CameraBin start-capture triggers auto-focus, making captured image blurry

[Robert Hailey]

Greetings.

I'm trying to understand what is causing an auto-focus event in
response to the CameraBin receiving a 'start-capture' (or
'capture-start') signal.

Fedora 22
gstreamer1-1.4.5-1.fc22.x86_64
Ziggi HD Plus Document Camera
kernel-4.3.6-201.fc22.x86_64

Does anyone know off-hand:

* if-or-where there is an intentional focus being done in gstreamer,

* if-or-where there is any re-initialization needed during still image
  capture (e.g. when handling different view-finder & capture output
  pixel sizes), or

* if this (or a similar) issue has been addressed between 1.4.x and
  1.6.x ?

Thanks in advance!

-- 
Robert Hailey


More details/narrative from cheese-list:
https://mail.gnome.org/archives/cheese-list/2016-March/msg00000.html