Default Naming Convention for Photo File Names

Me too, I would love it if there was an option to change the naming convention, especially something like yyyymmdd_hhmmss.jpg, so that the photos can be easily filed chronologically.

I would love to also see a watermark feature, such as date, time and location added to a photo taken. Very handy when using for work purposes.

> something like yyyymmdd_hhmmss.jpg, so that the photos can be easily filed chronologically

I use GraphicConverter to rename images and movies and to edit metadata before feeding them to Photos. My naming scheme below (if there is no EXIF date, then the file dates can be used instead). AFAIK A Better Finder Rename can do the same. exiftool can do many other tricks such as inserting the camera model to the filename, just check which tag the camera puts to the image metadata and make a command to insert it to the filename (this might needs some learning, though).

exiftool -a -G1 -s 2022-1224-1928-36.jpg 
[IFD0]          Make                            : Canon
[IFD0]          Model                           : Canon EOS R6
[ExifIFD]       LensModel                       : RF50mm F1.8 STM
[XMP-xmp]       CreatorTool                     : Adobe Photoshop Lightroom Classic 12.0.1 (Macintosh)
[XMP-xmpMM]     HistoryParameters               : converted from image/x-canon-cr3 to image/jpeg, saved to new location
[...]

On the iPhone you can only add information to the caption of a phot (on iOS 15 or later). With the name of the iPhone to the caption, when you take a photo. On a Mac you could use a smart album for each iPhone model to collect the the photos taken with this model, but unfortunately Photos iOS does not support smart albums.