I have an older 40mm C T* lens which takes Series 104 filters. These have a bayonet mount and are 104mm in diameter.
I am keen to get a UV filter to protect the front element and also a lens hood mainly for protection.
What are my options? Are there third-party filters or adapters available? Anyone got these items for sale?
Roger

I am keen to get a UV filter to protect the front element and also a lens hood mainly for protection.
What are my options? Are there third-party filters or adapters available? Anyone got these items for sale?
Roger