Exposure guide for night photography?

Question: Exposure guide for night photography!?

I found this:
http://fotosharp!.com/day_night_exposure_!.!.!.

But I am looking for a free version of this, perhaps software based!. I can't imagine that no one has taken the effort to fit this into a free software application!. Anybody know of one!?Www@QuestionHome@Com

Best Answer - Chosen by Asker:

Not sure about the numbers as I usually use trial-and-error, but there's this:

http://www!.robert-barrett!.com/photo/expo!.!.!.

EDIT:
Adding another link for one that can be downloaded to your favorite HTML and JavaScript capable mobile device (PDA, mobile phone, etc!.):
http://klep!.name/software/ExposureCalcul!.!.!.Www@QuestionHome@Com

Well software takes time to write and most of like to be compensated for the work we do !.!. perhaps most importantly, dragging a computer out into the night to calculate exposures would be rather problematic!.

The value of the information contained within the guide is well worth $20 !.!.!. people spend that in gas on a daily basis !.!.!. or even at fast food restaurants !.!.!.

Thanks for the link !.!.!. I'm going to order one for myself!.Www@QuestionHome@Com

The free version of this would be your own knowledge gained from experimenting on you own with different exposures on the same scenes!. I keep a log and if a I get an effect that that I like I write down- so I can repeat it again!.Www@QuestionHome@Com

I've used the FotoSharp Day & Night Exposure Guide for many years!. Its easy to take with you anywhere you go - much more convenient than a DVD!.Www@QuestionHome@Com

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