Variation of the focal length along the field - Michel Thoby

14mm Samyang. Ideal 14 mm rectilinear. Focal length (mm) Vs Field Angle. Poly. (Focal length (mm) Vs Field Angle). Variation of the focal length along the field.
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Samyang 14mm Radial Mapping

25

20

Variation of the focal len gth along t he field

15

Distance from sensor centre (mm)

10

5

0 -80

-60

-40

re pa m o C

l» ea «I d

Vs

-20

e «R

rec al»

n ctio roje p ear tilin

0

20

40

-5

-10

-15

-20

-25 Angle of incident light (deg) 14mm Samyang

Ideal 14 mm rectilinear

Focal length (mm) Vs Field Angle

Poly. (Focal length (mm) Vs Field Angle)

60

80