On Saturday, October 15, 2011 7:08 AM, "John Sessoms"
<[email protected]> wrote:
> 
> However long your exposure is you have an equal length duplicate while 
> the camera makes the dark frame exposure with the shutter closed. A 5 
> minute exposure followed by a 5 minute dark frame.
> 
> Meanwhile the stars have moved. Instead of trails you get dotted lines.
> 
> You can turn it off on the K10D and the K5, but not the K20D & K7 (and I 
> think K200D & K-x).


Don't know about the K-x, but you can turn it off with the 200D (and the
*istDS).


Cheers

Brian

++++++++++++++++++++++++++++++++++
Brian Walters
Western Sydney Australia
http://lyons-ryan.org/southernlight/
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