>In a message dated 98-04-11 10:01:44 EDT,
>Foxy you write:
><< A while ago someone posted that a 50mm reversed on a 100mm did not
> vigenette. I tried it on my 75-150 zoom and it nearly disappeared at
150mm.
> Probably just a zoom thing though. Foxy >>
>
>Hi Foxy,
>You guys have got me curious,since I'm into this macro thing. I looked up
>what John Shaw had to say about stacking. (Nature Photographer's Field
>Techniques pg 118 -121). He says you can cure vegnetting by 2 ways. 1)
Add
>some extension between prime lens and body. 2) increase the focal length
of
>the reversed lens. He says you can get up to 2X with good results and 4X
is
>absolute max. (Magnification = Focal length of prime lens / Focal length
of
>reversed lens.)
>Always leave the reversed lens wide open. His favorite is the Nikon 105
short
>mount stacked on a 200mm.
>BW
I've got this book, but I don't have a longer lens (90mm then 300mm), so I
tried 50 stacked on 90. He also says not to use a macro lens for the stacked
lens. So to get 2 times with little light loss, I need a 200mm (Zuiko of
course) and a 100mm short mount/projection lens from somewhere.
I tried to add extension on the 90mm (it focuses to 1:2), but it wasn't
enough. Someday soon.
Foxy
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