3:2 Aspect Ratio Image Test Card Enhanced Version eSFR Test Chart 4000 LW/PH ISO 12233 Test Card

The enhanced version also offers additional wedge options. The maximum wedge frequency of 4000 LW/PH is suitable for higher-resolution cameras, but is only available on 4x-sized charts.

The following lists the differences between the Imatest chart and the chart shown in the ISO 12233 standard:

1. 1.Uses an OECF grayscale pattern with 20 patches instead of the 16-patch version.
2. 2.The focal pattern at the center of the square is rectangular (to increase the MTF measurement area), aimed at reducing interference with automatic edge detection.
3. 3.There are four registration marks instead of three for automatic area detection. Projection transformation requires four features.
4. 4.The additional mark above the registration mark in the lower-left corner is used to detect the orientation of the chart.

The differences between the enhanced version and the standard version are as follows:

• Added six additional tilted blocks for measuring performance near image boundaries.
• Several hyperbolic wedges with spatial frequencies, similar to the CIPA test chart referenced in ISO standards, used for visual analysis or in conjunction with the Imatest Wedge module.
• 16 color patches, produced using technology that allows for color (inkjet or color LVT), with colors similar to the industry-standard 24-color test chart.

Starting from Imatest 4.0, this chart is designed to be used in conjunction with the fully automated eSFR ISO module.