General discussion about time stamps in photo (video) files.
I know you had a little difficulty with editing time fields a year ago so I consider you an expert on this issue.
Apple appears to be one of the few applications that adjusts the time information when photos are exported. From what I have read over the past few days the time zone issue is poorly implemented and thus needlessly complicated. I am at the point that I will deal with Apple and their ‘adjustment’ of time, with manual editing, and hope other programs do not follow suit.
****3:30pm update on this post, the problem, time being ‘adjusted’ occurred when I created a sharable folder in Photos and not during the exportation of the files. ****
Am I over simplifying or overlooking something regarding the EXIF timestamps?
Thank you, -Fred
We took a three week vacation driving across three time zones. I had a Nikon camera and our iPhones. I would update the time on the Nikon based on the current time. I.e. Yellowstone National Park the lunch lady said it was 12 noon, my Nikon camera would be set to 12 noon. The iPhone would automatically update the time and also be timestamped as 12 noon. At home I wanted to merge the Nikon and iPhone photos. The fun began.
I exported the iPhone files from Photos. I then appended the date and time to the beginning of the iPhone and Nikon file names. The time of the EXPORTED iPhone photos were off by 2 hours, the two hours is the time difference from my home and Yellowstone National Park.
After two days of googling this issue I have determined that there is indeed an EXIF: time zone field but it is very limited in implementation. You have one post dated FEB22 by fluent_retired0v that mentions the issue, His is the ONLY article I read in support of using the timezone field. In his thread you mention EXIF:TimeZoneOffset.
In some abstract way I might be able to imagine a need to complicate the creation time the photo was taken, but when UTC, GMT, daylight saving time not to mention sun spots, rotational lag and geopolitical issues are thrown into the mix it is time for Occam’s razor. A simple time of day based on the sun at the current position is a better approach. If you want to throw in positional data that should be a separate topic.