Not All Five Megapixels Are Created Equal: The Impact of Pixel Size on System Performance and Cost

Pixel size is a critical but often overlooked factor in determining the overall value and performance of an imaging system.

Although two cameras may offer the same nominal resolution, differences in pixel size can significantly affect sensitivity, optical requirements, and low-light performance. Larger pixels generally collect more photons, improving image quality and contrast, while smaller pixels can provide higher spatial sampling and enable more compact optical designs. These trade-offs directly influence system-level costs, including optics.

This session examines how pixel size impacts the performance of 5-MP imaging systems and demonstrates why resolution alone is not always sufficient for evaluating camera performance. By considering sensor characteristics alongside optical requirements, the analysis provides a framework for selecting the appropriate pixel size to achieve the desired balance between image quality and total system cost. image quality and total system cost.

About the presenter
Christopher Razze is a machine vision sales engineer at Edmund Optics, where he helps customers to source the right lenses, cameras, and illumination for their machine vision systems. After several technical sales roles at Edmund Optics, Razze began specializing in imaging lens technology and machine vision. He previously worked as a chemical process operator at Hikma Pharmaceuticals and received a bachelor’s degree in chemical engineering from Rowan University.