The Image Quality Of Lenses For Digital Photography

By Dr. Karl Lenhardt, Bad Kreuznach

The realm of digital photography is undergoing a transformative surge. In Germany, digital cameras now surpass traditional ones in sales value, presenting a dizzying array of options for consumers. With over 80 models featuring image sensors of 2 million pixels or more, navigating this sea of choices can be overwhelming. Potential buyers are left pondering the critical question: how to determine the best camera based on picture quality?

This article delves into this intricate issue, focusing on the "transfer chain" in digital photography—a series of components within the camera that collectively impact image quality. From the lens that captures the visual information to the image sensor and beyond, each link in this chain plays a vital role. We will explore key factors such as image sharpness, contrast, geometric accuracy, brightness distribution, light transmission, stray light minimization, and the absence of color fringes. Understanding these elements is essential for making an informed decision in the rapidly evolving landscape of digital photography.