WhatsApp users will soon be able to select from 10 filters and 10 backgrounds to ... dreamy, prism light, fisheye, vintage TV, frosted glass and duo ; And there are 10 backgrounds - blur ...

Apertures are measured in f-numbers, or f-stops, which is where the concept can start to get a bit more confusing. A small f-number, like f/2.8, is a wide aperture.

Filters and backgrounds come to WhatsApp for mobile, but not for desktop. According to Meta, the filters and backgrounds can be selected when a one-on-one or group video chat has commenced.