Re: EOS Why doesn't my 1.4 50mm or my 2.8 70-200L....

[Jim Davis]

> I had a question pop into my mind today, probably simple, but I
> couldn't explain it.
>
> Wide aperture lenses have shallow DOF, this I know.  My 2.8L and
> 1.4/50 both produce a striking blur and I probably shoot the vast
> majority of my pics at 3.5 and below.
>
> Why, then when you are looking through the camera to focus these
> lenses do you see the whole field in focus?  Isn't the lens operating
> at wide open aperture when focusing in EOS cameras?  >
> --
> Paul Prior .

Paul, if you are indeed seeing the whole depth of field in focus, you must
have set your custom function to show DOF. Check your functions.
You should certainly be viewing wide open as a default.
Jim Davis


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