Want to Buy Olympus OM-40.5 adapter -OR- 49-40.5 step-down ring

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tbransco

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Aug 22, 2016
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48.5 N, 123.4 W
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Unable to find either adapter available online, but surely these adapters exist out there. Perhaps in your surplus-to-requirements drawer?
 

thuggins

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I don't know what you mean by an "OM-40.5 adapter" but assume you are referencing the 49mm "small" filter ring size of OM lenses. If you are just looking for a step down ring, try the Evil Auction Site. I have good luck there for odd size rings, including the half millimeter steps.

Why are you looking for this step down ring? Do you have piles of 40.5mm filters that you are aching to use on OM lenses? Perhaps you mean a step up ring?
 
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tbransco

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Joined
Aug 22, 2016
Messages
53
Location
48.5 N, 123.4 W
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Multi Format
thuggins said:
Why are you looking for this step down ring?
Click to expand...

I want to reverse mount an enlarger lens (40.5mm filter thread) onto some OM-mount extension tubes. I already have an OM-49mm reverse adapter, so I either step down from that to 40.5 or find an OM-40.5 adapter, i.e., internal OM-mount on one side, and external 40.5mm threads on the other.
 
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tbransco

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Joined
Aug 22, 2016
Messages
53
Location
48.5 N, 123.4 W
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Multi Format
Thanks for the links, Digger. I'll certainly keep them in mind if nothing else materializes, but with currency conversion, shipping, and duties added in, I have to keep looking for better value.
 

Digger Odell

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Oct 18, 2018
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Wisconsin
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I have gone through the same issues finding things to fit. There is almost always a way to find what your looking for. The search terms are key. Try macro reversing ring. Also some times I've resorted to using multiple adapters to get what I need. What usually happens is I order something, then find exactly what I needed about a day later. I have had good results with the cheap rise(UK) brand stuff from china.


https://www.ebay.com/i/173757985953...RvMRB_GYG6C3JhjmB_umkGvNt7AbTetwaAqlKEALw_wcB



https://www.bhphotovideo.com/c/prod...7DAhfyZ2fRmZiy7ILXuwlkGgLKq6tepkaAuwgEALw_wcB

https://www.ebay.com/itm/49mm-49mm-...ing-reverse-macro-Adapter-49-49-/162494449792
 

MattKing

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Apr 24, 2005
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I have had good success with step up and step down rings on Amazon.ca.
They come from China, and can be slow, but they do arrive, and are inexpensive.
 
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tbransco

Member
Joined
Aug 22, 2016
Messages
53
Location
48.5 N, 123.4 W
Format
Multi Format
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