2008/9/9 AlunFoto <[EMAIL PROTECTED]>:
> Gang,
>
> I've recently dabbled into night photography with exposure times
> longer that 30s, using the "B" setting. Whenever I lock the shutter
> open, I start worrying about the batteries running out of juice.


> So I have a couple of questions that I hope someone in this
> enlightened forum knows the answer to:
>
> 1. How long exposures can one hope to get from a fully charged battery
> for either K10D or K20D (I own both)?

In my experience with the K10D 3-5 exposures of around 20 min each (in
camera noise reduction disabled on the K10D). The difference in range
is because I use cheap 3rd party spare batteries & they don't seem to
last as long.

I haven't tried any really long exposures with the K20D due to the
fact that you can't turn off NR.

> 2. With the vertical grip attached, will the camera switch from one
> battery to the other during exposure if needed?

Yes.

> 3. Has anyone made a DIY external power source for their camera, or
> have any web pointers?

Not I. But I'm sure someone has. :-)

Dave

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