http://koiwide.com/j-lens_fujinon5012-1

https://spiral-m42.blogspot.com/2012/04/general-scientific-corp-miltar-75mm-f2.html

http://metalmickey.cocolog-nifty.com/blog/2012/10/eyemom-6445.html

http://www.videoalpha.jp/column/5350.html

https://dc.watch.impress.co.jp/docs/review/dressup/566984.html

https://ja.wikipedia.org/wiki/%E3%82%A2%E3%82%A4%E3%83%A2

https://www.calkovsky.com/sold-hand-crank-bell-howell-eyemo-35mm-movie-camera-100mm-ilex-lens/

japanese.engadget.com

https://akiba-pc.watch.impress.co.jp/docs/news/news/1218139.html

https://www.bigomagazine.com/hkdisney-demo/

https://www.asahi.com/articles/ASMCF5HK3MCFUHBI02C.html

http://www.news24.jp/sp/articles/2019/11/14/06543883.html

https://ameblo.jp/raylow/entry-11397170754.html

https://www.gizmodo.jp/2019/11/xperia-3-early-2020.html

https://gigazine.net/news/20191113-windows-10-november-2019-update/