Bulk EXIF edits - is there any free n easy tool?

Is there any tool to bulk EXIF edit some RAW files?

I have basically two issues:

1.) On a trip to a different time zone (obviously quite a while ago) I didn’t change the camera time. That means images taken do not line up nice in my photo software timeline (Synology Moments)

2.) Some pix taken with manual lens lack lens name EXIF (not a major issue)

I would not want to modify my raw files. but exiftool/exiv2(the cmdline tool) or so might be able to do it.

I have Filmulator ask for local timezone and camera timezone on import so it orders things correctly in its timeline.

As a result, I can leave my camera time zone alone.

It doesn’t change the raw files, however.

exiftool can. For the wrong timestamps it’s actually rather easy, it effects all images from-to a certain date.

On Windows I can add +5 hours that with:

exiftool “-DateTimeOriginal+=0:0:0 5:0:0” -r folder

That worked for me on JPG, ARW, and partly on X3F. Here the time stamp was changed +5, but the file time was changed to ‘now’. JPG, ARW kept the old time. Not a big issue, in Moments I store only JPG files.

I followed this page (with the latest Exiftool):
https://medium.com/@geneparcellano/batch-adjust-exif-time-stamp-using-exiftool-on-mac-a970a67dae2f

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