Time zones are very bad news — even if you don’t consider DST, much less states like Arizona that sometimes track California and sometimes Colorado. Now combine multiple cameras with varying approaches to time zone, then Aperture’s splitting of time adjust into Time Zone assignment set in Metadata Batch Update and Time offset configured in Adjust Date/Time, now Aperture’s assignment of time zone on import, now the computer’s time and time zone…
Here’s what I do …
When taking pictures
- Do my best to get all cameras and devices at correct time zone/time insofar as camera supports that. (Some always leave camera on UTC the adjust in Aperture as needed. I might switch to that.)
- Take pictures of my iPhone clock periodically.
- Mix in iPhone photos because those get GeoTagged and should have reference time.
- Tag my iPhone pictures (Aperture Label) so they’re easy to spot, they have reference time and location. I copy their metadata location and paste it into nearby non-tagged images.
- Using iPhone image time zone as reference, I select all images from a particular camera, take note of their metadata time zone, then change the time zone to match iPhone. I do this sequentially for each camera.
- I then use iPhone image reference times to select images for a camera, then offset as needed.
- Repeat for each camera
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