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PD 170 ND filters / focus issue

Posted by gavf on 12/18/05 21:34

Hello Folks
>
> Has anyone experienced the following issue - if so do you have any answers
/
> get arounds.
>
> Using a PD170 (or 150) and it calls for the ND 1 or ND2 filter to be used,
I
> have found on a couple of occassions that having these filters dialled in
> seems to have a bad affect on the focussing - in that it can become very
> difficult to get the subject in focus - you can travel through the point
of
> focus and it all seems a little 'furry' 'fuzzy' 'murky' - just not right
at
> other times and without the filters dialled in you 'see' the point of
focus
> clearly!
>
> Now I have tried and will continue with glass in front of the lens from
now
> on (ND filters) but would still like to know if anyone knows what is
> happening with the cameras ND filter system??
>
>
> Fire away:!
>
> Gav

 

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