Re: Measurement of Chromatic Aberration

Zaphod wrote:

Hi,

I'm working on an imaging system with CMOS sensors. The lenses being
used sometimes caused blurred images, some analysis using a software
called 'Imatest' showed that the amount of Chromatic aberration is
really high, but I'm not really sure about what the measurements
actually are. I'm not an optics guy, but would like some links to the
standard way of measuring chromatic aberration. Any pointers would be
greatly appreciated.

Unless it is a really pathetic lens or a very high magnification it should not have serious blurring due to chromatic abberations.

Longitudinal CA is approximately cancelled out in an achromatic lens. The residual transverse CA causes colour finrging away from the optic axis. See:

http://www.vanwalree.com/optics/chromatic.html

For a simple intro.

Regards,
Martin Brown
.