My friend's last name is Lensing.

I need to buy new contact lenses.

I love using zoom lenses for photography.

Gravitational lenses are formed by the bending of light due to the gravitational pull of massive objects.

I love using macro lenses to capture the intricate details of small objects.

Fresnel lenses are commonly used in lighthouses to focus and amplify light.

I bought a pair of echelon lenses for my new glasses.

I have two Petzval lenses in my camera bag.

I love using telephoto lenses for wildlife photography.

Achromatic lenses are used in optical systems to correct chromatic aberration.