Like T4 only different

[casualcollector]

Yeah, another T4 thread from the casual collector...

Except this isn't a Soligor or Vivitar T4 lens. It's badged Lentar Automount. It's another variation on the Tokina made 200mm F-3.5. It has interchangeable mounts and they are very similar to but not compatible with the Soligor/Vivitar T4 system. Instead of breech lock style mounting the adapters are retained by a threaded collar. Prior to seeing this on E-Bay I knew nothing about this line of lenses. Has anyone here had any experience with this system?




Shown with a Soligor T4 (left) for comparison.


The back end and meter coupling.


The adapters. Automount top, T4 below.

[Francis in VT]

This looks like the Early T4 mount. Not sure what it was called but as I remember it had limited auto [diaphram]
capabilities. It was shortly replaced by the Adaptal II mt. What got me is "the adapters are retained by a threaded collar" The memory cells are not what they were 50 years ago
so the terms might be off

[casualcollector]

I think this may have come before T4 also. I'm wondering if the threaded collar may have infringed The Tamron Adapta A Matic patent. Adapt A Matic was the predecessor of Adaptal and Adaptal 2.
How's Vermont this summer? I lived there for 25 years and miss it a great deal.