Easily determine the ideal Schneider-Kreuznach industrial lens and accessory configuration for your application. By entering your sensor specifications, object dimensions or desired magnification, and working distance, our calculator provides precise lens solutions and the required accessory chain to achieve optimal imaging results. Instantly find compatible extension tubes, adapters, and Unifoc systems to complete your setup. Please note: This calculator does not provide results for telecentric lenses or liquid lenses. For these lens types, please refer to the dedicated product family pages, where you will find all technical data and calculation details.
Input Your Parameters: Specify your sensor, object width/height, working distance, and/or desired magnification.
Select Mount & Filter: Define your camera mount and any optical filters you intend to use.
Calculate Solutions: The system instantly computes and displays a list of compatible Schneider-Kreuznach lenses.
Detailed Accessory Chains: For each lens solution, view the precise accessory chain required, including extension tubes, adapters, and Unifoc systems.
Explore & Export: Compare solutions, view technical drawings, download datasheets and STEP files, and save your complete calculation as a PDF.
The tool helps you find the right lenses and the necessary accessories for your optical system. To start the calculation, please fill in the input fields as precisely as possible. The calculator strictly follows predefined parameters. This means that even slight variations – as little as 0.1 mm – can lead to potentially suitable lenses being excluded from the results.
If you don’t receive any results, try adjusting your values slightly. One useful strategy is to leave out the working distance or focal length. This often results in a broader list of lenses from which you can then select the one that best fits your application. If these adjustments still don’t lead to the desired result or you need tailored advice, don’t hesitate to contact our sales team. We’ll be happy to assist you in finding the optimal solution.
Sensor: Select your camera sensor from the list (standard formats, specific manufacturer models, or enter a custom size).
Working Distance (WD): Ensure the dropdown is set to "WD" and enter your desired working distance in millimeters. This is the distance from the front edge of the lens to the object.
Object Width / Height: Define the dimensions of the area you want to capture. One value is sufficient.
Based on this input, the calculator determines the required magnification and searches for suitable lenses. This mode is ideal if you have a fixed working distance and need to achieve a specific field of view.
Mode 2: Working Distance and Magnification Known
Sensor: Select your camera sensor.
Working Distance (WD): Enter the desired working distance (set dropdown to "WD"). You may also leave this field blank, which will provide a larger list of possible lenses.
Magnification: Enter the desired optical magnification. The object width and height fields will be deactivated, as they are implied by the magnification.
This mode is useful when magnification is a key requirement for your application and the working distance is also important.
Mode 3: Focal Length and Object Size / Magnification Known
Sensor: Select your camera sensor.
Focal Length (FL): Change the dropdown next to the working distance field from "WD" to "Focal length", and enter the desired focal length of the lens.
Object Width / Height or Magnification: Complete your input either by specifying your object’s dimensions or by directly entering the required magnification.
This mode is especially useful if you already have a specific focal length in mind or want to work with specific lens types and determine the resulting working distance.
Other Important Inputs for Precise Results: Camera Mount and Flange Distance
Camera Mount: Choose your camera’s mount type (e.g., C-Mount, F-Mount). For many common mounts, the flange distance (distance from the camera’s mounting flange to the sensor) is automatically filled into the "Camera Flange (mm)" field and set to read-only.
Custom Mounts: If your mount does not have a predefined flange distance (e.g., M42x1), please enter the flange distance manually.
Optical Filters: If you wish to use an optical filter (e.g., bandpass), select it from the list. The calculator will include it in the accessory setup and recommend the appropriate filter size.
Calculate System and View Accessory Chain
After entering all relevant parameters, click "Calculate system".
Results Table: The calculator will display a list of potentially suitable lenses. Key parameters such as effective focal length, resulting magnification, required extension rings, effective working distance, flange focal distance, object-to-image distance, and object-to-camera distance are clearly shown.
Accessory Chain: Click on the name of a lens (indicated by a "+" symbol) to view the detailed accessory chain for the selected optical setup. This expanded view shows all components in sequence, from the (optional) filter to the lens, any extension rings or adapters, and the camera mount.
UNIFOC Options (if available): For lenses requiring a UNIFOC focusing helicoid (e.g., PYRITE series), a dropdown will appear here. You can choose between different UNIFOC types, which affect focus range and total system length. The table and accessory chain update accordingly.
Additional Options in the Detail View
Schematic Drawing: Displays a simplified layout of optical distances and system dimensions.
Lens Datasheet: Opens the PDF datasheet for the selected lens.
Download STEP Files: Allows you to download a ZIP archive containing 3D models of all components for use in your CAD design.
Save and Reload Configuration: Generates a PDF with all input parameters and the resulting system configuration. The PDF also includes a link to reload the configuration later.
Request a Quote: Takes you directly to our contact form, with your configuration already attached for reference.
Disclaimer on calculations
Although the provided data, which forms the basis for these calculations, has been checked with the utmost care, errors cannot be entirely ruled out. The information is intended as a guideline only. For any questions or ambiguities, please contact our sales team.
