Lens choice for video

Hello,

I am actally in order for the nikon Zr, i plan to film some documentaries, cinematic video. And i am struggling for choose a lens. I am debating beetween nikkor 35mm 1.8 S and Tamron 28-75 G2. What is your consideration about zoom lens and cinematic shot like? I never stop to get documented on, and i can't find a proper, suitable answer, but everytime i feel like zoom lens never give the right cinematic look for video. I feel like, zoom lens is just for play, not for true cinematic quality. Off course it done the job, when fast peace edit. But for proper cinematic slow down video, i feel like it doesnt match. I never got catch up by video film in zoom. Did you have some advice? I am alone to feel this? Maybe i am just wrong and not find the right review to look at.

I am affraid to put my last fews bucks in a lens that i cannot use like i want. I like get more focal length with the tamron, but if i never get the cinematic look like result with, it is a waste of money for me.