PTZ focus preset

billmeek · Nov 12, 2018

Do all of the Dahua PTZ cameras use the focus adjustment manually configured in the presets? Or does the autofocus set the focus when you move between presets?

looney2ns · Nov 12, 2018

billmeek said:
Do all of the Dahua PTZ cameras use the focus adjustment manually configured in the presets? Or does the autofocus set the focus when you move between presets?

Auto focus only as far as I've seen.

billmeek · Nov 12, 2018

Thanks looney2ns! I was afraid that would be the answer.

billmeek · Nov 12, 2018

I was just looking through the SD49225T-HN User Manual (downloaded from https://www.dahuasecurity.com/asset/upload/product/20180523/Dahua-Network-Speed-Dome-Web3_0-Operation-Manual-V1_0_0-201805226.pdf) and it appears that you can set the focus when creating a preset. But unless you change the 'Mode' to "Manual" under 'Focus and Zoom', I suspect that it won't have any effect.

Would anyone owning a SD49225T-HN be willing to test and verify that a stored manual focus with presets work?

xdq · Nov 13, 2018

Give this a try

Code:

http://<ip_address>/cgi-bin/devVideoInput.cgi?action=getFocusStatus

It should ask for a username and password before giving you something like this:

Code:

status.Focus=0.918015
status.FocusMotorSteps=2720
status.LenAdjustStatus=0
status.Status=Normal
status.Zoom=0.721933
status.ZoomMotorSteps=1345

So you should now be able to use

Code:

http://<user:pass@ip_address>/cgi-bin/devVideoInput.cgi?action=adjustFocus&focus=0.665636&zoom=0.315000

or if you prefer curl

Code:

curl --digest -u <user>:<password> -X GET http://<ip_address>/cgi-bin/devVideoInput.cgi?action=getFocusStatus

Edit:
If you're using BlueIris or similar you might be able to set it to run an external script after moving to a preset. I have a similar setup to change my cameras between day/night mode as necessary.

billmeek · Nov 13, 2018

Thank you for the code xdq. I haven't purchased the PTZ camera yet. I was investigating buying the SD49225T-HN for my NRL22 rifle club to use as a spotter scope. Using the camera and a laptop with an external monitor (HDMI TV), would allow everyone to clearly see hits on the small targets (little as 1/4th inch) at range. My concern is the focus time as switching between distances can be moderately quick on a timed course.

BillG · Nov 13, 2018

billmeek said:
I was just looking through the SD49225T-HN User Manual (downloaded from https://www.dahuasecurity.com/asset/upload/product/20180523/Dahua-Network-Speed-Dome-Web3_0-Operation-Manual-V1_0_0-201805226.pdf) and it appears that you can set the focus when creating a preset. But unless you change the 'Mode' to "Manual" under 'Focus and Zoom', I suspect that it won't have any effect.

Would anyone owning a SD49225T-HN be willing to test and verify that a stored manual focus with presets work?

Just tried it on mine and it does keep the the right focus on presets when set to manual.

billmeek · Nov 13, 2018

Thank you very much for testing it for me BillG!

Search

PTZ focus preset

billmeek

n3wb

looney2ns

billmeek

n3wb

billmeek

n3wb

xdq

Young grasshopper

billmeek

n3wb

BillG

Getting the hang of it

billmeek

n3wb