←back to thread

A laser pointer at 2B FPS [video]

(www.youtube.com)
615 points thunderbong | 1 comments | 19 Oct 25 06:42 UTC | HN request time: 0s | source
Show context
brcmthrowaway ◴[21 Oct 25 03:27 UTC] No.45652140[source]▶
How is the image focused and not a big blur?
replies(2): >>45652628 #>>45653968 #
1. teaearlgraycold ◴[21 Oct 25 09:24 UTC] No.45653968[source]▶
It’s in focus because only a small angular area from the scene contributes to the light that reaches the sensor. You get blur when sensor elements (individual pixels) receive light from too wide of an area.