Opto Engineering® - 20 years
Home Optics Macro & Fixed focal length lenses EN5MP series
Compatible products
Main optical specifications
Focal length (mm) 25
Magnification (1) (x) 0.127
Image circle diameter (mm) 11.0
Max sensor size 2/3″
Angle of view
1/3” (deg) 13.7
1/2” (deg) 18.2
2/3” (deg) 24.8
Object field of view
1/3” (1) 37.94 x 28.46
1/2” (1) 50.59 x 37.94
2/3” (1) 67.19 x 56.05
Advanced optical specifications
Working distance range (2) (m) 0.2 - inf
ƒ/N 1.4 - 22
Back focal length (mm) 12.78
Distortion on 1/3" (3) (%) 0.12
Distortion on 1/2" (3) (%) 0.17
Distortion on 2/3" (3) (%) 0.19
Mechanical specifications
Iris control Manual
Focus control Manual
Mount C
Filter thread M37.5 x 0.5
Outer diameter (mm) 43.3
Length (4) (mm) 54.5
Mass (g) 148
Environmental specifications
Operating temperature (°C) -10-+50

Last update 26 Jul 2023



  1. Calculated at minimum object distance.
  2. Working distance: distance between the front end of the mechanics and the object.
  3. Value calculated at the corner point of the sensor diagonal. For distortion graphs see datasheet
  4. Measured from the front end of the mechanics to the camera flange at infinite focusing.
All product specifications and data are subject to change without notice to improve reliability, functionality, design or other. Photos and pictures are for illustration purposes only.

Technical documents

Product user guide


Download datasheet

Layout files

Despite the efforts made to generate an error-free compatibility list, we always recommend to consult the Opto Engineering® technical support department before purchasing a compatible product. Opto Engineering® shall not be liable for any damage or malfunctioning caused by the incorrect selection of a compatible product.
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