The measurement of the Modulation Transfer Function (MTF) has become the most accepted test in the range of quality
control of optics. Years ago only high quality optics like e.g. satellite or professional camera objectives have been MTFtested.
Nowadays even simple optical systems like cell phone cameras objectives are 100% tested. But not only single
objectives have to be tested. If a perfect objective is badly aligned with respect to the sensor the result will be a bad MTF
too. Therefore it is also recommended for the final camera inspection to measure the total MTF of the system objective
plus sensor (CMOS or CCD). TRIOPTICS developed a MTF equipment to measure the MTF on 9 different field
positions and different object distances of a complete camera in a few seconds. The system comprises a special target
generator with slanted crosses as targets and new developed software to grab images and to calculate the MTF of the
complete camera in realtime.