I have three questions to ask you. Thank you very much!

I have three questions to ask you. Thank you very much
First problem, in the installation of zed-sdk, my installation location is: /usr/local/zed, in this directory there is a setting folder, in this folder there is a SN8452341.conf, after opening it will display the following data:
[LEFT_CAM_2K]

fx=1403.76

fy=1403.4

cx=1109.57

cy=592.367

k1=-0.175286

k2=0.0283094

p1=6.68414e-05

p2=-0.000150431

k3=4.06032e-11

[RIGHT_CAM_2K]

fx=1401.93

fy=1402.22

cx=1094.03

cy=622.627

k1=-0.172795

k2=0.0265223

p1=0.000164482

p2=1.02174e-05

k3=-1.0484e-10

[LEFT_CAM_FHD]

fx=1403.76

fy=1403.4

cx=965.57

cy=511.367

k1=-0.175286

k2=0.0283094

p1=6.68414e-05

p2=-0.000150431

k3=4.06032e-11

[RIGHT_CAM_FHD]

fx=1401.93

fy=1402.22

cx=950.03

cy=541.627

k1=-0.172795

k2=0.0265223

p1=0.000164482

p2=1.02174e-05

k3=-1.0484e-10

[LEFT_CAM_HD]

fx=701.88

fy=701.7

cx=641.285

cy=344.1835

k1=-0.175286

k2=0.0283094

p1=6.68414e-05

p2=-0.000150431

k3=4.06032e-11

[RIGHT_CAM_HD]

fx=700.965

fy=701.11

cx=633.515

cy=359.3135

k1=-0.172795

k2=0.0265223

p1=0.000164482

p2=1.02174e-05

k3=-1.0484e-10

[LEFT_CAM_VGA]

fx=350.94

fy=350.85

cx=336.1425

cy=179.59175

k1=-0.175286

k2=0.0283094

p1=6.68414e-05

p2=-0.000150431

k3=4.06032e-11

[RIGHT_CAM_VGA]

fx=350.4825

fy=350.555

cx=332.2575

cy=187.15675

k1=-0.172795

k2=0.0265223

p1=0.000164482

p2=1.02174e-05

k3=-1.0484e-10

[STEREO]

Baseline=119.978

TY=0.0259812

TZ=0.0158877

CV_2K=0.00623976

CV_FHD=0.00623976

CV_HD=0.00623976

CV_VGA=0.00623976

RX_2K=-0.000916611

RX_FHD=-0.000916611

RX_HD=-0.000916611

RX_VGA=-0.000916611

RZ_2K=0.000770041

RZ_FHD=0.000770041

RZ_HD=0.000770041

RZ_VGA=0.000770041

[MISC]

Sensor_ID=0

Hi @zhangYQHBAU
Welcome to the Stereolabs community.

Please send the three questions. I cannot read them.