On 25 May 2005 at 0:28, Graywolf wrote:

> You can figure that as 2/3's of a stop. F/2.0 set on the lens would actually 
> be
> about f/2.5 with the converter. That is figuring 2.0 - 2.2 - 2.5 - 2.8 - etc.

The Pentax 1.4x convertors lose a stop, the 1.7x 1.5 stops and the 2x 2 stops.


Rob Studdert
HURSTVILLE AUSTRALIA
Tel +61-2-9554-4110
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Pentax user since 1986, PDMLer since 1998

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