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規格


焦距 30mm(相等於35mm相機標準:60mm)
鏡頭光學結構 6組7片(1片DSA雙面超級非球面鏡片、1片EDA非球面鏡片、1片非球面鏡片)
對焦系統 高速Imager AF系統(MSC對焦技術)
對角線畫角 40°
最近對焦距離 0.095米
最高放大率 1.25x(相等於35mm相機標準:2.5x)
最小拍攝範圍 13.9 x 10.4毫米
光圈葉片數目 7(圓形光圈葉片)
最大光圈 f3.5
最小光圈 f22
濾鏡尺寸 Ø46毫米
尺寸:最大直徑 x 長度 Ø57x 60毫米
重量 128克
隨機配件 LC-46鏡頭蓋、LR-2鏡頭後蓋、使用說明書及保用證

Depth of field

When focusing on a subject, there is an area behind and in front of the focused point that is also in focus. This area is called depth of field. The amount of area behind a focused point will always be greater than the area in front of the focused point regardless of aperture. Depth of field becomes deeper when the focal length is short (wide-angle lens), the focusing distance is long, and aperture is small.

Depth of field tables (focal length: 30mm)

Columns: aperture values / Rows: focusing distance (m) [1]
  0.095 0.1 0.13 0.15 0.2 0.5 1 2 5
3.5 0.095 to 0.095 0.100 to 0.100 0.130 to 0.130 0.150 to 0.150 0.199 to 0.201 0.488 to 0.513 0.947 to 1.060 1.784 to 2.278 3.802 to 7.334 15.45 to ∞
4.0 0.095 to 0.095 0.100 to 0.100 0.130 to 0.130 0.149 to 0.151 0.199 to 0.201 0.487 to 0.514 0.941 to 1.068 1.763 to 2.314 3.703 to 7.737 13.908 to ∞
5.6 0.095 to 0.095 0.100 to 0.100 0.130 to 0.130 0.149 to 0.151 0.198 to 0.202 0.482 to 0.520 0.919 to 1.099 1.681 to 2.477 3.346 to 10.03 9.850 to ∞
8 0.095 to 0.095 0.100 to 0.100 0.129 to 0.131 0.149 to 0.151 0.197 to 0.203 0.474 to 0.529 0.889 to 1.146 1.578 to 2.752 2.947 to 17.32 6.991 to ∞
11 0.095 to 0.095 0.100 to 0.100 0.129 to 0.131 0.149 to 0.151 0.196 to 0.204 0.465 to 0.542 0.851 to 1.221 1.453 to 3.267 2.525 to ∞ 4.966 to ∞
16 0.095 to 0.095 0.100 to 0.100 0.129 to 0.131 0.148 to 0.152 0.195 to 0.205 0.452 to 0.562 0.802 to 1.346 1.307 to 4.465 2.102 to ∞ 3.532 to ∞
22 0.095 to 0.095 0.099 to 0.101 0.128 to 0.132 0.147 to 0.153 0.193 to 0.208 0.435 to 0.594 0.742 to 1.580 1.147 to 9.419 1.704 to ∞ 2.519 to ∞
  • 1 The diameter of the permissible circle of confusion is 1/60mm.
  • 規格如有更改恕不另行通知。

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