NSURIT@xxxxxxx wrote:
> Yes, I know many on the list already use similar set ups for doing close up
>work, however there are those who might not think to try this. For those who
>don't or haven't, give this a try. I'll leave it to the many on this list
>who are smarter than I am to explain the physics. This is the order in which
>everything was attached. e-1 body (but could have been an OM), 4 thirds
>adapter, 2X-A teleconverter (but could have been your third party converter),
>25mm extension tube (or other length) and 90mm f2 Zuiko ( or your third party
>90mm macro).
>
This is basically the way the Vivitar 2x Telemacro adapter works. It
uses less extention, as it is designed to get to 1:1 with a 50mm lens,
and the extention is variable to allow focus to infinity without taking
a piece out. The Panagor 2x macro adapters is similar, but varies the
distance of the exender unit from lens and body without changing the
length. They work on the 90/2, but don't go down to 1:1, propbably about
1.5:1.
Your set-up is a nice solution to the problem of the 2x-a not fitting on
the 90/2, which is a frustration to me. The Tamron SP 90/2.5 with
matching 2x becomes a 180/5 that focuses direct from infinity to 1:1.
>Next time, I may put a Raynox or other high quality close up lens on the
>front of the 90mm
>
I'd be very interested to know how well the Raynox works.
> What other combinations have folks used that fall outside the normal?
>
Sorry, I'm pretty dull that way. If not carrying specific macro gear, I
usually have the Viv 2x TMacro in the bag. Simple, effective and no more
trouble than an extention tube.
Moose
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