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How/why to adjust date/time

Usually you would only adjust date/time when your camera's clock was off because of daylight savings time or you forgot to set its time at all. In this case, simply all those pictures, choose "Shift time..." from the context menu and adjust as necessary.

This feature is especially useful when you have lots of pictures taken at one event by different cameras. Usually some of them forgot to (un)set daylight savings time, others clocks are off by some minutes. Because of those inaccurate timestamps you can't simply put all of them into one group, use "Order chronologically" from the group's context menu to have all of them ordered chronologically. That's too bad, because it would be easy to sort out which ones to keep/delete this way.

So you have to determine how to timeshift all the pics taken by each of the cameras. The easiest way would be to make every photographer take a photo of one (digital) clock sometime at that event -- you could just timeshift those camera's photos by the difference between the clocks display and the time reported for that picture.
However, you forget or did not do that.

Here comes the solution: create a group for each camera's photos:

                 Some Party
                 + Camera A
                 | + img0001.jpg
                 | + img0002.jpg
                 | + img0003.jpg
                 | + img0004.jpg
                 + Camera B
                 | + img000A.jpg
                 | + img000B.jpg
                 | + img000C.jpg
                 + Camera D
                 | + pic0015.jpg
                 | + pic0016.jpg
                 | + pic0017.jpg
           
Create another group where you link all those photos into. Now you can easily timeshift all pics of one camera in their group and use "Order chronologically" in the group where all of them are linked into.


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