Olympus-OM
[Top] [All Lists]

Re: [OM] XA 35m f2.8

Subject: Re: [OM] XA 35m f2.8
From: "Ulf Westerberg" <ulf.westerberg@xxxxxxxxxxxxxxxxxxxx>
Date: Tue, 16 Jun 1998 18:53:53 +0200
Warren Kato wrote:
>I just bought an XA with flash as a carry-around camera.  I was looking at
the
>tiny lens, about 1.25 cm. in diameter, and comparing it to the front
element
>of the SLR Zuiko 35m f 2.8, which has a diameter of 2.9 cm.
>
>According to my calculations, over 5 times as much light hits the front
>element of the SLR lens as does the XA.  Where does it all go?

OK, as no one else has posted an explanation, I'll have a go with my limited
knowledge.
In order to avoid collison with the mirror assembly a SLR wide-angle has to
incorporate a totally different design than a view-camera as the XA. The XA
has much of it's optics where an OM-camera has it's mirror mechanics.
So distance to the film is much shorter (less loss of light) on the XA.
I'm sure some other list-members can explain this in a much better way.

Ulf Westerberg


< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >


<Prev in Thread] Current Thread [Next in Thread>
Sponsored by Tako
Impressum | Datenschutz