Cheap extension tubes (bayonet + intermediate screw) - thread diameter/pitch?

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Eggplantt
Eggplantt Regular Member • Posts: 136
Cheap extension tubes (bayonet + intermediate screw) - thread diameter/pitch?

Whilst I'm concerned with the Sony E-Mount 'version', I would still like to hear from anyone who has this style of cheap extension tube-

What is the diameter of the screw? Is it compatible with any standard filter thread diameters?

I haven't found a clear answer online (one person said theirs was M52x0.75 pitch), and nothing in the customer reviews/Q&A section of the sales page, for any of them.

Do include which bayonet mount yours are for, and even if you could remember the link- although I doubt these things change that frequently.

Thanks! I've got a mini project that'll be posted here once I get an answer and decide whether to use this route to adapting a certain lens... The bayonet to threading is quite useful, even though I know there are alternatives which get the same thing- still curious. These could also be abit cheaper too.

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