Subjectivity is an ability, the capacity to use a new inner mode of presenting the fact that you currently know something to yourself.
Thomas MetzingerI believe that if we would carefully apply the distinction between transparency and opacity to the different layers of the human self-model, looking at self-consciousness in a much more careful and fine-grained manner, then we might also arrive at a new answer to your original question: What a "first-person perspective" really is.
Thomas MetzingerSubjective time flows forward, the phenomenal self is embedded into this flow, an inner history unfolds. That it is why it is not a bubble, but a tunnel: There is movement in time.
Thomas Metzinger