I bought this Vivitar lens cheap and I'm having trouble identifying the mount. I believe it's a Version 4 Serial number is 22128668

Vivitar mount

  • \$\begingroup\$ do you have its diameter? \$\endgroup\$
    – phuclv
    Jul 16, 2018 at 3:37

1 Answer 1


It is likely a Canon FL mount. If you are looking for an adapter, it is compatible with the Canon FD mount using stop-down metering. See Evolution of the Canon FD Mount.

If you'd like, you can measure the mount diameter to compare with a list of lens mounts (alphabetical, by-register, Wikipedia).

FL and FD mounts

  • \$\begingroup\$ There's no may be to it, the lens is an FL mount lens. \$\endgroup\$
    – Michael C
    Jul 16, 2018 at 12:47

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