iq luminance image

Turn your camera into a luminance meter

The iQ-Luminance is a software that will help turn your camera into a luminance meter. Once properly calibrated, your camera as a luminance meter will provide many different advantages compared to conventional luminance meters.

Main Features:

  • Calculate luminance values from image data
  • Map raw RGB data to the luminance
  • Calibrate at multiple f-stop levels
  • Calibrate for various ISO-settings

Measuring luminance can be a laborious and time-consuming process as most common luminance meters are only capable of single spot measurements with a narrow field of view. Measuring many different points in the image one at a time becomes an extremely difficult task especially when the light in the scene changes over time or when the region of interest in much smaller than the field of view from the measurement device.

The iQ-Luminance software, however, calculates luminance values from the image data taken by a properly calibrated camera. It maps the raw RGB data from the camera to the luminance depending on various exposure settings. The software is also capable of calibrating at several f-stop levels and ISO-settings while also taking the lens’ shading into consideration.

Once the image has been captured, rectangular, circular or polygonal regions of interest (ROI) can be drawn on the image to more efficiently evaluate the selected area. The corresponding luminance is then visualized as a grayscale or false color image.

Please note:

Using your camera as a luminance meter requires an additional camera calibration in our test lab (cost for the calibration varies, but it is separate from the software cost). Without this calibration, the software is ineffective. Please contact us for more details.

Affordable and flexible

  • Non-recurring expenses for camera calibration and software
  • Field of view, exposure parameters and overall performance only limited by the camera/lens combination
  • Calibration can be carried out on different camera settings
  • Exposure settings for the respective situation can be adjusted when preparing the measurement images


  • Simultaneous measurement at millions of points in a scene with a few shots
  • The ratio between different points is unimpaired by temporal changes of the light conditions
  • Evaluate captured images at any time

Consideration of image errors

  • Accounts for the vignetting at the image's edges (shading)
  • The entire field of view can be used as a measuring field when considering shading
  • Set ROI's (regions of interest) at the edge of the image field


  • Entering new maximum and minimum values for scaling, the user can compress the scale and enhance visualization

Easy to use

  • Measurement of luminance value at any arbitrary point in the image
  • Rectangular, elliptical or circular measuring spots in various sizes
  • Evaluation of the luminance distribution along a line
  • Comfortable visual assessment using a false color or greyscale luminance display