Prior to 1.15a, it seemed you could look up and down much further in third person mode. This was mostly useful to drop the camera to the ground, at which point it would zoom into you, and when you raised the camera, it would hold that distance without resetting your default camera distance in configuration.
This was really useful in crafting, as it allowed me to get in nice and close to watch that colored light, which I have a hard time seeing from a distance.
When you were done, you could press R3 and it would reset the camera to the preset distance in configuration.
Now, it seems like the 'up and down' angles of the camera have been 'drastically' reduced, which only lets you zoom in so far using that technique. Alternatively, you can use the mouse wheel to zoom in (I try to stay away from the keyboard and mouse, only to chat), but at that point 'End' on the keyboard or R3 on a controller won't reset the camera distance back to the configuration preset.
I'd 'really' like the camera functionality returned. If there is a new 'up/down' camera angle min/max setting I don't know about that I need to change, please let me know.