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Do any of your extension tubes mate with the Oly teleconverters?

Started Feb 23, 2021 | Questions thread
Peter 1745 Senior Member • Posts: 2,022
Re: Do any of your extension tubes mate with the Oly teleconverters?

WileEC_ID wrote:

I confirmed all of the above and compared the extension tube I have next to the O 40-150mm f/2.8 and without compromising the design of the tube, I won't be able to create that cutout. See image below:

The Oly 40-150mm f/2.8 Pro has a decided cutout for the tab on the MC-14 and MC-20

So - it will be a different brand to make this work. Sigh - at least we are clearly documenting what is critical to making this work. Narrow enough area in the central part of the extension tubes AND room for the special tab on the teleconverters to go. It looks like this lens also has two contact points. Examining the two teleconverters - each has a single contact point, but one is further from the tab than the other. I'm guessing that which contact point is touched tells the lens and camera which TC is attached. I see no corresponding contacts on the two extension tube sets I have. Am curious if any of the other sets have these? Or perhaps I am completely wrong about the purpose for this single contact element.

The Olympus teleconverters are only official compatible with the M.Zuiko Digital ED 40‑150mm F2.8 PRO, M.Zuiko Digital ED 300mm F4 PRO, and the new 150-400 f4.5

I don't own any of these lenses and none of the lenses I have feature the 2 extra contact points. In fact I wasn't even aware of their existence until you pointed them out.

Your surmise that the contacts tell the lens if a MC14 or MC20 is attached seems reasonable to me.

I am not aware of any extension rings that feature pass through electronics for them. I would be very surprised if they will ever appear as the use of teleconverters combined with extension rings is a very niche activity, and most of those who do combine them use the Oly 60mm macro lens (which doesn't have the extra contacts anyway).

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Regards,
Peter
'Keep taking the photos'

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