anamorphic lenses 1.5x

Hi there,
This would be my first time using anamorphic lenses.
My camera is a bmpcc 6k and I would like to use some Blazar 1.5x anamorphic lenses.
There is only an anamorphic mode , the 3.7k anamorphic mode which expects a 2x squeeze.
There is an open gate 6k , 3:2 mode too, if i'm not mistaken
1. What mode do you recommend?
2. My preview monitor has several desqueze modes 16:9, 1.89:1, 2.35:1.
What should I use to have an usable preview image?
Thank you.
This would be my first time using anamorphic lenses.
My camera is a bmpcc 6k and I would like to use some Blazar 1.5x anamorphic lenses.
There is only an anamorphic mode , the 3.7k anamorphic mode which expects a 2x squeeze.
There is an open gate 6k , 3:2 mode too, if i'm not mistaken
1. What mode do you recommend?
2. My preview monitor has several desqueze modes 16:9, 1.89:1, 2.35:1.
What should I use to have an usable preview image?
Thank you.