Paramount --
So - I said I was inspired to try a few "Star Trail" shots , after viewing your web site.
I have a rather expensive Sony AR7111 so - no problem. Big Problem. The days of the "B" setting are gone. You can set it on S go past the 25th second mark to their "B" setting. And as long as you hold your finger down, the lens will remain open My Finger would give out after a few minutes - let alone Six hours. I'm still inspired, but disillusioned. I'll work on it. OR just go to your site, and enjoy the fruits of your labors.