This is the 6844th most frequent French word.
lens
The French word "lens" means a "thin optical device used to focus or disperse light."
Here, 'objective' refers to a camera lens, a piece of equipment used for photography.
J'ai acheté un nouvel objectif pour mon appareil photo.
I bought a new lens for my camera.
In this sentence, 'lentilles' refers to the lenses of eyeglasses, which correct or improve vision.
Les lentilles de mes lunettes sont rayées.
The lenses of my glasses are scratched.
Here, 'lentille' indicates a magnifying lens used for enlarging small items for observation.