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Re: [OM] How does metering work in reverse (was 1:1 with 50mm)

Subject: Re: [OM] How does metering work in reverse (was 1:1 with 50mm)
From: "Red Rover" <red_rover@xxxxxxxxxxxxx>
Date: Fri, 18 Sep 1998 16:27:45 -0700
I've tried this with an OM10 and a 50mm 1.8. It works great. Focus is a bit
difficult to hold, and if you subject has too much depth, parts of it are
going to be out of focus, no way around it. If you don't have OTF, I would
suggest metering with the lens on proper, then setting the camera manually.
Either way, you need to remember to hold down the DOF button at your taking
apeture. I discovered I got better results with the smallest apeture
possible, since it helps out alittle with the extremely shallow depth of
field.
-----Original Message-----
From: Dan Lau <dlau@xxxxxxxxxxxxxxxx>
To: olympus@xxxxxxxxxxxxxxx <olympus@xxxxxxxxxxxxxxx>
Date: Friday, September 18, 1998 11:41 AM
Subject: [OM] How does metering work in reverse (was 1:1 with 50mm)


>On Fri, 18 Sep 1998 12:42, Pauls0627@xxxxxxx wrote:
>> A reversing ring lets you put the lens on "backwards". It has a filter
thread
>>on one side, and a lens mount on the other that mounts onto the camera.
>>
>>Paul Schings
>>Coventry, RI
>
>I've never tried reversing the lens, but since this topic was brought up,
>I'd like to know how metering works when the lens is reversed.  Also,
>how does the aperture get closed down when you take the picture, as the
>linkage is now at the other end of the lens, away from the camera.  My
>naive thinking is that the aperture information is not passed from the
>lens to the camera, so no matter what you set the aperture on the lens,
>the camera will always think it is wide-open.  So can I still use the
>meter of an OM-1, for example, with a reversed lens?
>
>I can understand how a camera that does OTF metering can work, but then
>how do you close down the aperture to take the picture?  I don't remember
>any switch on a 50/1.8 lens other than the DOF button.  Can someone help
>to "initiate" us into this wonderful world of reverse lens photography?
>Thanks.
> -Dan
>
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