how do camera lenses have a “resolution” and a mega pixel count?

Question

I get details can be blurry on a bad lens but how is this like pixel resolution?

CCTV lenses are often 1-5 megapixel lenses. How can a lens have a mega pixel count?

What does it mean for a lens to “resolve” more detail? Is this just about sharpness?

Also when buying DSLR lenses how can you tell what their resolution will be?

Thanks 🙂

In: 0

Answer 1

When sensor resolution started getting better, flaws in lenses started mattering, so a megapixel rating on a lens is basically saying “the lens won’t be the limiting factor for useful resolution up to this megapixel count”… in theory.