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[OM] Re: Any experience or comment for Vivitar 2X Marco MC?

Subject: [OM] Re: Any experience or comment for Vivitar 2X Marco MC?
From: Moose <olymoose@xxxxxxxxx>
Date: Sun, 05 Aug 2007 20:47:09 -0700
Michael Wong wrote:
> Dear list members,
> Is there any experience or comment for Vivitar 2X Marco MC? Thanks.
>   
Which one? Vivitar made millions of the 4 element "2X-21", which is 
fairly poor. Bright sun, longish lens, fast film and stopped well down, 
they could produce a decent image. It's best use is as a roughly 26 mm 
auto extention tube by removing the glass elements.

There was a 7 element teleconverter that was sold under many names, 
including Vivitar. The Key to identifying them is that they almost 
always say "2X MC7" or 2X MC-7" and are just over 41 mm in flange to 
flange length.

They are pretty good, and much better than the 4 element ones. Not as 
good as the Oly 2xA, however.

Another good choice is the "Vivitar 2x Macro Focusing Teleconverter MC". 
In addition to being a good 2x teleconverter, it has a helicoid built in 
that allows closer focus than with the lens alone. With a typical 50 
lens, it doubles the focal length while allowing focusing down to 1:1. 
The Zuiko 50/1.4 mounted on it becomes a 100/2.8 1:1 macro lens.

It's not true macro, it has too much field curvature for flat field 
work, but for typical outdoor work, where only the center of the subject 
is in the plane of focus, it's quite good.

Moose

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