Specification​s

Lens Configuration

MTF Chart

Vertical axis : Contrast

Horizontal axis : Distance from the center of the image

S : Sagittal

M : Meridional

Spatial frequency 15 lines/mm
Spatial freguency 45lines/mm

Specifications

TypeXF18mmF1.4 R LM WR
Lens configuration15 elements in 9 groups
(includes 3 aspherical and 1 ED elements)
Focal lengthf=18mm (27mm)
Angle of view76.5°
Max. apertureF1.4
Min. apertureF16
Aperture control
Number of blades9(rounded diaphragm opening)
Step size1/3EV (22 steps)
Focus range20cm - ∞
Max. magnification0.15x
External dimensions : Diameter x Length*1 (approx.)Ø68.8mm x 75.6mm
Weight*2 (approx.)370g
Filter sizeØ62mm

NOTES

*1 distance from camera lens mount flange

*2 excluding caps and hoods