· Get a Cloudy Nights T-Shirt · Submit a Review / Article Click here if you are having trouble logging into the forums Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Home | Register | Login   Home > Photo Galleries > Binoculars     Pupil size versus illumination (large version) Click on image to view larger image Poster: Yagobet (see all of this user's photos) Description: Comparison of pupil size: with strong illumination and with dim illumination on 10.5x70 binoculars. See thread "Photographing-measuring the pupils with binoculars"

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