Nikon D600 sensor dust problem (recorded with pinhole lens) : 無料・フリー素材/写真
Nikon D600 sensor dust problem (recorded with pinhole lens) / Darron Birgenheier
| ライセンス | クリエイティブ・コモンズ 表示-継承 2.1 |
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| 説明 | The Nikon D600 is developing a reputation as being plagued by dust or oil on the sensor, probably from some design defect or quality control issue. The worst of the spots almost always appear in the upper left portion of the frame, leading many to suspect a source of the dust in the camera itself, at that corner of the sensor (upside down, naturally). I have cleaned my sensor a few times with “canned air”, which does improve matters slightly. I have not tried more aggressive sensor cleaning techniques, and will not do so until I have no other recourse.This image is a 2048x2048 1:1 crop of a full-frame image taken with my D600. The crop is from the upper left corner of the original image. Have a look at the full 2048 pixel image to see detail (right-click on the image and choose “Large 2048”).The "lens" was a Holga pinhole of 40mm focal length, with a .25mm aperture and a focal ratio of f/160. This lens was selected because it gives the sharpest detail of any sensor dust. I used a 30-second manual exposure at ISO400. I chose this speed rather than the base of ISO100 to keep the exposure time reasonable. The lens was pointed at a completely white screen on my LCD PC monitor. I kept the camera moving during the exposure so as to record no subject detail, leaving only the dust rendered. I chose the exposure to put the hump of the histogram about in the middle. The vignetting is caused by the pinhole lens.A faster lens aperture will allow a shorter exposure, but much less distinct dust. This is why sensor dust is rarely noticed- a common focal ratio of perhaps f/5.6, and a complicated subject will almost always hide any small dust particles on the sensor.I may be sending my D600 back to Nikon for service or replacement, if I can be assured that they have developed some sort of permanent solution to this widespread problem. |
| 撮影日 | 2012-11-12 00:34:15 |
| 撮影者 | Darron Birgenheier , Reno, NV, USA |
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| 撮影地 | |
| カメラ | NIKON D600 , NIKON CORPORATION |
| 露出 | f/1.4 |
| 開放F値 | f/1.4 |
| 焦点距離 | 50 mm |