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

Subject: Re: [OM] B-300 on an Zuiko?
From: "Jeff Keller" <jeff-keller@xxxxxxx>
Date: Mon, 14 Jan 2002 08:53:19 -0800
The B-300 screws on the front of the lens, so it may catch
more light than the lens would without it. If I remember the
B-300 is about 80mm in diameter ...

230/80 = 2.875

so it probably would work but you need to check the B-300
diameter.
-jeff

----- Original Message -----
From: "William Clark" <wclark@xxxxxxx>
To: "'Olympus List'" <olympus@xxxxxxxxxxxxxxx>
Sent: Monday, January 14, 2002 6:03 AM
Subject: [OM] B-300 on an Zuiko?


> Hey all,
>
> I have been thinking of picking up a B-300.  Has a good reputation.
> I have a couple of questions though.
>
> 1.  It seems that this 1.7x teleconverter will not increase a lens'
f-stop.
> How is this possible?
>
> 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.
>
> Thanks!!!
> -Bill
>


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