Cannot adjust Photos slideshow timing in external library on Mac Mini 4

I'm not sure what you mean by "slideshow." If File>Create Slideshow, the result is supposed to be a cute little movie that you have not control over-- is that what you're using?

If so, then you should instead make your slideshow as a Project--File>Create>Slideshow>Photos.

There, you have much more control

You can set timing, transitions, etc. The + at the bottom right is to add more pictures or to add text to pictures.

Also, be sure your external drive is formatted in APFS or or Mac OS Extended (Journaled) format. The drive must be connected directly to the Mac by cable, not networked, clouded, NASed, etc. Improperly formatted drives can corrupt the Photos Library.

After you create the slideshow by selecting the Photos to be in the slideshow and right clicking on one and under Create ➙ Slideshow pick Photos

click on the project at the bottom of the library's sidebar.

Then click on the stopwatch at the far right of the window:

The icons at the right of the project window control the options you have in setting up the sideshow:

RAW-22 wrote: …From Photos > File I selected "Play Slideshow" (attached image)…

Really, you're not going to get any satisfaction from "Play Slideshow." We were talking about using:

File>Create>Slideshow>Photos

That gives you lots of control. See my earlier post for a picture showing the controls

I'm not sure what "create file for a slide show." Photos doesn't deal in Files, except in exporting. If you like, see this:

Basic Concepts and Terms About Photos - Apple Community

The available options for the timing will depend on the number of photos in the slideshow, the theme, and the selected music.

If you select "fit to music" you cannot control the duration for the individual slides.

Hello, I am new to the Community - I hope that Richard and Leonie can see my reply.

Here are steps that I took:

I opened my photos library on the external drive and selected multiple photos.

From Photos > File I selected "Play Slideshow" (attached image)

The slideshow starts (attached image), but I cannot see any function that would allow me to adjust time intervals between photos of the slideshow.

Attached images: one showing options under Photos menu and one during the slideshow playing.

I understand that I could create file for a slide show, but it is cumbersome to create and manage slideshow files from many different sets of photos that I want to show to different friends.

It would be great to have an option to adjust time intervals between photos during the quick slideshow.

After posting my reply I see one photo.

Here is the second photo.

Thank you for your reply!

All my questions are resolved.

I appreciate all replies that I received addressing my original post.

RAW-22 wrote:

Thank you for your reply!

All my questions are resolved.

I appreciate all replies that I received addressing my original post.

👍