OK I tested the meter on a blank wall and it does
meter one stop slower compare to my Pentax MX , I can
get a screen 1-1 for free from the same source so what
will be the best thing to do either leave the exposure
compansation on +1 all the time or to replace it with
the 1-1 screen , For a Zuiko 200mm f4.0 lens in the
shop the diffrent in brightness is well noticed and it
is important to me.
Dan
UK
--- dreammoose <dreammoose@xxxxxxxxx> wrote: > This
is only a problem in the viewfinder and in
> manual mode. The Om-2(n)
> has 2 separate metering curcuits. The one you see in
> the viewfinder and
> use for manual mode reads the brightness of the
> image on the focusing
> screen and will indicate an exposure that is at
> least 1 stop too low.
> In Auto mode, the OM-2 will still expose correctly
> using the OTF
> metering curcuit which reads light reflected from
> the first shutter
> curtain and the film and is unaffected by the
> focusing screen. Since the
> Auto OTF mode is aperture preferred, this means the
> actual shutter speed
> will be one setting slower than indicated in the
> viewfinder. i.e., if
> the viewfinder indicates 1/500, the actual exposure
> will be more like 1/250
>
> If the camera came with the Beattie screen, it was
> presumeably was used
> with this screen by the previous owner(s) and it is
> possible that the
> meter has already been adjusted to read correctly
> with the Beattie
> screen. It is possible to compare the viewfinder
> reading of a blank,
> evenly illuminated wall with hte reading of a meter
> know to be accurate.
> However, as this is an old camera, although new to
> you, you should test
> out both exposure systems. Slide film is best for
> exposure system
> testing both because it is omre sensitive to correct
> exposure and
> because the automated printing of negative film will
> mask the
> differences. Take some series of test pictures on a
> test roll. For each
> series::
> 1. Using Auto mode
> 2. Using manual mode at the same aperture and at the
> shutter speed shown
> in the viewfinder on auto mode.
> 3. Using manual mode and one shutter speed slower
> than the viewfiner
> meter recommends.
> 4. Since you are trying out a new camera, it
> wouldn't be a bad idea to
> bracket both another stop below and one stop above
> the viewfinder
> recommendation.
>
> Try this on at least a couple of differently lit
> scenes and keep careful
> notes. The resultant slides will tell you everything
> you need to know
> about the accuracy of both exposure systems and
> whether they agree with
> each other.
>
> Moose
>
> tom wagner wrote:
>
> > The Beattie Intenscreen will cause an
> under-exposure of 1 stop... so
> > yes the meter would have to be re-calibrated
> >
> > Danny Hecht <dannyhecht@xxxxxxxxx> wrote:
> >
> >> Hi I am new to this mailing list and I have a
> question:I got OM-2
> >> that have a non original focusing screen , It
> >> is the beattie interscreen , It is giving a nice
> view
> >> in the finder but do one need to compansate his
> >> exposure when using this screen or should I count
> on
> >> what the meter give me ?
> >
>
>
>
> < This message was delivered via the Olympus Mailing
> List >
> < For questions,
> mailto:owner-olympus@xxxxxxxxxxxxxxx >
> < Web Page:
> http://Zuiko.sls.bc.ca/swright/olympuslist.html >
>
__________________________________________________
Do You Yahoo!?
Everything you'll ever need on one web page
from News and Sport to Email and Music Charts
http://uk.my.yahoo.com
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|