first person camera

Yes, this is possible as we often see this happening in various areas of the rooms throughout the game. 

Essentially I believe there are 2 types of cameras that are for over the shoulder... (this being said there are several other types that exist that follow the player around, but with varying options). For over the should cameras, lets look at the different types:

• 1 - a default value that is used when no CAM entry is present that is controlling the values. This value may reside in the player.udas in the FCV files. 
• the 24 entry type 23 that are used when entering a triggerzone. This value will override any default values.

For an example of the type 23, look at the first entry in the CAM file of r101. The triggerzone for this is on one of the roofs of the shacks. When a player enters this area the camera angle changes pointing downward to give the player a better view of what is happening below on the ground. There are other examples of this throughout the game where the camera is pointed outward, downward , or perhaps with other adjustments like the FOV. 

There is a new 3dsMax script that was written by user MarioKart64n that allows us to edit the CAM file. We can edit existing entries, and even create new ones. We tested it out quite a bit and it seems to work well with all its counterparts, including the LIT file. I will be preparing a tutorial this week to explain it's use for others. I believe there is a version of the script for both RE4UHD and the 2007 version of the game.