作為高倍光學望遠鏡的轉接方案,Digiscoping為攝影師提供了諸多的方便,而此次針對尼康1系列推出產品,對於打鳥愛好者來說,又多了一個不錯的選擇,下次出門可以考慮是否帶微單來減輕肩上的載重量。
一般單眼相機連接望遠容易產生成像圈(黑輪),NIKON 1系列特色,不但減少成像圈問題,也讓倍率增加
Digiscoping Adapter DSA-N1的主要特點
Digiscoping Adapter DSA-N1與尼康1體連接到尼康單筒與目鏡,使超長焦拍攝
直接連接到尼康1接頭
安裝於尼康單筒望遠鏡,因為不需要光軸調節。
允許使用相機的A的:光圈優先自動曝光和M:手動曝光模式
易於攜帶緊湊的尺寸
兼容各種目鏡,並且能夠超長焦拍攝,在不同的焦距範圍設置
組合示例:EDG單筒85 + FEP-38W + DSA-N1 +尼康1 J1
DSB-N1除了可連接望遠鏡外,也可連接NIKON顯微鏡
Combination example:
EDG Fieldscope 85 + FEP-38W + DSA-N1 + Nikon 1 J1
詳細規格
DSA-N1*1 | |
---|---|
Size尺寸 |
58mm (Height) x 68mm (Diameter) (without cap and projections) |
Weight 重量 | 180g |
相容 Nikon 1 cameras |
V3, V2*, V1*, J4, J3*, J2, J1*, S2, S1* Compatible cameras (as of September, 2014) |
相容 1 NIKKOR lenses | - |
相容 Fieldscopes |
EDG Fieldscope 85 VR/85-A VR/85/85-A/65/65-A Fieldscope ED82/ED82 A/EDIII/EDIII A/III/III A/ED50/ED50 A |
相容 eyepieces目鏡 |
EDG Fieldscope eyepieces FEP-20W, FEP-30W, FEP-38W, FEP-50W Wide DS Fieldscope eyepieces 16x/24x/30x Wide DS, 27x/40x/50x Wide DS |
*Firmware A and B should be upgraded to ver.1.20 or later
焦長倍率計算方式
Digiscoping System Diagram for Nikon 1 Series
Calculation of composite focal length
[Composite focal length] = [Magnification of eyepiece] x [Focal length of DSA-N1
(18mm)]
(35mm format equivalent focal length is 2.7x of the composite focal length)
[540mm] = [30x] x [18mm]
(In this case, the 35mm format equivalent focal length is 540mm x 2.7=1,458mm)
Calculation of composite F-number (theoretical value)
[Composite F-number] = [Magnification of eyepiece] x [Focal length of DSA-N1
(18mm)] ÷ Objective diameter of Fieldscope
[F6.4] = [30x] x [18mm] ÷ [85mm]