Yes, you are right, but sometimes I do like to open my lens to do something
like that:
http://www.accura.com.hk/OM/pict/m03.jpg
135/4.5 at F5.6 1/125s ISO200, no flash.
C.H.Ling
----- Original Message -----
From: "Matt BenDaniel" <matt@xxxxxxxxxxxx>
> C.H.,
>
> The only reason one stop darker is a problem is for focusing. To get good
depth of field, you need to use f/16 - f/32 anyway, so the 1.4x does not
make the exposure itself more challenging. The one stop down that 1.4x
yields, also gives you the commensurate increase in depth of field that you
need anyway.
>
> Matt
>
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