i just went over my helmet collection looking for something to match my recently unlocked achiles armor and when i came to pilot i noticed something strange like some lights and a structure in the reflection, what is it? if you want to see this for yourself equip pilot gen 1 with a white visor or the dynasty visor.
If you are referring to what I think you are referring to then, what you are seeing are stock photos of 343i’s offices. In order to create the reflection effect they have to use a base image, and I guess one of their FX artists took some stock photos around the office and used those as the basis for his/her reflection trick. They use a random stock photo because the Spartan isn’t actually in a an environment for the visor to reflect from.