Some years ago I had a OM2sp have exactly the same problem as yours (it was
sold), also my black OM4Ti have similar problem (but to a less extend) now I
use it at spot mode. On the other hand I have another OM2sp that works
perfectly. This problem had brought up by some Mailing List member before. I
think there must be a capacitor or something on the circuit that failed. But
the OM service center didn't know how to fix it.
C.H.Ling
-----Original Message-----
From: Wayne Harridge <wayneharridge@xxxxxxxxxxxxxxx>
To: olympus@xxxxxxxxxxxxxxx <olympus@xxxxxxxxxxxxxxx>
Date: Friday, September 22, 2000 5:41 PM
Subject: [OM] Night exposures with OM-2SP - warning long message, but ON
topic
>Dear Zs & Zs,
>
>Last week I took some night time exposures with my recently acquired
OM-2SP.
>When I got the transparencies back (Kodak Elite 100) the exposures were
>right off, over exposed. At the time I was taking the shots I thought the
>shutter was staying open too long in comparison with what I had experienced
>under similar lighting conditions with my OM-2N. All other transparencies
>where the exposure was shorter than 1 sec seemed to be accurately exposed.
>I thought I would investigate and compare the behaviour of the 2 bodies, so
>I set each one up in turn as follows:
>
>Mounted on tripod
>A short piece of unexposed film in the film gate
>ISO dial set to 100 with no compensation
>50mm f1.4 lens with 4x ND and polarizing filter (to reduce the amount of
>light and force a long exposure)
>Normal room lighting with lens pointing at a blank wall
>
>I then exposed a number of shots at different apertures with the following
>results:
>
>Aperture OM-2SP OM-2N
>
>f1.4 6 sec 3 sec
>f2 8 sec 4 sec
>f2.8 21 sec 7 sec
>f4 114 sec 14 sec
>f5.6 128 sec 28 sec
>f8 128 sec 55 sec
>f11 - 100 sec
>f16 - 183 sec
>
>Note:
>
>1. Exposure times are average of at least 3 exposures timed with stop
watch.
>
>2. From f2 to f11 with OM-2N exposure times almost exactly double with
>aperture as expected.
>
>3. From f1.4 to f2 looks like the lens is not letting though 2x the light
at
>f1.4 as at f2 !
>
>4. OM-2SP exposures are all wrong, 128 secs is probably the limit to long
>exposures (OM-2N is around 225 secs from previous experience).
>
>Anyone else like to try the same experiment with their OM-2SP ? I would be
>interested to find out if it is my particular body or "normal" behaviour
for
>this model.
>
>Wayne Harridge
>Ivanhoe, Victoria, Australia
< 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 >
|