We Are Borg : 無料・フリー素材/写真
We Are Borg / Riebart
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | This is a buckyball consisting of twenty hexagons and twelve pentagons making for 180 magnets in total (I think my math is right...).The light is actually from a red laser pointer (I will touch on this in a moment), not green. Green lasers are at a short enough wavelength that the beam would actually be visible in this photograph, due to reflection off of airborne dust particles.Photoshop was used to rotate the 'pure' portion of the red hues over to green.Technical note: Because the almost all digital cameras use a Bayer filter (The exception being those based on the Foveon X3 sensor ship), the use of a red laser pointer as the primary source of illumination actually reduces the effective resolution of the camera by about 75%!Because of the pattern used in the Bayer filter, only about 1/4 of the photosites are sensitive to the wavelength produced by the red laser pointer, which reduces the spatial resolution of the resulting image by about 75% (Assuming the only light source is that laser pointer)!This can be important to keep in mind when photographing certain subjects. In areas where the only light is, for example, candle light, you can expect a sharp dropoff in spatial resolution of the image, independent of camera shake and focus issues. |
| 撮影日 | 2010-05-25 19:40:36 |
| 撮影者 | Riebart , Winnipeg, Canada |
| タグ | |
| 撮影地 | |
| カメラ | NIKON D90 , NIKON CORPORATION |
| 露出 | f/9.0 |
| 開放F値 | f/9.0 |
| 焦点距離 | 200 mm |