Kacper11, studio is precisely what I use the rb for, with studio strobes and a 7 foot octa or with fresnels flooded for razor sharp shadows at the other extreme. I like the ability of the d850 to select the format based on the image I am capturing and seeing it in the view finder. I am a portrait photographer and tend to stay with the 4x5 ratio or square depending on what I am looking to accomplish with the movement of the viewers eye in the frame and if the composition lends itself to either format. Shooting headshots, I would be cropping in post because 2x3 is too tall. I like the 6x7 ratio of the RB for portraiture, I find it more versatile than square. I understand how you feel about lenses, they will have to pry my Nikon 135 2.o dc from my cold dead fingers... unless it gets an up date that improves the bokeh and and at the same time reduces ca.