OK, I have a weird question on the same topic.
I took a trip across the Ocean. I have a GPS Adaptor attached to my camera and it updates the time zones automatically. I was unaware of this and I manually adjusted my camera clock. To farther complicate the problem the first couple of pictures that I took were inside our hotel and I did not receive GPS Signal. That said, my camera thought I was shooting at the correct time but in the wrong time zone. I soon went outside and everything corrected itself.
So, I added GPS information for those few pictures that weren't GEO-Tagged. Great. My problem is that when I import them into Photos for Mac, while they show the correct location when I right click and select Get Info, they show the wrong time zone when I go under Image --> Adjust Date and Time.
I shoot in Raw and I have two copies of each of my pictures, a CR2 File that is my original, and a JPEG that is my final version for presentation. I want to change the timezone of my CR2 File but you can not export to CR2 in the Photos App.
I have an EXIF Editor app and I can see the GPS Information but there is no location of a timezone. I did some research and apparently Timezone Information, or a UTC Offset is not standard EXIF data.
My question is: 1. Where is the Photos App getting the timezone information from? Why is the timezone different than the GPS Location?
2. Has anyone figured out a way to export a RAW file as a modified RAW File? Note that I am only modifying metadata and not the image itself.