Sigma 135mm f1.8
As part of a deal on an N2000 film camera, the seller threw in this lens. It mounts and shoots OK on the N2000 body, but there are no AI/AIS rabbit ears and I'm not sure that it would be safe to mount on my D200 body.
The lens is all-metal, built like a tank, and has a huge front element. Don't know the filter size, but it has to be at least 77mm.
Web searches throw up references to a Spiratone 135mm f1.8 and these may be one and the same, but I'm not sure.
Anyone seen this lens before? How do I tell if the lens will mount safely on a D200 body?
Thanks for your help....