If you are like me you often take a photo of something so that you have the information handy and can then make some notes. Perhaps it is a poster, business card, some notes or other text. Now in iOS 15 and iPadOS 15 you can actually copy the text directly from any of your photographs and paste them into wherever you can add text like Notes, Word, Pages, Excel, an email, you get the idea. You can even copy that email address and add it to an email, a website address copied into Safari.
This is something I have been using all the time, I not only find it useful but it saves me time too, and also reduces errors, you know those typos when transferring something you are typing out.
If you want to see how it works check out this video I made for you.