What you are observing is the built-in warning that the meter has been set
outside the range that it is capable of working. This changes as the ASA is
changed and the boundaries you mentioned sound about right.
Although not the same camera, the Spotmatic and Spotmatic II have the same
feature; in those cameras, the range of measurement is as follows:
http://whitemetal.com/pentax/SPII_range_of_light_measurement.htm
A quick check of this chart actually confirms exactly what you described.
When the shutter speed/ASA combination are set outside the limits shown on
the chart, the needle deflects to indicate this fact. So it sounds like
your camera is working right.
ppro
http://whitemetal.com/pentax/index.htm
-----Original Message-----
From: Mark Roberts [mailto:[EMAIL PROTECTED]]
Sent: Friday, March 09, 2001 4:06 PM
To: [EMAIL PROTECTED]
Subject: Re: K1000 light meter issues.
[EMAIL PROTECTED] wrote:
> It appears that i am unable to use the light meter at shutter speeds
>longer than about 1/100th of the ASA. Example-- at ASA 200, the light meter
>jumps(fast) to positive when the shutter is set at 1 second. Similarly, the
>meter jumps positive at 1/15 sec with ASA 3200. I am assuming this is a
>problem with the film and shutter speed being on the same knob, and why
most
>of the other "K" models had the film speed being set alongside the rewind
>knob.
Well, this has nothing to do with the film speed and and shutter
speed being on the same knob, at least, not with respect to
making a problem of this type more *likely*. Separating the two
functions would change the *symptoms* of such a failure but not
the liklihood of its happening. (Come to think of it, moving the
film and shutter speed adjustments to separate locations would
necessitate the use of two different potentiometers and would
theoretically make this kind of thing *twice* as likely...)
Anyway, it sounds like you have a bad spot (possibly just dirt)
on the potentiometer in the shutter/film speed adjustment.
A cleaning would likely take care of it, but there's a slight
chance that the potentiometer might need replacement.
Mark
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