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Basler Lens F-S35-2528-45M-S-SD#

Basler Standard F-mount lens with a fixed focal length of 25 mm, aperture range from F2.8–F22, and a resolution of 45 MP.

Basler Lens F-S35-2528-45M-S-SD

Key Features#

  • Fits all Basler cameras with F-mount, a sensor size of up to Super 35 and a pixel pitch of 3.2 µm
  • Metal housing
  • F-mount
  • Locking screws for iris and focus
  • High contrast


The technical data shown in the following sections are nominal design values. The real values of the delivered products can deviate from the nominal design values.

General Specifications#

Order Number 2200001069
Focal Length f' 24.5 mm ± 5 %
Aperture Range F2.8–F22
Image Circle 32 mm (Super 35 format)
Focus Range 0.17–1.7 m
Optimum Working Distance 0.22 m
Optimum Magnification 0.1
Relative Illumination at Full Aperture At least 69 %
Resolution Designed for 155 LP/mm (3.2 µm pixel size, see Resolution versus Image Height)
MTF in the Center at 155 LP/mm
(conditions: F2.8, polychromatic, 0.1x Magnification)
>27 % @ 155 LP/mm
MTF in the Corner at 155 LP/mm
(conditions: F2.8, polychromatic, 0.1x Magnification)
>26 % @ 155 LP/mm
Optical Distortion Typical -1.35 % (barrel distortion, see Distortion versus Image Height)
Angle of View, Super 35 Format Horizontal: 55.7° (@ MOD)
Vertical: 39.1° (@ MOD)
Wavelength Range Visible (400–700 nm)
Pupil Magnification, ß'P 3.49
Chief Ray Angle, CRA 10°
Front Focal Length, sF 26 mm
Back Focal Length, s'F 23.74 mm
Principal Point Separation, HH' 61.99 mm
Entrance Pupil Position, sEP 36.42 mm
Exit Pupil Position, s'AP -60.33 mm
Overall Optical Length, d 116.5 mm

Mechanical Specifications#

Flange Back 46.5 mm +0/-0.2 mm
Mount F-mount
Weight Approx. 580 g
Focus/Iris Operation Manual
Operating angle: 90°/80.84°

Lens Dimensions#

Basler Lens F-S35-2528-45M-S-SD

Environmental Requirements#

Temperature During Operation -10–50 °C (14–122 °F)
(For best results, adjust the focus when a steady operating temperature has been reached.)
Humidity During Operation 10–90 % relative humidity, non-condensing
Temperature During Storage -20–60 °C (-4–140 °F)
Humidity During Storage <55 %

Performance Charts#

Relative Illumination versus Image Height#

Relative Illumination versus Image Height

Distortion versus Image Height#

Distortion versus Image Height



Resolution versus Image Height#

Conditions:f/2.8, polychromatic, 0.22 m working distance

Resolution versus Image Height