3 ms·

ArduCAM claims that it's better (see https://www.arducam.com/wp-content/uploads/2021/10/camera-module-v3-offers-better-quality.jpg https://www.arducam.com/wp-co

ArduCAM claims that it's better (see https://www.arducam.com/wp-content/uploads/2021/10/camera-module-v3-offers-better-quality.jpg https://www.arducam.com/wp-content/uploads/2021/10/camera-mo...). It has better resolution (16MP vs 12.3MP). However, the HQ has better changeable lenses available. I'm updating the rPIFocus (https://github.com/lemariva/rPIFocus https://github.com/lemariva/rPIFocus) repository to include the camera and test it. The autofocus speed will be definitely faster :).

jcun4128 5y ago
We might be talking of different cameras my bad, I was referring to this tilt zoom one that looked interesting. https://www.arducam.com/product/arducam-12mp-pan-tilt-zoom-ptz-camera-fo-raspberry-pi-and-jetson-nano/ https://www.arducam.com/product/arducam-12mp-pan-tilt-zoom-p...
- lemariva 5y ago
  I thought you were talking about my "autofocus" project (https://www.youtube.com/watch?v=PrbyPmq_Z7Q https://www.youtube.com/watch?v=PrbyPmq_Z7Q). The arducam-12mp-pan-tilt-zoom uses the same sensor (IMX477) as the HQ. Thus, the resolution claim should be the same ;).
  - jcun4128 5y ago
    Last question, what's the reason for the spiral gear? Aperture ring belt, looks like it grips the adjusting part of lens body and then something turns it, spiral is just excess material.
    - lemariva 5y ago
      I used two steppers to turn the aperture and the focal length rings of the lens independently. Then, you can set the aperture ring to 1.4, 2.8, 5.6, 8, or 16 and then focus the image with the other ring/belt. Both rings or belts move independently. In the beginning, I used a calibration routine to identify the maximal or minimal position of the rings. Both limits are detected by moving the rings in both directions and measuring the stepper currents. When the stepper reaches a limit, a current peak is measured, and that gives me the minimal o maximal angle.
      - jcun4128 5y ago
        Really cool project, the gaussian focus bit is neat too, need to look into that more

jcun4128 5y ago

We might be talking of different cameras my bad, I was referring to this tilt zoom one that looked interesting. https://www.arducam.com/product/arducam-12mp-pan-tilt-zoom-ptz-camera-fo-raspberry-pi-and-jetson-nano/ https://www.arducam.com/product/arducam-12mp-pan-tilt-zoom-p...

lemariva 5y ago
I thought you were talking about my "autofocus" project (https://www.youtube.com/watch?v=PrbyPmq_Z7Q https://www.youtube.com/watch?v=PrbyPmq_Z7Q). The arducam-12mp-pan-tilt-zoom uses the same sensor (IMX477) as the HQ. Thus, the resolution claim should be the same ;).
- jcun4128 5y ago
  Last question, what's the reason for the spiral gear? Aperture ring belt, looks like it grips the adjusting part of lens body and then something turns it, spiral is just excess material.
  - lemariva 5y ago
    I used two steppers to turn the aperture and the focal length rings of the lens independently. Then, you can set the aperture ring to 1.4, 2.8, 5.6, 8, or 16 and then focus the image with the other ring/belt. Both rings or belts move independently. In the beginning, I used a calibration routine to identify the maximal or minimal position of the rings. Both limits are detected by moving the rings in both directions and measuring the stepper currents. When the stepper reaches a limit, a current peak is measured, and that gives me the minimal o maximal angle.
    - jcun4128 5y ago
      Really cool project, the gaussian focus bit is neat too, need to look into that more