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eliu joined: 2007-08-09 posted: 11478 promoted: 617 bookmarked: 187 新竹, 台灣 |
這是相機還沒放大(T)時所看到的黑圈,因為外加的微距攝影放大鏡的直徑只有約1cm,掛在相機的鏡頭(3cm)前面會造成這個黑圈。當相機焦距拉長後, 也就是放大後,黑圈就不見了。
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本人已不在此站活動 joined: 2007-09-19 posted: 4946 promoted: 325 bookmarked: 206 歸隱山林 |
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eliu joined: 2007-08-09 posted: 11478 promoted: 617 bookmarked: 187 新竹, 台灣 |
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eliu joined: 2007-08-09 posted: 11478 promoted: 617 bookmarked: 187 新竹, 台灣 |
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