> Date: Tue, 9 Apr 2002 21:52:19 -0400
> From: "Ray Amos" <[EMAIL PROTECTED]>
> Subject: EOS IS & digital
> 
> If I use a 300 mm IS lens on a D30 camera, the effective focal 
> length becomes 480 mm.  

No, the effective focal length stays the same.
You receive a picture field equivalent to that
of a 480 mm lens on an analog camera.
You simply crop and use a higher enlargement ratio.

> Does the IS still help two stops 

Yes, of course.

-- 
Michael Quack <[EMAIL PROTECTED]>
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