Concerning the size of the girls, if we compare two or three girls next to each other on a screen by choosing the same resolution (4K for example), is the comparison of the proportions between them (size, width) realistic or there may be differences with what we would see in reality, if they were really in front of us?

In my case, I checked, do not zoom beyond 100% of the original size of the clips.

Concernant la taille des filles, si on compare deux ou trois filles une à côté de l'autre sur un écran en choisissant la même résolution (4K par exemple), est ce que la comparaison des proportions entre elles (grandeur, largeur) est réaliste ou il peut y avoir des différences avec ce que l'on verrait dans la réalité, si elles étaient vraiment devant nous ?

Dans mon cas, j'ai coché, ne pas zoomer au-delà de 100% de la taille originale des clips.

In the Studio, when they set up the Camera for Filming.
they try to use the Same size Framing
so you get a real life representation of one Model to the next.

the Framing for Table clips is different than the Framing for Standing clips.

but with any setup that is taken down, and reset up, differences will happen.
And so some cards are framed different and the model is not proportionately the same.

While Totem owns the Studio
in the Off production time, it is let out for other Photographers and Videographers to use.
So the Equipment is never left setup.

Even a 1cm camera Height Difference will create a different view angle and Focal distance.
and so there are variations from card to card.