AM on 11.22.10 |
| ->> I took more frames with the same card as before and the line is there. It is easier to see when it runs along a dark surface and it was blue in all of the frames today. The images were magnified in PM right off the card. When one shot was dragged into PS and lightened a little to compensate for the underexposure and dark subject, it was still there. Must be a row on the sensor. |
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