Why is my 0.5 camera mode gone?

I have done the new iOS update on my iPhone 13 Pro Max, but when I go to my camera and try to take a 0.5 photo, it does not allow me to, but it shows me the 0.5 option for about a millisecond and then it will disappear so I just think that Apple should bring back the 0.5 option because it is a very useful mode.