Re: [APML] Olympus OM1 and FS102

["westergren" <westergren@netzero.net>]

John,

The light is focussed as a cone of light, so depending on how long your 2
inch adapter extends in front of the T ring, you might have vignetting.  The
cone half angle = ArcTan(1/(scope f ratio*2)).

Don

> O.K.
> i need some clarification,
> my 2inch adaptor i made up for my "T"-ring, has an opening of
47.68mm,,1.87
> inches,
> the "T"-ring opening, is 42.92mm,,1.68inches,
> so my 2inch snout, is wider than the "T"-ring, on the inside,
> ,
> how will this give me Viginetting, with the FS102,
> thanks,
> john,
>
> John E. Pike,
> Marysville WA.
> Where raingear is mandatory,
> and
>  If it doesn't move it turns "green"
> http://home1.gte.net/res0hnzl/index.html
> ,
> ,
> ,
> ,
> ,
> ,
>
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