You have a camera — usually with a kit lens — and you're wondering which second lens will actually make your photos better. Or you're facing your first purchase and getting overwhelmed by zooms, primes, f-numbers and prices between €150 and €3,000. Most guides list lenses as if "more expensive = better" were a law of nature.
That's not true — especially if you shoot as a hobby and don't earn 40 hours a week with a camera. A solid mid-range lens you actually use beats high-end glass sitting in a cupboard because it's too heavy, too expensive or too specialised.
This guide answers a different question: Which lens fits what you want to photograph? With a focus on mid-range primes and concrete models for the common systems. What mm numbers mean is explained in depth in Which Focal Length for What. Which camera to start with: Camera for Beginners.



