Call Us +44(0) 1590 679333
Welcome visitor you can login or create an account.


Industrial Cameras and Vision Systems 



1/2.5" Format

These lenses are compatible with sensors up to 1/.25" format, or 0.4mm. They can also be used with any sensor that is smaller than 1/2.5".

  • S-Mount 4mm f1.8 Lens

    S-Mount 4mm f1.8 Lens

    • Focal Length: 4mm
    • F Stop: f1.8
    • Iris: Non adjustable
    • Mount: M12
    • Format: 1/2.5"
    • Filter Size: n/a
    • IR Block: No IR Block
    • Megapixel: 5MP
    • Horizontal Field of View: 94 Degrees
    • Distortion: <-54%
    • Back Focus: 8

    [+] favourites

    Log in or create an account to see pricing


    Availability: N/A
    SKU: SVL-IR0418B5M
    Description Return Policy

    Please download our M12 Lens Whitepaper for more information about M12 lenses:

    M12 Lens White Paper M12 Lens White Paper (1263 KB)

    To help you to choose a camera that is compatible with this lens please download our document on lens and camera compatibility:

    Lens and Sensor Compatibility Lens and Sensor Compatibility (889 KB)

    Specification Document:

    SVL-IR0418B5M SVL-IR0418B5M (142 KB)


    Sample Images

    Sensor: 1/3" Aptina MT9V024

    In the below image the sugar cube is 35mm from the lens. This is the minimum distance at which the entire cube remains in focus.

    The sugar cube measures 16mm x 14mm.


    The coin was  at a distance of approx. 23mm.


    In this next image the coin was at a distance of 156mm.


    In these sample images the sensor used was a 1/4" Sony ICX618. The first image is focused at a distance of 8mm from the lens and the second at 11mm. This lens has a small f number of f1.8 creating a narrow depth of field.

    Return Policy

    Unwanted or Unsuitable Items

    If you are unhappy with a product you have purchased from us, you may return the product within 7 days of delivery for a refund. All products must be returned in their original packaging and in are-saleable condition (with any seals or wrapping unbroken). You are responsible for the cost of returning unwanted items to us.We may also charge you a re-stocking fee of 15% of the full cost of goods.Please request an RMA number before you return the product.

    Damaged Items

    Please do not accept or sign for an order which is visibly damaged. If you receive an item which has been damaged in transit, please contact us as soon as possible. We will do our best to provide a replacement as soon as possible. This does not affect your statutory rights.

    Faulty Items

    In the unlikely event that you receive an item which proves to be faulty we are happy to help. However, we do ask that you notify us of any problem within a reasonable period of time. Please request an RMA number before you return the product.

    Items Received In Error

    If you receive an item that you did not order, please notify us as soon as possible.

    How to Return a Product
    1. Please send an email to: customerservice @ or call our Customer Service Department on +44(0)1590 679333 for Returns Authorisation
    2. Please provide your order number, and a brief explanation of the problem
    3. Write the RMA number on the returning documentation
    4. Post the goods back to our Returns Department
    Our returns address is:


    Returns Dept.
    Unit 5
    Dell Buildings
    Milford Road
    Hampshire SO41 0ED



    Related Products