Not 'Sure', but I signed up with Google Photos, and it did exactly what you asked about. - It searched several PC's and laptops, then added every photo on them to the 'Collection'.
(The only thing then, was discovering that I had almost 100GB of photos, and had to buy additional storage,
($12.00 a year for 100GB)
All in all, - I like it and it actually Organizes your photos by Year,& Date, and - - if you have a Google Home Nest, you can ask it to 'Play Photos from say, 2012', and it will act as a Photo Frame, and play that years pics!

I was simply thinking that when we were out shooting together, I might be able to borrow her new wide angle lens, should the occasion arise. If I can remember long enough, I'll check again her nomenclature. I had an old Tamron 28-200 lens that I tried using with my EOS-3 and Elan 7e, and it would never quit focusing. But, I put it on my 1D Mk IV and it worked quite well. Wish I still had it, actually, but it was stolen.

Oh well, I guess I'll safely stay with my own lenses. I am experiencing difficulty using my 28-300 Canon lens with my new (to me) 1Dx. I have to keep turning the camera off, then back on. All my other lenses work just fine.

Only Canon creates lenses using the EF-S mount. These EF-S lenses extend 'deeper' into a Canon cropped-sensor DSLR than an EF lens. If an EF-S lens were able to attach for an full-frame EOS body, the flapping mirror of the DSLR would strike the back of the EF-S lens due to how deep the lens extends into the body. The mirror strike will damage the camera, the lens, or both.

The EF-S mount is identified by a white square rather than the EF red circle. That EF-S mount position of white square on body to white square on lens are used to align and position the lens properly for mounting. There is no alignment position for an EF-S lens to mount to a full-frame EF camera. The only way to mount a Canon EF-S lens to an EF camera is to force (aka break) either the lens or camera body.

Third-party lenses can be designed for specifically cropped-bodies, Tamron has many of them. However, the third-party lenses use the EF mount position; and technically, the DX-style third-party lens can mount to both EF and EF-S style EOS bodies, via the EF mount alignment. The third-party lenses do not extend as deeply into the camera body as Canon's EF-S mount, so there is not the risk of damaging the FF camera. However, the resulting vignette is typically beyond acceptable. Here's a classic example of the result of using a third-party DX-style lens on a full-frame camera.