How many cameras does a system need?

The number of cameras and the necessary mix of low- and high-end models you need depends on how you will use a machine-vision system. Ann R. Thryft, Contributing Technical Editor – Test & Measurement World, 10/1/2011 12:00:00 AM Joost van Kuijk CEO/CMO Multiple-camera vision systems can contain anywhere from three cameras for simple applications, such…

Why the Modulation Transfer Function – MTF – also matters with camera selection, especially in NIR

The Optical Transfer Function (OTF) is an important specification of lens performance. The OTF describes both the amplitude and the phase of a signal. In most cases the former, most times indicated as is Modulation Transfer Function (MTF), suffices. Modulation, as it is a measure of the modulation depth (contrast) of an optical signal. The MTF is for that…