Re: Intermittent LX metering error

2004-02-26 Thread ernreed2
Shel asked:
> Does this happen when a particular shutter speed is
> selected, or when the camera is used on automatic? 

Used on automatic.

>  Or with
> a particular speed when used on automatic? Does it happen
> when a particular aperture is used, or with any aperture?

This one's tougher, but, considering the wide range of lighting situations in 
which it's happened, I shouldn't think it's the same shutter speed. Harder to 
know that about the aperture but again I suspect NOT, for the same reason.
 
> How old is the camera?  Have you checked/replaced batteries
> recently?

Purchased used about four-and-a-half years ago (so I don't know its real age); 
and No. I'll get some new batteries today.

ERN



Re: Intermittent LX metering error

2004-02-26 Thread Peter J. Alling
What speed film are you using?

[EMAIL PROTECTED] wrote:

Anybody have an idea as to why my LX should produce the occasional, severely 
underexposed frame (like no more than once per roll of film)? It does this in 
quite unchallenging light conditions, with perfect exposures to either side of 
the affected frame, and this has now happened with a variety of different 
lenses. Been going on a while, too. At first I thought it was some error of 
mine, but the circumstances just don't support that theory any more.

Really hoping one of the LX gurus has a thought on this.

ERN

 





Re: Intermittent LX metering error

2004-02-26 Thread Shel Belinkoff
Hi Peter ...

How might film speed affect the problem?

"Peter J. Alling" wrote:
> 
> What speed film are you using?
> 
> [EMAIL PROTECTED] wrote:
> 
> >Anybody have an idea as to why my LX should produce the occasional, severely
> >underexposed frame



Re: Intermittent LX metering error

2004-02-26 Thread mike wilson
It _could_ be the ISO resistor.

m

Shel Belinkoff wrote:
> 
> Hi Peter ...
> 
> How might film speed affect the problem?
> 
> "Peter J. Alling" wrote:
> >
> > What speed film are you using?
> >
> > [EMAIL PROTECTED] wrote:
> >
> > >Anybody have an idea as to why my LX should produce the occasional, severely
> > >underexposed frame



Re: Intermittent LX metering error

2004-02-26 Thread Shel Belinkoff
Ahhh, that's the thing I was trying to remember.  Darn all
these technical thingies and terms. ;-))

mike wilson wrote:
> 
> It _could_ be the ISO resistor.
> 
> m
> 
> Shel Belinkoff wrote:
> >
> > Hi Peter ...
> >
> > How might film speed affect the problem?



Re: Intermittent LX metering error

2004-02-26 Thread mike wilson
M.  Beastly, beastly things.

Shel Belinkoff wrote:
> 
> Ahhh, that's the thing I was trying to remember.  Darn all
> these technical thingies and terms. ;-))
> 
> mike wilson wrote:
> >
> > It _could_ be the ISO resistor.
> >
> > m
> >
> > Shel Belinkoff wrote:
> > >
> > > Hi Peter ...
> > >
> > > How might film speed affect the problem?



Re: Intermittent LX metering error

2004-02-26 Thread Bob W
Hi,

this was one of the symptoms of sticky mirror that I experienced
before the syndrome became really severe.

-- 
Cheers,
 Bob


Thursday, February 26, 2004, 2:31:37 PM, ernreed2 wrote:

> Anybody have an idea as to why my LX should produce the occasional, severely 
> underexposed frame (like no more than once per roll of film)? It does this in 
> quite unchallenging light conditions, with perfect exposures to either side of 
> the affected frame, and this has now happened with a variety of different 
> lenses. Been going on a while, too. At first I thought it was some error of 
> mine, but the circumstances just don't support that theory any more.

> Really hoping one of the LX gurus has a thought on this.

> ERN



Re: Intermittent LX metering error

2004-02-26 Thread ernreed2
Peter asked:
> What speed film are you using?

Seen it happen with both 400 and 800.



Re: Intermittent LX metering error

2004-02-26 Thread William Robb

- Original Message - 
From: <[EMAIL PROTECTED]>

Subject: Intermittent LX metering error


> Anybody have an idea as to why my LX should produce the occasional,
severely
> underexposed frame (like no more than once per roll of film)? It
does this in
> quite unchallenging light conditions, with perfect exposures to
either side of
> the affected frame, and this has now happened with a variety of
different
> lenses. Been going on a while, too. At first I thought it was some
error of
> mine, but the circumstances just don't support that theory any
more.
>
> Really hoping one of the LX gurus has a thought on this.
>
> ERN

Its the ISO resistor. They are rather prone to corrossion.
A temporary fix can be had by turning the ISO dial from lock to lock
a couple of dozen times.
Were I you, I would get the thing in for service while Pentax is
still servicing it.
According to Pål Jensen, the new resistors are made of gold wire
rather than copper wire, and are less prone to this problem.
I had all three of my LX's done a couple of years ago.
I am pretty sure that one of them displayed the problem after the
fix, so i'm not sure if it is really a permanently repairable problem
or not.
It will show up on automatic most obviously, since the exposure goes
all wonky, but I have noticed what I think is a symtom when shooting
metered manual, with the occasisonal exposure reading that just
doesn't make any sense.

William Robb




Re: Intermittent LX metering error

2004-02-26 Thread William Robb

- Original Message - 
From: "William Robb"

Subject: Re: Intermittent LX metering error


>
> - Original Message - 
> From: <[EMAIL PROTECTED]>
>
> Subject: Intermittent LX metering error
>
>
> > Anybody have an idea as to why my LX should produce the
occasional,
> severely
> > underexposed frame

> Its the ISO resistor.

As Bob W sez, it may also be early sticky mirror.

William Robb




Re: Intermittent LX metering error

2004-02-26 Thread ernreed2
Thanks, all. I guess I'll be looking into repair possibilities.

ERN



Re: Intermittent LX metering error

2004-02-26 Thread David Mann
On Feb 27, 2004, at 10:38, William Robb wrote:

I have noticed what I think is a symtom when shooting
metered manual, with the occasisonal exposure reading that just
doesn't make any sense.
I have noticed this on my LX, but in my case the problem is quite mild. 
 It only happens occasionally, and I can "fix" it by just wiggling the 
ISO dial a little.

It is pretty obvious when it occurs: the meter indicates 1/2000 when I 
know intuitively that it should be something more like 1/125 or 1/250.

Cheers,

- Dave

http://www.digistar.com/~dmann/



Re: Intermittent LX metering error

2004-02-26 Thread Peter J. Alling
William Robb noticed a while ago that when using faster film, say 3200 
or 800 with 2 stops of over exposure
the meter automatic metering system in the LX will sometimes give 
extreme underexposure.  I did a bit of experimenting
and noticed the same behavior.  When you would expect a seconds long 
exposure sometimes it will be much shorter. 

Shel Belinkoff wrote:

Hi Peter ...

How might film speed affect the problem?

"Peter J. Alling" wrote:
 

What speed film are you using?

[EMAIL PROTECTED] wrote:

   

Anybody have an idea as to why my LX should produce the occasional, severely
underexposed frame
 



 





Re: Intermittent LX metering error

2004-02-26 Thread Peter J. Alling
It's probably not the problem I suspected.  My LX's will occasionally 
under expose on long
exposures with 1600 and 3200 speed film.  We had this discussion a few 
months ago. 

[EMAIL PROTECTED] wrote:

Peter asked:
 

What speed film are you using?
   

Seen it happen with both 400 and 800.