The camera snaps when a combination of sensor noise and light leak reaches exposure
threshold. If your time varies depending on the amount of ambient light (out in the
room
or in a changing bag), then the major factor was light leak, if not then it's sensor
noise. Since the electronics is acting on perceived light, even if it's noise, the ISO
setting _should_ therefore determine the maximum shutter time. The spec is for 125 sec
at
ISO 100, f/1.2. With no image (black) the shutter would have to trip several stops
below
this, say 8 or so minutes to give accurate metered shutter control.
Regards,
Bob...
-------------------------------
"In the carboniferous epoch
we were promised perpetual peace.
They swore if we gave up our weapons
that the wars of the tribes would cease.
But when we disarmed they sold us,
and delivered us, bound, to our foe.
And the gods of the copybook headings said,
'Stick to the devil you know.' "
--Rudyard Kipling
----- Original Message -----
From: "Aaron Reynolds" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, June 11, 2001 12:13 PM
Subject: Re: LX Metering
>
>
> Michel Adam wrote:
>
> > Should not make any difference. In total darkness, the reflectivity of the
> > pressure plate vs the film should be the same (zilch).
>
> True...so maybe we're seeing the difference between total darkness and
>mostly-darkness?
>
> Maybe the camera's "smart" enough to give up after a couple of minutes
> if it isn't getting any exposure?
>
> -Aaron
> -
> This message is from the Pentax-Discuss Mail List. To unsubscribe,
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-
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