Dawson et al. (4)

I believe the answer is:

lens

(Other definitions for lens that I've seen before include "Light-focusing device" , "town in France" , "Optical refractor" , "Refracting device" , "feature of camera" .)

I've seen this clue in the Penny Press.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.