On Thu, 16 Nov 2000 11:52:20 +0900, "Jim Davis" <[EMAIL PROTECTED]>
wrote:
>> 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.
Ah, but that is my point - wide open should show the LEAST depth of
field, yet the viewfinder to me looks like it is at f16 all the time
in terms of DOF.
--
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