Can you separate "pictures made with iPhone" easily from "pictures made with camera?"

Here's a picture made with an iPhone, with its info window:

The camera model is noted (iPhone 4s!)

You can use a Smart Album to select pictures by camera model, like this:

You can fill the model field with a camera that it detects, like iPhone 4s or, if you truncate that to iPhone, you get all iPhone models. These might be from other people, of course.

Here's another Smart Album,

which returns pictures from my Z 5 and my Z 8, but excludes other Nikon models.

Does this work for you?

Paul Harts wrote: … I would simply reverse the search because I would like to filter out all pictures made with an iPhone.

Yes, "does not include" is a choice for the Smart Album.

You can also use And or Or (but not a combination.) So you can use

This is a pretty useless example of And, but

and so on. Very very useful!

As you can see, it's really match all criteria, or any of the criteria.

I don't know if there is an automated way to do it but the meta-data in the photos should state the camera make, so you might be able to separate the pics by searching for Nikon and iPhone and then putting them in separate albums.