Iphone 13 pro, HDR cannot share what I see

i have posted a quote from another question which describes

my issue perfectly. I did not take my phone to an apple store. The camera documentation states that it takes every picture in HDR for this camera. I dont understand why apple would do this. I imagine it has something to do with the format they use to save the blended picture. It is incredibly frustrating and causes me to not like my phone, I could have bought a different cheep phone and spent the real money on a traditional camera. I thought it was capable of taking so much better photos. If you cant share them what is the point?

O am hoping that ape has an app or something to save Or export the blended HDR photos.

“I took some pictures recently in the park with HDR turned on. There were some flowers on the ground, the Sun was shining on the back side of the flower, and a branch on the floor was very shiny silver color. I noticed a setting under Photos, called "View Full HDR". When it's turned on, the picture looks really nice with the Sun shining on the flowers and the branch, but if I turn off that setting, it's kind of pale grey, no shininess. I tried sharing that picture anywhere with the HDR on, sending to Dropbox, OneDrive, sending as an iMessage, etc, I even took a screenshot of the screen, but none of them looked like the picture with HDR turned on, it just looks as a picture without HDR.

So I don't see the point for the phone having HDR feature if you cannot share it with anyone, you can just look at it yourself ony through the Photos app of the phone.

I had a ticket about this with Apple support. I wasn't able to show it to phone support, because as long as they connect with their remote software, it wouldn't show the picture in HDR mode. They also tried connecting from my MacBook Pro using QuickTime to my phone screen, and the same thing happens, it is turning off, it only shows as plain picture without HDR.

I went to the Apple Store and showed it to Genius Bar in person, and they saw the difference when "View Full HDR" is turned on and off, it's a huge difference, very obvious. Their explanation was that the computer sceen has different resolution than the iPhone 12 screen, and that's why when you transfer to computer is not showing the same. I don't agree with that. From the resolution difference you would see the picture a little more blurry on a screen with less resolution, since it would repeat or average out some pixles, but it would not change the colors. And my laptop is a MacBook Pro M1 chip with resolution of 2560 x 1600, it's not small, I wouldn't expect to make a big difference. And in terms of colors, I think it can show millions of colors.

Can anyone else confirm if they have the same issue on an iPhone 12 Pro?

To see the difference between an HDR and non-HDR photo it's a little tricky, you need to take a picture of a scene where half of the scene is dark and the other half is very bright, so in HDR it would lighten up the darker side, but without HDR it would remain dark, it would have more contrast without HDR. Try to take a photo of a scene like that, same position with and without HDR.