----- Original Message ----- 
From: "Gasha"
Subject: Pentax 6x7 and loooong exposures


> Hi all,
>
> Last night we finally got snow here in Europe. Not much, but at least
> some photo oportunities.
>
> Used my Pentax 6x7 MLU for one 4 minute long exposure. Battery started
> to weak because of cold weather, so i decided to shoot something with
> K100D and go sleep :)
>
> Question: Anyone knows about modification to Pentax 6x7 (i have MLU
> version), that astro photographers are using? To be able to shoot
> B-exposures without battery usage.
>
> Can i modify camera without sending to Pentax service?

You have to use an external battery. There is no modification that will allow a 
Pentax 6x7 to 
work without a battery.
Fortunately, it isn't terribly expensive:
http://www.bhphotovideo.com/c/product/40852-REG/Pentax_37990_Remote_Battery_Cord_for.html

William Robb 


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