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Re: [OM] Close up filters again

Subject: Re: [OM] Close up filters again
From: Wayne Shumaker <om3ti@xxxxxxxx>
Date: Wed, 05 Jan 2022 16:45:07 -0700
At 1/5/2022 02:30 PM, Wayne wrote:
>That looks promising Wayne, AF I assume?  Does the Sony do focus stacking
>with that lens?
>
>...Wayne

No AF I just moved in and out hand held to get the focus. I took multiple shots 
to get this one. I couldn't stand still enough anyway. AF hunts a lot with this 
combination, so MF and dance around.

WayneS


>> -----Original Message-----
>> From: olympus <olympus-
>> bounces+wayne.harridge=structuregraphs.com@xxxxxxxxxxxxxxxxx> On
>> Behalf Of Wayne Shumaker
>> Sent: Thursday, 6 January 2022 4:43 AM
>> To: Olympus Camera Discussion <olympus@xxxxxxxxxxxxxxxxx>
>> Subject: [OM] Close up filters again
>> 
>> I recently acquired a 500D and have been testing on the sony 100-400. One
>of
>> the reasons I was interested in the magnetic filter approach that now
>eludes
>> me.
>> 
>> What I notice is that at 400mm the working distance ranges from 50cm at
>> infinity (hence 500D name) to about 28cm at lens MFD. However it does not
>> seem like the magnification changes all that much. Only tweaking the Zoom
>> does the magnification really change.
>> 
>> It is a different way of working to a traditional macro lens where
>distance sets
>> the magnification. But this also implies more working distance and less
>critical
>> to getting exact distance to subject as magnification can be adjusted with
>> zoom.
>> 
>> (from wikipedia the magnification would go from 0.8 to 1.05 with this lens
>at
>> 400mm. The lens focal length probably changes at MFD though as ~28cm was
>> what I measured vs 33cm calculated)
>> 
>> My first OK photo with the 500D CU at 400mm/F9 hand held.
>> 
>> https://photos.app.goo.gl/3Tq4FpYUnhsS2kKe8
>> 
>> WayneS
>> 
>> --
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>
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