Thanks, now I understand. The shutter speed readings before and after must
be the same.
The problem is that I do not own, never have used an OM 4, much less a 4T.
That is still in my dreams. I am just struggling with the idea of selling of
one of my prime fast lenses (either the 21/2 or my 28 /2 to buy a 4T. I now
own an OM 40, OM 10 and an OM 2. I will sell my OM 10 soon. Do you think its
a good idea?
----- Original Message -----
From: C.H.Ling <chling@xxxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Monday, May 07, 2001 12:15 PM
Subject: Re: [OM] shutter speed accuracy
> 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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