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 SoSoRoCoCo on Thursday December 31, 2020 @05:49PM (#25598095)

That's on my list to try!

I made a rotational-to-linear translator with adjustable linear depth using 1/4" HDPE and a gigantic OMAX waterjet cutter. The pitches were perfect to within 0.0001", but the design was five layers of gears, some were planetary, others slid on cams. Trying to connect planar gears is very effing hard when you can't use a pass-through collet (e.g., the pinion has to be FLUSH but yet allow rotation).

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Re:Autofocus for the 16mm Telephoto Lens Mounted on the Rasp... by alacombe on Thursday December 31, 2020 @06:19PM (#25598396)

I doubt you can get 0.1 thou tolerance out of a water cutter.

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Re:Autofocus for the 16mm Telephoto Lens Mounted on the Rasp... by SoSoRoCoCo on Thursday December 31, 2020 @08:56PM (#25599983)

Sorry, I was off by one decimal place.

http://info.omax.com/precision

Average of ±0.003" (±0.08 mm) and up to 0.001” (±25 µ)

About the same as a laser cutter.

You set it to cut very slowly and it angles the head to account for motion and material deformation (you need to program the type of material).

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Re:Autofocus for the 16mm Telephoto Lens Mounted on the Rasp... by tejtm on Thursday December 31, 2020 @06:34PM (#25598560)

I would suspect GP is referring to precision as amplified through the gear chain

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