Indexing ajax generated images

Hi all hope you're doing good

Today i had to look for a way that would help me index images that are fetched by ajax, so i started Googling and found some information about infinite scroll and how Google would like you to handle it, but i do not think this would help me so let me explain exactly what is the problem and what i have so far regarding a solution.

The Problem
At the moment i have a page where users can view images of a business but to reduce the loading time i have limited the amount of images displayed to 5, this is user uploaded images so they can get a lot and displaying them all will just kill loading time and use pointless bandwidth, so if you would like to view more images there is a "show more" button which will get all the remaining images for that business.

As you can imagine our friend Google does not have the ability to run all the click events and index the content that will be returned.

What i'm thinking of and trying to work out
Google's suggestion for the infinite scrolling is to create paginated pages which Google indexes, so lets say you have 3 pages, Google will index all three and how you need to handle this is to take all three pages as a position of the entire infinite scroll, this way allowing the user to get the content he actually searched for on Google and not having to scroll through miles of content just to miss the content he was looking for.

So now you have 3 pages and your on page two, and if you want page ones content you need to scroll up and as you enter the first page's content you change the URL to the first pages URL (without actually reloading that page just changing it's URL) and the same if your going down to the third page.

Okay that was for the people who did not understand the explanation Google has on it's webmaster help section

Now i don't see this working for the images i have because i can't change the URL just to index images so i thought of making that show more button a link which Google can follow and index all the images fetched for that business, then canonical back to the business page, and just prevent the link from working with jQuery and the user will not see it the same as Google.

But my problem i have with that is that Google will still index that page with all the images because canonical is more of a suggestion not a sure thing to work.

If anyone has a suggestion on how to handle this i would be really thankful, if you have more questions just ask

I really hope i have explained everything correctly and could help you understand my problem, thank you for reading i know it's long but better that and you understand what i need then giving you not enough information.

Thanks again