Well -- and hello ....
For about the last month and a half I have been tryin to produce pictures of the camera, that is appearing on the 'rendered' icon of the Display Mode Icons-plugin (if you don't know, what I am saying, just update your plugins .....)
Eventually I got something happening.
The camera was modelled by my brother Jyrki, whom you may know as yardan74. At the time the icon was made, there was no user side on that camera. That and the optics and the rest of the technical stuff were added later on. Just because we thought it was cool! 
These picture are hyperlinks: Just click! The original size is 1600x900 ("platonic" or what?)
Iris:
Who made who:
Mind the knobs and buttons!
Side view. Just wait...
The users' side:
Jyrki recycled most of it from his old projects 
And what do we have here?...
Fun! I guess...
Just stripping all the mechanical stuff off....
Mostly it is Jyrki's making, but I reworked the lenses just for the "Fun!" of it.... (and for the challenge and because I just needed to know, if I could.....)
So ... sorry for taking my time, but honesty, this was not my first attempt on these pictures at all.
The total rendering time to those13 pictures was somewhere around 11 hours. ( I forgot to check, but it took a day at work and then some....)
What can I say?
Enoy!