May be I have used the wrong word? I mean the reading on the display
before and after pressing the shutter release should be the same. The
reading after pressing the shutter is the speed measured and lock
(memorized) by the camera computer.
C.H.Ling
Clemente Colayco wrote:
>
> Hi CH
>
> Thanks for your brief explanation. What do you mean by the words: "conceded
> reading"?
>
> Regards
>
> Titoy
>
> ----- Original Message -----
> From: C.H.Ling <chling@xxxxxxxxxxxx>
> To: <olympus@xxxxxxxxxxxxxxx>
> Sent: Monday, May 07, 2001 9:08 AM
> Subject: Re: [OM] shutter speed accuracy
>
> > Here I had referred to the "Auto exposure speed", it is hard to
> > measure without a professional equipment, you can do it with slide but
> > not easy to judge. On the other hand for the 4 and 4Ti, there is a way
> > to check the autoexposure without any external equipment, but you have
> > to assume the displayed shutter speed is accurately associated with
> > true shutter speed:
> >
> > 1. put a piece of film (or the checking sheet come with the OM4Ti) to
> > the camera for providing proper reflection.
> > 1. set the camera to auto mode, focus at a plain wall.
> > 2. note the shutter speed display inside the finder.
> > 3. turn on memory mode.
> > 4. fire the shutter.
> > 5. check the display speed again.
> >
> > The good one will have conceded reading, like my trusty OM4, I still
> > have a 4Ti with different readings below 1/60s and a 2sp behave the
> > same (I can HEAR it below 1/8s). Also, the speed is not linear, error
> > increase when speed going down. But they works fine in manual and spot
> > mode.
> >
> > For manual shutter speed it is easier to check, you can see:
> >
> > http://www.glink.net.hk/~olympus/shutt.htm
> >
> > C.H.Ling
> >
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