New Camera module 3 autofocus/HDR camera thread

[jamesh]

Fill yer boots!

https://www.raspberrypi.com/news/new-au ... a-modules/

[HermannSW]

Nice, I opened 3 of the 6 Germany seller links, one page was not up, the 2nd had no stock, did buy for 28.99€ plus delivery on buyzero.de.
A Raspberry autofocus camera sounds interesting, and the small form factor compared to HQ camera ...

[hansotten]

Nice! About time, the Pi Camera line needed a fresh up with higher quality and autofocus.

The supply lines are not filled alas. No stock anywhere except Pimoroni (a firm I avoid since Brexit).

Logistics problems:, no stock, out of stock, sold out, are what Raspberry Pi's are about since the beginning.

[laurent]

No problem ordering 2 FoV version from Kubii (FR).
And they are still available at the time of writing.

Can't wait to receive them

[jamesh]

Nice! About time, the Pi Camera line needed a fresh up with higher quality and autofocus.

The supply lines are not filled alas. No stock anywhere except Pimoroni (a firm I avoid since Brexit).

Logistics problems:, no stock, out of stock, sold out, are what Raspberry Pi's are about since the beginning.

Stock should be getting to the resellers pretty quickly, imminent in fact.

[aoakley]

Does the new (non-M12) Raspberry Pi Camera 3 fit in the existing Raspberry Pi Zero case with camera lid, please?

https://www.raspberrypi.com/products/ra ... zero-case/

[aallan]

Does the new (non-M12) Raspberry Pi Camera 3 fit in the existing Raspberry Pi Zero case with camera lid, please?

https://www.raspberrypi.com/products/ra ... zero-case/

As the blog post mentions, "Due to changes in the size and position of the sensor module, it is not mechanically compatible with the camera lid for the Raspberry Pi Zero Case."

[drich]

Does HDR only work on still captures or also on video ?

[aallan]

Does HDR only work on still captures or also on video ?

HDR mode works in both still and video modes, see the documentation on the `--hdr` command line option for the libcamera-apps, https://www.raspberrypi.com/documentati ... amera-apps.

[jamesh]

Does HDR only work on still captures or also on video ?

Note that HDR reduces the resulting image size, so for stills its down to about 3MP. But that is well within 1080p so should be fine.

[azsde]

Does someone knows if this will be retro-compatible with the old camera stack ?

There are a few software that I use that are only compatible with the old camera stack (https://github.com/silvanmelchior/RPi_Cam_Web_Interface and https://github.com/mpromonet/v4l2rtspserver) and it would be awesome to be able to just plug the V3 camera and get things working directly.

[jamesh]

Does someone knows if this will be retro-compatible with the old camera stack ?

There are a few software that I use that are only compatible with the old camera stack (https://github.com/silvanmelchior/RPi_Cam_Web_Interface and https://github.com/mpromonet/v4l2rtspserver) and it would be awesome to be able to just plug the V3 camera and get things working directly.

No, the new cameras will only be supported by libcamera.

[cpixip]

I am noticing in the example picture posted on the anouncement

ely2_no_hdr-copy-500x281.jpg (58.08 KiB) Viewed 1760 times

a greenish cast around the edges of the image, combined with a slight magenta one in the center of the image.

Could it be that the ALSC-tables still need some work?

[jamesh]

I am noticing in the example picture posted on the anouncement

ely2_no_hdr-copy-500x281.jpg

a greenish cast around the edges of the image, combined with a slight magenta one in the center of the image.

Could it be that the ALSC-tables still need some work?

Maybe, I'll flag it up to the team. Or it might have been deliberate vignetting.

[therealdavidp]

Yes, we noticed this too. This picture was taken with pre-production software and since then we have remeasured the lens shading tables, so anyone using the official release software will get better results.

[gordon77]

Are the maximum exposure times correct in the tables? I don't think you can get more than 1.2 seconds with the v1 and v2 cameras with libcamera, and hq is 239 seconds ?

[therealdavidp]

There was a code update a while ago that extended the maximum exposure time, so my belief is that the values given here should be correct.

[gordon77]

There was a code update a while ago that extended the maximum exposure time, so my belief is that the values given here should be correct.

Thanks

[eggplantt]

What sort of high FPS performance at what resolution will likely be possible with this chip, in comparison to previous camera modules?

e.g.
viewtopic.php?t=212518

I know it all 'depends' on what people attempt, but I am still curious if there's an idea of this chip's performance we have now that means something for slow-mo work.

[6by9]

There was a code update a while ago that extended the maximum exposure time, so my belief is that the values given here should be correct.

Not sure about V1 there.
The legacy stack had a second 5MP mode that messed with PLL values to extend the max frame and exposure time. I don't believe that has been replicated in the kernel drivers.
V2, V3, and HQ should all be correct - HBLANK can be set on all of them.

[jamesh]

What sort of high FPS performance at what resolution will likely be possible with this chip, in comparison to previous camera modules?

e.g.
viewtopic.php?t=212518

I know it all 'depends' on what people attempt, but I am still curious if there's an idea of this chip's performance we have now that means something for slow-mo work.

The limiting factor with high frame rates is not the sensor, it's the connection to the board, being only two lane CSI, combined with the maximum throughput of the ISP. With the right software and sensor setup, I guess we should expect similar results to the V2 camera.

[gordon77]

There was a code update a while ago that extended the maximum exposure time, so my belief is that the values given here should be correct.

Not sure about V1 there.
The legacy stack had a second 5MP mode that messed with PLL values to extend the max frame and exposure time. I don't believe that has been replicated in the kernel drivers.
V2, V3, and HQ should all be correct - HBLANK can be set on all of them.

agreed, v1 limits at 1 sec. Image below using 6 second exposure

[HermannSW]

What sort of high FPS performance at what resolution will likely be possible with this chip, in comparison to previous camera modules?

e.g.
viewtopic.php?t=212518

I know it all 'depends' on what people attempt, but I am still curious if there's an idea of this chip's performance we have now that means something for slow-mo work.

The limiting factor with high frame rates is not the sensor, it's the connection to the board, being only two lane CSI, combined with the maximum throughput of the ISP. With the right software and sensor setup, I guess we should expect similar results to the V2 camera.

The trick used in that thread to get 1007fps for v2 camera was reduced number of lines.
So capturing 640xH the H decided about the possible framerate (1007fps for H=75), see diagram at bottom.
This was all based on using 6by9's raspiraw AND capturing into RAM (/dev/shm).

In another posting 6by9 stated that v3 camera imx708 sensor is not planned to be supported with raspiraw:
viewtopic.php?t=345332#p2069198

To my knowledge all libcamera APIs only allow to capture from a small fixed set of resolutions, is that correct?
Or is it possible to capture say 640x240 with double the framerate as 640x480 with libcamera API, and 640x120 with 4× the framerate?


Capturing with v3 camera with 1000fps or even more would be super cool given that v3 camera is good at low light connditions ...
viewtopic.php?f=43&t=212518&p=1310445#p1310445
(classical mouse trap closes in 0.01s, which gives 10 frames of closing phase @1007fps)

[schoolpost]

Is there any more information specifically related to sensor modes? raw image dimensions and max sensor frame rate for each mode?

What is frame size for the HDR mode and what is the max frame rate that can be achieved in this mode? How does this mode work under the hood? ( Is the IMX708 Quad bayer? )

As always, I'm primarily interested in this for video application.

[jamesh]

Is there any more information specifically related to sensor modes? raw image dimensions and max sensor frame rate for each mode?

What is frame size for the HDR mode and what is the max frame rate that can be achieved in this mode? How does this mode work under the hood? ( Is the IMX708 Quad bayer? )

As always, I'm primarily interested in this for video application.

HDR halves vertical and horizontal resolution, so you end up with a 3MP sensor. But that is easily good enough for 1080p. It's a quad Bayer sensor, and individual pixels in each quad get different exposures which are then merged together using some clever maths. All done on sensor,.

https://www.sony-semicon.com/en/technol ... aked%20eye.