eSFR ISO 12233 2023 "Slanted Star"

eSFR ISO adds support for analyzing the 2023 “slanted star” revision of the ISO 12233 test chart


  • Slanted star features double the slanted-edge measurement regions, enabling sagittal and tangential measurements from the corner of an image.

  • Logarithmic wedges with improved frequency distribution.

  • 18 color patches similar to the industry standard 24-patch chart.

  • New test chart available: Inkjet, Lightboxes, High-precision Film.

ISO 12233:2023 slanted star Edge SFR test chart with color and gray patches

Additional linearization options for eSFR ISO & SFRplus

Including the ability to linearize using the inverse of the OECF measured from the grayscale step chart patches. This can improve the accuracy of MTF measurements with systems that have nonlinear tonal response or when using higher contrast targets.

eSFR ISO 12233 2023 chart center with the grayscale OECF patch ring emphasized

Dynamic Range Postprocessor


  • Produces results similar to IEEE P2020 (draft) noise standard. Described in A review of IEEE P2020 noise metrics

  • Now supports sensor dynamic range calculations from multi-image exposures from HDR sensors.

Dynamic Range postprocessor plot of temporal and total S/N versus exposure in dB

Stray Light

Stray light map for a monochrome capture showing the bright source and surrounding stray light

Other Features


  • Arbitrary Charts: Includes CIELAB 94 ΔH and CIELAB 2000 ΔH to Arbitrary Charts color analysis.


  • Installer: significantly reduced installer and installation size.

  • MacOS 14 Sonoma Support


Main Window Improvements



  • New License Manager to administer your Imatest license. Activate, deactivate, and more.

  • Includes the ability to view the first frame of video files in Image Preview.


  • Includes General Settings performance improvements.

Imatest Master 23.2 main window in dark mode with an eSFR ISO 2023 chart image selected