Tycoon 400mm F5.6 ED 400 Specifications
analog/digital limited (dumb mount - aperture priority or manual modes only)
Diagonal Angle of View:
Number of Aperture Blades:
manual focus only
thread mounted, round shape
2014 by YiXiong Optics Apparatus Ltd. Co.
The Tycoon scopes were presented at Photokina 2014. Tycoon's PL25mm eyepiece would transform the lenses into spotting scopes. Anyway, as of 2017 there is no sign of these lenses ever to appear in reality.