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Lens choice

Ampleye cameras work with Canon EF lenses to ensure outstanding image quality. The range of lenses available allow you to create both a huge view as well as extremely narrow views with incredible details and anything in between.

How to select the most suitable lens for a certain application? Answer the following questions: 
  • What do you need to see?
    Determine the level of detail required. This can be a given resolution in pix/m or pix/ft at a certain distance, or the request for observation, detection, identification or (face) recognition.
  • What is the distance to target?
    Determine the distance to target. If there are multiple options to install the camera(s), all options can be reviewed.
  • Day or night?
    Do you need to see people, objects or vehicles during the day, night or both?
  • How much light is already present in the scene, and what type of lighting is used?
With this information you can calculate the most suitable focal length for your application. Use the Ampleye lens calculator.

Besides the focal length you should also take the f-number of the lens into account. The lower the minimum f-number, the wider the maximum aperture. A wide maximum aperture allows the camera to use a shorter exposure which prevents motion blur, whereas other less light-sensitive cameras and lenses have to use a longer exposure which introduces motion blur.

The following tools can be helpful in determining the lens:
  • Ampleye lens calculator: Calculate the resolution in pix/m and FOV (Field-of-View) at certain distance with different focal lengths.
  • DOF calculator: Calculate the depth-of-field (range of distance in the image that appears to be in focus) with a DOF calculator (select a camera type with 35mm sensor. This is more likely to become an issue with a larger aperture (small f – number) and a large distance to cover from relatively close from the camera.
  • Ampleye lens overview: Ask us for an overview of different lenses with the Nox-20 to create different FOVs.
Contact us directly for more advice and tools.

Thank you.