I'm looking forward to taking landscape photos with my new wide-angle lens.

He is an expert in entomology, especially knowledgeable about butterflies.

Insects are an important part of the natural world.

He is world-famous as an entomologist.

My new camera comes with a fisheye lens.

She put on coloured contact lenses and changed the color of her eyes.

The lenticular galaxy was named so because its shape resembles a lens.