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A comment on Autofocus for the 16mm Telephoto Lens Mounted on the Raspberry Pi HQ Camera.

Re:Autofocus for the 16mm Telephoto Lens Mounted on the Rasp... by supernova87a on Friday January 01, 2021 @12:15AM (#25601065)
By the way, maybe this is a slight off-topic (but parallel topic) -- will availability of cheaper Lidars make autofocus an easier / better solved problem some time in the future? Or is this not such a problem to bother with the expense of a Lidar?

If you know exactly the distance to something you want in focus, and it no longer has to be "solved" by phase detection, or edge sharpness? Or is this even already being used with phones having Lidars built in? I guess if your lens isn't perfectly distance calibrated then it fails though.

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Re:Autofocus for the 16mm Telephoto Lens Mounted on the Rasp... by mikeytown2 on Friday January 01, 2021 @12:53AM (#25601220)
Sony and Canon both have phase detection on the sensor. it's fairly accurate and would serve the same purpose as lidar, get really close to perfect focus so contrast detection af can bring it to perfect focus fairly quickly.
[ Parent | on HN ]