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|Saturday 16th April 2016, 06:51||#1|
Join Date: May 2007
Calculation of composite focal length
I founded from Nikon site next
[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)
I will have Swarovski ATX 30-70x95 and swarovski tsl apo 23mm.
If I put Nikon 1 camera to my scope, shall the focal length will be:
30 x 23 x 2.7 = 1863 mm ( 35mm format equivalent )
70 x 23 x 2.7 = 4347 mm ( 35mm format equivalent )
Are my calculation right or shall it be some possibility to error.
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