How to use arducam_64mp & arducam_64mp FAQ

[Edward]

Question 13 64MP autofocus not available

Arducam_64mp autofocus via libcamera-still

So I received a 64MP camera, installed using the instructions from the website, on a brand new installation. Unfortunately, it just does not focus at all using libcamera-still. I can open the Arducam focusing software, and get a sharp image that way, but I want to run this system headless, and with auto-focus, not human-controlled focus. I have used a slew of commands to no success, and cannot focus using these for example: libcamera-still --autofocus-on-capture=1 --width 4624 --height 3472…

[Edward]

Question 14 Time to fetch data at maximum resolution

One frame takes 0.7 seconds

Arducam 64Mp burst mode - fastest capture speed at full res

@iliesaya It’s just the speed of taking pictures [image] Saving pictures will waste a lot of time because of the need for coding [image] You can see that it takes two seconds to save the image. You can write a program that uses multi-threading to take out the data and save it with another thread.

code

ArduCAM/picamera2_examples/blob/main/64mp_speed_test.py

[Edward]

Question 15 Max resolution problem

Some discussion:

Arducam 64mp random *** failed to allocate capture buffers *** with added cma-512

Hi! Pi 4 with 2G here. I’m getting random errors with memory allocation. Sometimes command needs to be executed several times to capture an image. dtoverlay=vc4-kms-v3d,cma-512 was added. CmaTotal: 524288 kB CmaFree: 426756 kB Shooting in JPG usually works fine. Adding -r for Raw output crashes randomly. Will post logs in next post repeating command after it fails without changing anything eventually works. I guess this is software problem. Lets fix it.