Carsen Lens

[mark_h]

I am looking for any information on lens sold by the W. Carsen Co.. Carson founded his company in 1946 and up until 2000 they distributed Olympus consumer products in Canada. At some point they sold lenses under the carson name that I think were made for them by Olympus. Any further information would be a great help.

I know of the following 3 lenses:

Carsen Telephoto 1:4.5 f=200mm
Carsen 1:2.4 105mm
Carsen Wide Angle 1:2.8 f=35mm

[grains]

I have a Carsen telephoto lens 1.4 200mm. I don't know much about them, do you. I just picked it up at a second hand shop. It's a screw mount and fits on my old screwmount Asahi Pentax S1...