Re: Time Zone.

[Pat Suwalski <pat suwalski net>]

Nyall wrote:
> > > But it is not clear to me yet, how f-spot is currently determining the
> > > UTC time or timezone the picture was taken at.
> > And this is the problem. It doesn't, but it shifts all of the photos 
> > relative to the importing computer's distance from UTC.
>
> So to get the date/time in f-spot to match the time the event was taken,
> I need to set (and leave) my camera at UTC time? (No big deal if so)

Nope. As soon as you import into your computer, it will be offset by 
(-1)(UTCOffset) on your computer. So, that's why in the original eMail I 
said my workaround was to run f-spot itself in the UTC timezone.

> What about when you change the date/time within f-spot? Should I first
> change my PCs timezone to UTC, then do the changes? Or should I leave my
> PCs settings in the local zone, and calculate the UTC time for the
> photo, and use that in the f-spot dialog? 

Neither of those will work. When I felt the need to unmangle the 
timezone alterations by f-spot, I deleted the f-spot database, wrote a 
shell script that used exiftime to copy one of the original dates back 
to where it belongs, and then reimported into f-spot with TZ=UTC.

Now you see why f-spot should not be handling timezones? There are a 
million scenarios to handle. Without timezone handling, f-spot could 
just show the date as it appears in the photo and save a lot of headache.

--Pat