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[OM] Re: Tele-Converters + Lunar Eclipse pics

Subject: [OM] Re: Tele-Converters + Lunar Eclipse pics
From: "Carlos J. Santisteban Salinas" <cjss@xxxxxxxxxxxxx>
Date: Sat, 21 Feb 2004 15:59:57 +0100
Hi all,

Paul Schings wrote:

>Depth of field with the 300/4.5 set at a marked f11, with
>the 2x converter, is the same as any other 600mm lens shot at f22.

...which I've read somewhere that would be more or less the same DOF of a
300mm @ f11, thus allowing the use of DOF scale on the focusing barrel.

Moose wrote:

>Don't know about Vivitar, but the 1.5x Match Mate Kiron was to be
>matched to their 75-150 zoom and vignettes with the 300/4.5.

I've got the 1.5x Match Mate Kiron and the Zuiko 300/4.5. I've used them
together, but I don't recall any serious vignetting. However, my 300 is too
'buried' now to check it out ;-)

Although these pics won't show any vignetting (they're heavily cropped and
downsampled), here are some results of the Zuiko 300/4.5 + Kiron 1.5x combo
(taken with the EOS-300D plus Kindai OM adapter):

<http://217.216.177.119/etc/eclipse/> (just tripod; no tracking, no remote
control -- most uing self-timer)

Enjoy,

...

Carlos J. Santisteban

<cjss@xxxxxxxxxxxxx>
<http://cjss.galeon.com>



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