I took these
images with collimating type equipment, which is called "Digisco" or
"Digiscoping"
in Japan three days ago.
These images are
in the raw, and when exchanging the focus distance as the image that these
images were taken with a 35mm film camera, it is equivalent to approximately 2,
500mm .
As for this system, refer to the following:
https://ja.wikipedia.org/wiki/デジスコ
www.digisco.com/
www.kowa-prominar.ne.jp/digisco/
www.nikonvision.co.jp/how_to/digisco/
www.nikonvision.co.jp/how_to/digisco/
Left side of this page, Collimated Photographing System
(Images are male only)