Re: IR and night photography

["Willem-Jan Markerink" <w.j.markerink@xxxxx>]

On 25 May 99 at 9:32, a5950560 wrote:

> It has been my experience that using a B setting for any 4 hour exposure
> runs the risk of leaving you with drained batteries if you happpen to be
> using any form of electro-mechanical style shutter. The preferred option for
> me, at least, is to use a camera with a T setting when employing long
> shutter times.
> 
> If you do not have a T setting on your camera ( I acknowledge  most modern
> cameras seem to have omitted this useful option) then I suggest that you
> use a fully mechanical camera where battery power is not employed to keep
> the shutter screen open during the 4 hours Joe has recommended.

You might be surprised to learn that several Canon EOS bodies draw 
very little or even *no* current at all in bulb-mode....this applies 
to all early models, and later pro models; an overview of how good 
each camera is can be found on my homepage:

http://www.a1.nl/phomepag/markerink/mainpage.htm 
(or eos_batt.htm as direkt link I believe)

Some Nikon pro models offer the same feature....you can even remove 
the battery pack after the shutter is open, to survive extreme cold.
 
> Sorry to intrude into your discussion. If I was a computer literate person I
> would have tried to respond privately thus being well mannered.  Perhaps you
> can tell me how  I can  respond privately for next time so  do not have to
> write such marginally relevant material for all subscribers to read.

Don't worry, it wasn't that irrelevant (and required a correction as
well!), but a decent mailer should offer you some choices after your
hit the reply button, not just the default 'reply-to-list'.
On some, like Pegasus/WinPmail (the one I use), it requires selecting 
the 'extended reply options' in the preferences menu.

--                 
Bye,

Willem-Jan Markerink


      The desire to understand 
is sometimes far less intelligent than
     the inability to understand


<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]
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