6k Pro full frame s35 mode

Hi, everyone. I just picked up a new 6k pro full frame and when I try to set it to s35 the image looks distorted, like stretched out. Is there something wrong I'm doing? Thanks.

Are you selecting a anamorphic mode?

May have Anamorphic mode enabled.

Thanks for the replies, guys. I may have anamorphic enabled. How would I disable it?

Hit Settings > Monitor Tab > 2nd option screen "Anamorphic De-Squeese" Select None.

But you are aware that S-35 on that camera in full frame is a contradiction?
Filmmakers refer to S-35 as full frame, but the image was exposed sideways on optochemical film, making it smaller, close to APS-C. Photographers consider 36 by 24 mm "full frame", which is shot lengthwise on the same size of film.