did you know - photo fact #10246 Posted by Richard Lippert on October 24, 2016 f/8.3 | In bright light, the human eye has about this f-number (also referred to as f-stop or relative aperture). This number varies from about f/8.3 in a very brightly lit place to about f/2.1 in the dark. Tags: dyk | did you know Share Share on Facebook Tweet Tweet on Twitter Pin it Pin on Pinterest 0 comments Leave a comment Name Email Message Please note, comments must be approved before they are published