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Re: [OM] B-300 on an Zuiko?

Subject: Re: [OM] B-300 on an Zuiko?
From: alias@xxxxxxxxxxxxxxx
Date: 16 Jan 2002 09:25:36 -0000
On Tue, 15 Jan 2002 23:07:06 -0800, Jim Brokaw <jbrokaw@xxxxxxxxxxx>
wrote:

on 1/14/02 6:03 AM, William Clark at wclark@xxxxxxx wrote:

> Hey all,
>=20
> I have been thinking of picking up a B-300.  Has a good reputation.
> I have a couple of questions though.
>=20
> 1.  It seems that this 1.7x teleconverter will not increase a lens' =
f-stop.
> How is this possible?
>=20
> 2.  If I put it on top of my 135 2.8, I will get a 230 2.8 (if 1 about =
is
> true).  What will be the performance of such a setup when compared to =
the
> 200 f4.  I thought this setup would be good for astrophotography.
>=20
> Thanks!!!
> -Bill
>=20
I don't know about astrophotography, but I use the B-300 with great
success and much pleasure on the other end of the length scale: for
macrophotography. It transforms the superb 90/2 into an excellent
150/2.5 macro lens (max aperture estimated).=20
I think that the 135/2.8 will effectively become something like
230/3.5...

=46rank van Lindert
Utrecht NL.



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